Jumat, 31 Agustus 2018

Temperature Rise Threshold Target


The Paris Agreement in 2015 calls for concerted action to hold the increase in global average temperature to less than 2 degrees Celcius (C), and the more ambitious target, to 1.5 degrees C—above the pre-industrial levels[1]—and net-zero greenhouse gas (GHG) emissions by 2050. The temperature-limit  threshold refers to the Assessment Report 5 (AR 5) of the Intergovernmental Panel on Climate Change (IPCC) which stated with medium confidence that precise levels which can trigger a tipping point— dramatic, irreversible changes of the Earths’ climate. While the option of the more ambitious temperature limiting target has been advocated by climatologists, and also by Frank Bainimaram, the Prime Minister of Fiji, who stated that scientific research is revealing climate that is changing at a faster rate than was believed in the Paris Agreement. The temperature threshold target issue has further been complicated by assessments made on its feasibility[2]. While temperature threshold target has become a contentious issue, pledges and efforts thus far are still on the trajectory of putting the Earth’s temperature rise of 3C degree or more, thus the urgency of immediate action (United Nations Framework Convention on Climate Change).



[1] Carbonbrief has provided an overview on the difference of 1.5 versus 2 degrees rise in the average global temperature which compares the differences in heatwave duration, freshwater availability , increases in rainfall  intensities, crop yield increases and decreases, sea level rises, and coral bleaching.
[2] A draft "special report" by the UN climate science panel to be unveiled in October, obtained by AFP, concludes that "holding warming at 1.5C by the end of the 21st century (is) extremely unlikely" (phys.org). However, "We can still keep temperatures well below 2 degrees," said Myles Allen, a professor of geosystem science at the University of Oxford a co-author on several of the studies. But doing so requires that "we start now and reduce emissions steadily to zero in the second half of the century," (phys.org). Nevertheless a study in Nature Geoscience finds that holding the rise of global temperature to 1.5 degree Celcius is possible although very challenging (Millar et al., 2017).  

Senin, 13 Agustus 2018

Kinetic of decomposition of composting in household organic management system


Kinetic of decomposition of composting in household organic management system 
Composting of organic wastes has several benefits for the environment which includes:
·       Less than half greenhouse gases (carbon dioxide equivalent –CO2-equiv) released compared to landfiling—415 kg of CO2-equiv per ton waste in composting kg versus 927 kg in landfilling. The figures for comparison has been taken to account for short term decomposition, processing emissions and long term decomposition (up to 100 years); the processing emissions are assumed for centralized composting system and are strongly suggested to be much lower if composting is conducted at the household level. Figures are cited based on data from: see footnote [1].
·       Organic wastes in landfill are the main cause of acidic leachate which aggressively dissolve many compounds resulted in highly toxic leachate which contaminates groundwater. Diverting organic wastes from landfill reduces leachate toxicity. Modeling study has shown reduced toxicity of leachate with the reduction of organic wastes loads in landfill[2].
·       Better handling characteristics in waste management, i.e. reduced volume and weight, and becomes a stable material. Reduced volume and weight is caused mainly by[3]
o   loss of carbon (mainly carbon dioxide and very small amount of methane)—lost of carbon is estimated to be 63-077%
o   Loss of nitrogen (N) during composting was 51-68% and the nitrous oxide (N(2)O) made up 2.8-6.3% of this loss. The NH(3) losses were very uncertain but small.
o   Loss of water in the form of leachate.
The study is part of setting up a household organic waste management system to avoid its landfilling. The system aims to be efficient and low maintenance in managing waste. To realize the aims, a system with components of bokashi fermentation and passive aerobic composting was chosen. In order to stabilize the wastes, fermented wastes from the kitchen is loaded into the aerobic composting facility after adequate fermentation has been reached—a stage which maybe termed pre-composting. The aerobic composting facility is assisted by effective microorganisms inoculation.

Kinetic in household composting
The household organic waste management system is a combination of bokashi fermentation and aerobic in-vessel composting with effective microorganism innoculation.
Decomposition of organic wastes in composting is typically described as a first order reaction. A study (see reference)[4] had found that passive aeration and turning of organic wastes composted (compared to decomposition without aeration and turning) can increase the rate of decomposition by a factor of 1.8 to 2.8 at different parts of the compost bins. Addition of innoculum effective microorganism (EM1) further increases the kinetic by 28% to 40%[5].   
The casual investigation studies the kinetic of household composting and data are fitted to the following pseudo first-order kinetic model equation:
 
where C is the mass of wastes, k is the degradation rate constant (day-1) and t is the time (days).
Integrating the above equation and letting C = C0 initially when t = 0, it gives
The reaction rate constant (k) was obtained by plotting ln (C/C0) versus time.

Materials & Methods
Composting wastes: Garden wastes mostly leaves shed by trees, kitchen wastes.
Kitchen wastes were treated with bokashi fermentation using effective microorganism (EM4) and rice bran and which had been fermented for 5-7 days. The effective microorganisms are activated with sugar in the mixture of 20 ml of EM4, 15 grams of water and 1.5 liter of water. 1.5 liter + 20 ml of EM4 mixture treat about 40 – 50 liter of kitchen wastes produced over about one week. EM4 mixture dosage applied is 17 milliliter per 1 liter of kitchen wastes. Rice bran dosage applied is 4 grams per liter of kitchen wastes. Thus with assumed daily kitchen waste generation of 7 liter, daily applications are:
·       EM4 mixture applied is 119 ~ 120 milliliter and
·       rice bran applied is 28 ~ 30 grams.
The ratio of the wastes garden to kitchen is 10 : 1 by volume. Garden wastes and kitchen wastes are relatively homogenously mixed with the aid of a compost turner. The wastes are sprayed with effective microorganism (EM4) activated with sugar in the volumetric ratio of water and EM4 20 : 1, and 15 grams of sugar for every 20 ml of EM4. The application rate is suggested at 3 liter EM-water mixture per 1 m3 of waste to be composted (https://www.emnz.com/industries/horticulture/composting-with-em), which is 3 milliliter per 1 liter of waste to be composted.
The daily generation of wastes are: 1) kitchen waste = 7 liter, 2) garden waste = 3 liter, 3) once every week the garden is cleaned more thoroughly thus generating waste = 10 liter. Therefore daily application of EM4 mixture except for a day of larger waste generation is,
              3 (ml EM4 mixture/ liter waste ) X    (7+3) (liter waste) = 30 ml EM4 mixture
On the day of large waste generation, daily application of EM4 mixture is,
              3 (ml EM4 mixture/ liter waste ) X    [(7+10) (liter waste) = 51 ml EM4 mixture
Composting bin which was used was a 200 liter drum with passive aeration: pipes air intake numbering 64, on the side and bottom of drum, plastic grate, chimney in the center of the drum to create positive draft in the drum, and 2 T-pipes at the top of the drum to assist the creation of draft.
Nett weight of wastes and composted wastes were weighed on day 0 and weekly for 6 weeks.



[1] http://communitycompost.org/CCN_documents/GHG_compost.pdf
[3] https://www.researchgate.net/publication/51206438_Mass_balances_and_life_cycle_inventory_of_home_composting_of_organic_waste
[4] (PDF) Drum Composting of Food Waste: A Kinetic Study. Available from: https://www.researchgate.net/publication/305892566_Drum_Composting_of_Food_Waste_A_Kinetic_Study [accessed Jul 10 2018].

[5] Ibid. (Ref. 3)

Dryland Agriculture, Biochar and Climate Adaptation


I.     INTRODUCTION


Dryand agriculture in Indonesia is an important livelihood for a significant proportion of the population living in the tropical savanna climatic zone.  Most areas in Eastern Nusa Tenggara Province fall under the tropical savanna climatic zone with long dry season where 90% of the population rely on agriculture as their main livelihood.

The changing climate, abnormal changes in air temperature and rainfall, increases in frequency and intensity of drought and flood events have long-term implications for the viability of agricultural ecosystems (FAO, 2007). People living in marginal areas such as drylands face additional challenges with limited management options to reduce impacts (FAO, 2007) where climatic pressures on land have existed before the onset of climate change. Considerable resources  needed to increase agricultural ecosystem resilience are lacking in small scale farming households facing negative consequences of the changing climate.

The ENSO (El-Nino Southern Oscillation) is the main driver of inter annual climate variability in NTT. It has significant impact on seasonal rainfall as well as on the onset and the end of the rainy seasons (Fox 1995). Boer and Faqih’s (2013) analysis on temporal and average annual rainfall show greater deviations in the last few decades which are related to increases in the frequency of El Nino Southern Oscillation (ENSO) episodes. As a result, most areas in the eastern part of Indonesia will experience more climate extremes (Boer and Faqih, 2013). The Indian Ocean Dipole (IOD) and Madden-Julian Oscillation (MJO) also influence the increase in the episodes of extreme climates (e.g. the extraordinary drought in 1997/98 which occurred in conjunction with El Nino and IOD positive).

Studies have confirmed impacts of the changing climate: the unpredictability of planting seasons, decreased soil fertility (Sari et al., 2007), failed harvest, degradation of agricultural land resources, increased frequency, area, and intensities of drought, and increased intensities of pests (Las, et al., 2008), and decreased crop yields (Setiyanto and Irawan, 2013).

Droughts as often experienced during El-Nino periods, cause crop losses in lower hills and alluvial plains while rainstorms linked to typhoons lead to damage to corn and other crops in the highlands4. In the 2002/2003 El-Nino for example, the production loss in NTT due to drought was about 130 billion rupiahs (equivalent to 16 million US$). Losses varied between districts of the order of between 0.5 and 5.0 million US$ (NTT Provincial Agriculture Office, 2004). More recently, the El NiƱo in 2006/07, for example, caused low rainfall and prolonged crop failure on the northern coast of the province (Muslimatun and Fanggidae, 2009); while the latest 2015/2016 El Nino had also caused “Long” to “Extreme “ drought in most areas of eastern Indonesia, including Nusa Tenggara (Food Security Monitoring Bulletin, 2015). On the other hand, extreme wet season such as experienced during La Nina (Cold ENSO) cause extreme leaching of especially nitrogen, wind and water damage which mostly damage corn and sorghum while other crops also tend to experience micro-nutrient deficiencies.

There are strong indications that changes in rainfall patterns are already occurring: over the last decade, there has been a growing number of years with a ‘false’ start of the rainy season, floods and droughts both during dry and rainy season, and high winds. Historical data analysis indicates that extreme rainfall has increased during the last half of the 20th century when comparing 1901-1950 with 1951-2000. Climate change projections prepared up to 2050 for NTT province suggest a likely decrease in September-November rainfall by 2050, with greater decreases likely in the western parts of the Province. There is also a consistent indication that rainfall will increase during March-May, suggesting a shift of the rainy season (a later start and later end) (UNDP, 2011). Prediction on the delayed onset of rainy season in Indonesia’s southern islands (which include NTT) is also stated by the Netherland Commission for Environmental Assessment (2015).

Small scale farmers in the dry land are facing multiple inter-related challenges—affecting their well
beings and sustainabilities—which are compounded by the changing climate. Technical obstacles concern the accessibility of appropriate agricultural inputs and techniques; economic obstacles are related to inadequate capacity to mobilise adequate finances for appropriate agricultural inputs and unfavourable agricultural product value chain. Geography concerns with accessibility (thereof, the lack of). Environmental challenges are numerous—climatic, agricultural land degradation, and the decline in healthy biodiversity which support pollination and prevention of pests and diseases. Some farmers are more prone to one or more of the above challenges.  

Adaptation to climate change includes a set of actions to moderate harm or exploit beneficial opportunities in response to climate change (IPCC). Biochar based agriculture is one means to adapt to climate change challenges, through increasing  water retention/drainage capacity and fertility.  In agricultural cropping biochar provides resilience against both excess of water (due to high intensity rainfall), as well as lack of water (due to extended drought periods). Biochar also assists in exploiting beneficial opportunities of climate change which are, its ability to retain water gained from temporal excess (increased rainfall intensity). Application of biochar will also increase predictabilities of harvest, and extend the length of planting time (Scholz et al., 2014). Biochar application can also take the opportunity to increase arable land by the restoration of marginal land to increase crop production. The combination of increase in the areas of arable land and extension of planting time is in accordance to analysis of Irawan (2013) which states that efforts to overcome impacts of El Nino and La Nina should be focused in preventing the decrease of harvest area during the occurence of the former, and to increase harvest area during the latter.

Biochar benefit extend beyond the strengthening of resilience of agriculture in climate change adaptation. The application of biochar combines a number of important benefits: i) climate change mitigation: absorption of carbon dioxide (CO2) in photosynthesis and carbon sequestration through its stable carbon, and the reduction of other GHG emissions (mainly N2O), ii) pollutant immobilization, and iii) waste management. In contrast to other organic materials, most of the biochar matrix is probably stable for hundreds to thousands of years when mixed into soils, and thus represents carbon that is actively removed from the short-lived carbon cycle.

An alternative use of biochar is as a clean energy source. Household burning of traditional biomass is a major health risk factor in Indonesia (Zhang and Wu, 2012). Indoor combustion of solid fuels using traditional stoves releases a large amount of particulate matter (PM) and gaseous pollutants, causing serious health  consequences for exposed populations. IAP emission levels generated by
solid fuels are often 20–100 times those of clean fuels like liquefied petroleum gases, and often up to 20 times higher than the maximum  recommended levels suggested by the World Health Organization (WHO) guidelines and national standards (WHO/UNDP 2009).

Biochar briquettes as fuel in low emission cookstove has been proven to reduce smoke and harmful gas production from traditional biomass cooking. The use of biochar from agricultural wastes to substitute for firewood also contributes to the mitigation of greenhouse gases (GHG’s). Other benefits that may incur with the substitution of firewood with biochar for cooking are, time freed from firewood collection and increased security on cooking fuel availabilities in cases where wood for cooking fuel are scarce.

Decentralised biomass gasification electricity generation is also important in overcoming the lack of economy of scale in extending electricity grid to remote and sparsely populated areas. Likewise, biochar based clean cooking energy may overcome the lack of economy of scale in expanding the distribution network of clean cooking fuel such as liquified petroleum gas (LPG).

I.1.  Dryland Agriculture



Areas in Indonesia eastern provinces are generally less developed and in several regions, have been facing chronic poverty issue for decades such as Eastern Nusa Tenggara (ENT). The main livelihood of most villages (> 90%) in NTT is agriculture (BPS NTT, 2014). Agriculture mainly takes place in the form of subsistence rain fed based agriculture.

Dryland agriculture in the east of Indonesia, is especially vulnerable to climatic stress and land degradation due to drought and erosion vulnerabilities. Areas which are dominated by tropical savanna climate, have a longer dry season than most parts of Indonesia which are mainly in the tropical wet climate.

In Indonesia, dry agricultural land, is defined as land that receive precipitation of less than 750 mm/year. Agricultural land in those areas also receive short period rainy season and have less than 179 planting days. In terms of agricultural land resources, almost 50% agricultural land in Indonesia is dryland potential to contribute to national food crop production.

Most of agricultural land in NTT falls into the categories of dry agricultural land (237,800 ha) and dry agricultural land and bush (601,600 ha) out of 1,177,115 ha total agricultural land.

According to the Agency for Agricultural Research and Development, the production of food crops in dryland needs to be increased so that it can contribute to the national food security (Balitbangtan, 2013). The harvested land area of dryland crops has increased annualy by 0.34%, which is an insignificant—compared to those of non dryland harvest area with increase rate of 1.22% (Balitbangtan, 2013). Furthermore, area planted with agricultural commodities dominant in the dryland (cassava, dryland rice, and peanut) tend to decrease or remain stagnant (Balitbangtan, 2013). While there have been investments made in dryland agriculture, overall investments are much greater in wetland rice and plantation. Regions with dominant drylands (Sulawesi and Nusa Tenggara) experience slower or even contraction in the development of agricultural commodities than regions dominated by wetland rice or plantations (Balitbangtan, 2013). Generally, investments for dryland agriculture development is slower than for the wetland. This is reflected by the slow accumulation of agricultural capital and slow productivity increase  in the dryland (Balitbangtan,2013).

I.2.  Land Degradation in the Dryland


Land degradation is a reduction in the physical, chemical or biological status of land, which may also restrict the land's productive  capacity  (Chartres, 1987). degraded land in Indonesia can be defined as “critical land” based on standard as described in the Regulation of Dirjen 4/V-SET/2013 about Technical Guidance of Conducting Spatial Data of Critical Land byThe Ministry of
Forestry  (The Ministry of Environment and Forestry since 2014). Based on the regulation, critical land is the land which has been damaged, hence losing or reducing the function up to the defined or intended level. Therefore, the assessment of critical land in an area is adjusted with
the area function. The value of critical level of land is acquired from multiplication of weights and scores value[1] (Prasetyo et al, 2013).

The area of the degraded land (lahan kritis)  in Indonesia  was 24.3 million  hectare (ha) in  2013 (MoF). Most of the degraded land are in the forest and non-forest lands, have become weed infested land, open space, grassland, and dry agricultural  land.

The extent of degraded land in Indonesia is increasing rapidly especially in the dry areas, in the eastern and central parts (Anwar, 2009), caused  mainly by  inappropriate land  use and the lack of soil  and  water  conservation techniques.

Revitalisation of degraded land is a strategy outlined in the Indonesia Climate Change Sectoral (Agriculture) Roadmap which serves the need and demand for development in increasing agricultural areas that can prevent deforestation and decrease degraded land (BAPPENAS, 2010).

In the eastern parts of Indonesia, which are considerably drier, climatic factors contribute to the
dryness and arid conditions in various parts of the islands. In East Nusa Tenggara (NTT) Province, degraded land has reached 1,356,757 ha, comprising 299,291 ha in forest land and 1 057 466 ha in non-forest land.

The biophysical conditions of NTT Province, which are closely related to land degradation problems, are characterized here under:
·       An island dominated by hilly topography, 26–46 percent slope, with young sedimentary rocks and volcanic parent materials and high erosion sensitivity;
·       Low vegetative cover, low infiltration rate, high runoff and risk of floods;
·       A dry season of nine months and a rainy season of three months with high erosivity via rainfall;
·       Land productivity is very low, thus requiring many inputs from farmers to maintain production;
·       High sediment load during floods; this has led to mangrove forest degradation, downstream pollutionand other negative environmental impacts.

I.3.  Biochar, Agro-Ecosystem Resilience and Climate Change Mitigation


Biochar, a heterogeneous substance rich in aromatic carbon and minerals, is produced by
pyrolysis of sustainably obtained biomass under controlled conditions.

Biochar contributes to the increase in soil water holding capacity as well as drainage in flood prone area, the neutralization of soil acidity and to a decrease in the solubility of phytotoxic metals such as aluminum in soils. In addition, biochar can bind and release nutrients (N, P, K, Ca) and could therefore reduce nutrient leaching to the subsoil in weathered, low-cation exchange capacity soils.

Biochar specific surfaces, being generally higher than sand and comparable to or higher than clay, will therefore cause a net increase in the total soil-specific surface when added as an amendment. The beneficial impact of biochar as soil ammendment tool is because of its cation exchange capacity (CEC; 40 to 80 meq/100 g, high surface area (51 to 900/m2.g), which leads to increased soil pH and water holding capacity, and affinity for micro- and macro-plant nutrients (Lehmann et al, 2006; Laird et al, 2009 and Lehmann, 2007).

Increased soil fertility has been reported in the use of biochar as soil ammendment (Norwegian Research Council, 2014). An increase of yield was obtained  in a field test in an oxisol soil in Sulawesi. A trial in a compact clay (vertisol) area in Oebola, West Timor (NTT Province) shows that biochar can help to drain compact clay soil during heavy rainfall in the monsoon season.

Biochar ability to ammed a degraded soil was also reported. In Ngatatoro, Sulawesi, biochar which was used to ammend a degraded oxisol soil with limited nutrient holding capacity (low cation exchange capacity) increased yield and the length of planting season enabling two planting seasons (Norwegian Research Council, 2014).

Biochar can also strengthen communitye’s resilience through increasing access to modern energy services which are, clean thermal energy for cooking and productive activities and electricity—which are often lacking in remote areas. Pyrolysis heat from the production of biochar can be recovered for the provision of low emission thermal energy. Biomass gasification to generate electricity produces biochar as the by-product. Biochar made into briquettes can be used as clean cooking fuel. Access to those energy forms improve living conditions. Electricity and significant heat energy can also be precursors for economically productive activities (e.g. food proccessing, agricultural product drying).

Biochar also combines a number of other important benefits such as: i) climate change mitigation: carbon sequestration and reduction of other GHG emissions (mainly N2O), ii) pollutant immobilization, and iii)  waste management.

Assessments of the realistic potential for biochar in carbon abatement have converged on a figure of about 1 Giga ton Carbon/yr (Lehmann, 2007) presenting a potential wedge for climate change mitigation (Nsambe, 2015).

Biochar sequester about 40% of biomass from agricultural wastes that are pyrolised. Biomass which is pyrolysed returns around half of the biomass carbon into the atmosphere as CO2. Around 40% of total biomass C is sequestered, i.e. locked up for long periods, as biochar (the remaining 10% is more labile and degraded). In contrast to other organic materials, most of the biochar matrix is probably stable for hundreds to thousands of years when mixed into soils, and thus represents carbon that is actively removed from the short-lived carbon cycle.

Biochar also inhibits the emission of the strong greenhouse gas nitrous oxide (N2O), where up to 90% (lab trials) and 70% (field trials) reductions in the release of the gas have been reported. The most probable mechanism to explain this is a combination of a “pH effect”(biochar having an alkalizing effect, see below) and an additional mechanism such as strong biochar sorption of nitrous oxide followed by reduction of N2O to N2 with biochar-sorbed organic molecules serving as electron donor.

Potentially, the energy generating component of a biochar system can displace carbon-positive fossil fuel energy and high emission traditional biomass combustion from cooking. The ability of biochar to maintain  soil fertility can potentially reduce emission from the conversion of forest to replace degraded agricultural land.

Contamination of soil with legacy pesticides such as DDT and persistent pollutants such as PAHs is still a significant problem (a billion-euro problem throughout the world). Such organic pollutants can be immobilized by strong binding to biochar added to the soil in small (1-5%) dosages. Studies indicate extremely strong sorption of hydrophobic organic compounds and pesticides to non-activated biochar (i.e., biochar that has not undergone a process with steam or chemical activation to increase pore volume) (Norwegian Research Council, 2014).

Biochar can be used as one solution to manage agricultural waste, as the are signficant quantities of wastes that are burnt and disposed indiscriminately, for example into water bodies. Biochar based system utilize the unmanaged agricultural wastes, converting the wastes into useful products which are soil ammendment and also a source of energy.

I.4.  Biochar Production Technologies


Rather than a single technology, biochar is a common thread running through various technological approaches, which can be varied to emphasize a particular outcome or opportunity (Lehmann, 2007).

Traditional biochar producing technologies emit greenhouse gases and particles and are therefore non-sustainable. There is a need to both introduce new environmentally friendly technologies making efficient use of pyrolysis gases and heat generated by pyrolysis.

Previous phase of the project have tested a number of technologies which are evaluated based on its social and economic compatibilities and environmental  performances.

Technologies that were evaluted previously are, the Adam Retort Kiln (ARK), Top lift updraft stoves (TLUD), and the Kon Tiki kiln (KTK).

The development of the Adam retort kiln and similar devices such as basic steel retort systems introduced the partial afterburning of pyrolysis gazes. In these retort systems the feedstock wood can be mixed with dry biowaste materials like prunings, rice husks or maize cobs but a lot of valuable start-up wood is still needed [Sparrevik et al., 2014; Adam 2009). Such medium-scale improved retort technologies, with the recirculation of pyrolytic gases produce around 75% lower deleterious gas emissions (mainly CO, CH4, aerosols) and higher yield than traditional systems.

Household-scale cooking stoves, so-called TLUDs (Top-Lit Up-Draft stoves) (Manoj et al, 2013) can generate biochar while using the energy produced for cooking. Advantages include that they burn cleanly avoiding negative health effects due to indoor air emissions (Smith and Mehta, 2003), can use various waste biomasses as feedstock and are fuel-efficient. Small-scale TLUDs may be applicable for horticulture or small kitchen gardens but they generate too little biochar (0.5–1 kg per run for household devices and up to 10 kg for the bigger community stoves) to supply enough biochar for farming or selling as charcoal. In addition, the stove needs to be actively quenched after each cycle, which is impractical in daily use (Corenelissen et al., 2016).

A recent development has been the introduction of the Kon-Tiki flame curtain kiln, designed in 2014 in Switzerland and rapidly spreading since by open source technology transfer to farmers in more than 50 countries (Schmidt and Taylor, 2014).

In contrast to medium-sized retort kilns, no startup wood is needed for flame curtain kilns. The cost per kiln varies with design, construction material and country but is within a range of €30 (soil pit shield) to €5000. The cheapest way is a mere conically shaped soil pit which would essentially be for free (Corenelissen et al., 2016).

The Kon Tiki kiln offers multiple advantages (Corenelissen et al., 2016):
1. gas and aerosol emissions are relatively low (for CO even lower than those of retort kilns)
compared to other small scale biochar and charcoal production technologies but not to
large-scale processes;
2. no wood is required for startup;
3. construction and operation is much easier and more economic compared to retort kilns;
4. pyrolysis is much faster (hours) than in most traditional and retort kilns (days).

Advantages and disadvantages of various medium-size kiln types (Cornelissen et al., 2016)
Biochar produciton technology
Application
Main advantages
Main disadvantages
Biochar-generating TLUD cookstove
Kitchen gardens, cooking purposes
Energy for cooking, Saving firewood, Low gas emission factors
Too small to generate larger amounts of biochar
Traditional kilns
Agriculture, charcoal making
Familiarity, Low investment cost, Complete pyrolysis of thicker logs
High gas emission factors, Slow (4 days)
Retort kilns
Agriculture (possibly+ energy), charcoal/ briquette making
Lower emissions than traditional kilns, High biochar yield, Energy generation possible with pyrolysis heat, Complete pyrolysis of thicker logs
High investment cost, Startup wood required. Complicated construction and operation, Slow (2 days)
Kon Tiki Kiln
Agriculture + heat, charcoal making (small logs)
Relatively low emissions esp. of CO, No startup wood required, Easy to construct and operate, Fast (3 hours for 1 m3 biochar), Low to zero investment cost, Heat recovery
Relatively low biochar yield (charcoal making), Incomplete pyrolysis of thick logs
Power-generating systems
Energy + agriculture, briquette making
Power generation, Negligible emissions
Relatively high investment cost, Low caloric
content of briquettes



[1] There are several parameters used to determine “critical land” level based on the regulation No. P.32 / Menhut-II / 2009, including: land cover, soil slope, soil erosion hazard level, land productivity, and land management. Bulk density, soil permeability, soil texture, soil structure, and soil organic carbon are some soil parameters needed in determining soil erosion hazard using USLE (Universal Soil Loss Equation) method.


AN OVERVIEW OF LAND AND FOREST GOVERNANCE IN INDONESIA


Deforestation and forests and peatlands degradation has occured largely as a result of logging and land clearing for palm oil and wood fibre plantations mainly in Kalimantan and Sumatera islands and Islands of Riau. In a study by Asia Foundation, analyses of experts’ opinions identified drivers of degradation in descending order: palm oil, industrial timber plantations, coal mining, and actors who benefit financially from forest exploitation. The provinces of Papua and West Papua are now becoming the focal point for the Indonesia's government palm oil development.  The Merauke region of Papua is now dominated by concessions, where land use dynamics are driven by the government's Merauke Integrated Food and Energy Estate (MIFEE), while Sorong and Manokwari regencies in West Papua province have become the palm oil hotspots (Mongabay). Although the situation may be hard to definitively gauge given spotty information, deforestation in Indonesian New Guinea may be more widespread than any published data purport (Mongabay).

Presentely land and forest governance in Indonesia is a very challenging field with main issues on the improvement of transparency in decision making and increased communities' participation--in order to make the government more accountable to the needs and interests of forest dependent communities. The strengthening of the national and local land and forest governance is required in addressing deforestation and degradation and destruction of forests and peatlands in the Country.

In the context of forest dependent communities, gaps identified in an Asia Foundation study were, unclear land tenure and uncertain land classifications, the influence of business and political interests in policy and regulation, and ineffective land use planning. Key strategies in inclusive sustainable forest management that were identified were securing community land tenure and its integration into spatial planning. To improve land and forest governance, the study recommends governmental, researchers, donors and civil society to avail supports to communities to, accelerate land classifications/tenure, integrate participatory maps into spatial plans, monitor forests, conduct action research of land/forest stakeholders, address financing, engage political economy analysis.

There were generally a nexus of causes and effects of poor land and forest governance in Indonesia. Decentralised governance since 2001 has caused local governments to be unprepared in terms of technical and financial resources to implement effective governance.  Those are further combined with unclear and overlapping regulations, culminates in consequence—low level of enforcement, and subsequently low level of compliance/illegal activities—at times, occurred as results of collusions of extraction enterprises and officials. Consequently there have been great losses downstream, of/in income, employment opportunities, government revenue, such as royalties and taxes, and local as well as global environmental services. Illegal forest activities also undermine legitimate forest enterprises by subjecting them to unfair competition from under-priced products and by discouraging socially and environmentally responsible long-term investments.   

Poorly Excecuted Spatial Planning

Present poorly executed spatial plans in the country is notably due to absence of a single map as a reference to be used across different ministries and agencies in implementing geospatial thematic works. There are on-going efforts to compile and synchronise data which will be the basis for developing a single map for development in the country.

Greenpeace's interactive maps have highlighted the vast scale of overlap of forest concessions--licences for the same concessions in areas of 7 million hectares have been allocated to four different companies. The Agency for Geospatial Information has also identified a great number of overlaps of land uses and classifications, among forest zones, mining concessions, transmigration area, borders, use permit, and others. This overlap predominately  occurs when  different  agencies  issue  licenses  for the  same  area  but  in  separate jurisdictions, for instance  protected areas,  customary land, and  resource extraction  concessions. (Shahab, 2016; Forest Watch Indonesia, 2017, In: Indonesia's One Map Policy: A Critical Look at the Social Implications of a 'Mess' (PDF Download Available). Available from: https://www.researchgate.net/publication/319501418_Indonesia%27s_One_Map_Policy_A_Critical_Look_at_the_Social_Implications_of_a_%27Mess%27 [accessed Jan 15 2018].

Existing land and forest maps have been widely known to cause disputes due to the overlap of land uses  issue. According to data collected by KPA (Agrarian Renewal Commission), a number of trends regarding land use conflicts have risen since 2004. Over the past eleven years, the number of land-use conflicts has increased 1,300% (Figure 2), the area of disputed land grew exponentially (Figure 3), and the number of
injuries and arrests increased 3,975% and 3,871%, respectively (Figure 4). When you classify land
use conflicts (2004 through 2016) by industrial sector, plantation and infrastructure cause the most
conflicts (43% and 31% respectively), followed by forestry (7.3%) and mining (6.2%) (Figure 5).
For context, Indonesia’s national elections occurred in 2004, 2009, and 2014. There have been
recent spikes in reported conflicts with a drop between 2014 and 2015; however, conflicts quickly
rose back to 2014-levels in 2016 (Indonesia's One Map Policy: A Critical Look at the Social Implications of a 'Mess' (PDF Download Available). Available from: https://www.researchgate.net/publication/319501418_Indonesia%27s_One_Map_Policy_A_Critical_Look_at_the_Social_Implications_of_a_%27Mess%27 [accessed Jan 15 2018].

The report issued by the Consortium for Agrarian Reform demonstrates that in 2013 alone there were 369 agrarian conflicts involving lands with an area reaching around 1.28m ha. Divided into sectors these conflicts comprised:
• Plantation sector, 180 conflicts (48.78%);
• Infrastructure sector, 105 conflicts (28.46%);
• Mining sector, 38 conflicts (10.3%);
• Forestry sector, 31 conflicts (8.4%);
• Coastal sector/marine, nine conflicts (2.44%); and
• Other sectors, six conflicts (1.63%). On average, almost every day there is more than one agrarian conflict occurring in the country. And if we take a closer look at the data, most of the conflicts happened due to problems with land overlapping. (https://oxfordbusinessgroup.com/overview/indonesia-introduces-one-map-policy-solution-overlapping-land-claims)

The government has endeavored to accelerate efforts to correct the map through the One Map Policy (OMP), with the main reference on basic geospatial map which is then synchronised thematically with relevant ministries/agencies to produce a single national geospatial reference. OMP is also a move to make drawing  boundaries  a  more  democratic  process  by  including  local  input  and community  land claims. The map development has been scheduled for completion by 2019.   

In the course of the map development, government agencies have slowly withdrawn their promise of community participation/transparency in order to speed up the process of collecting data. As of late 2016, most involved government agencies have submitted their existing thematic maps and BIG is in the process of verifying the data and integrating it into their base geospatial information map, published in 20144 (Jong, 2016). (Indonesia's One Map Policy: A Critical Look at the Social Implications of a 'Mess' (PDF Download Available). Available from: https://www.researchgate.net/publication/319501418_Indonesia%27s_One_Map_Policy_A_Critical_Look_at_the_Social_Implications_of_a_%27Mess%27 [accessed Jan 15 2018].

WRI has close ties with the national government and has worked with ministry officials
for some time. Their current director was even the leader of UKP4 when the OMP was first
proposed. The maps produced by WRI in partner with local communities are strong candidates for
incorporation into the OMP.

Indonesia's One Map Policy: A Critical Look at the Social Implications of a 'Mess' (PDF Download Available). Available from: https://www.researchgate.net/publication/319501418_Indonesia%27s_One_Map_Policy_A_Critical_Look_at_the_Social_Implications_of_a_%27Mess%27 [accessed Jan 15 2018].

Other than the technical aspect issue of existing map, there have been cases of the lack of political will to adhere to spatial plans.  For example, SEKALA, a geospatial consulting company which worked with the community, published a report in 2008 that stated “[in Bali], government officials do not adhere to spatial plans and issue land to villa developments when it has been categorized for conservation or watershed management” (SEKALA, Nordic Consulting Group & Papuan Civil Society Strengthening Foundation, 2008). (Indonesia's One Map Policy: A Critical Look at the Social Implications of a 'Mess' (PDF Download Available). Available from: https://www.researchgate.net/publication/319501418_Indonesia%27s_One_Map_Policy_A_Critical_Look_at_the_Social_Implications_of_a_%27Mess%27 [accessed Jan 15 2018].

Lack Of Transparency On Key Processes

The lack of political will to adhere to spatial plan which have been consulted to community stakeholders is an example of the lack of transparency in geospatial related activities. Political will for spatial planning can be insecure, especially concerning economic development and foreign investment. This issue could provide incentive for officials implementing the OMP to work directly with the Corruption Eradication Commission to  maintain  the  integrity  of  spatial  data  while  also identifying corruption from local governments.

The Indonesian government acknowledges the lack of transparency linked to corruption, such as corrupt individuals selling concession concession licenses, use-rights, and resources that otherwise may have not been available (i.e. been claimed by a different stakeholder). KPK is actively involved in the issue of land disputes in Indonesia and is currently entered into a ‘Joint Agreement’ with agencies (including the Ministry of Forestry and Environment and the Ministry of Agriculture) that promotes the collaboration between these various agencies when granting land claims and land ownership (Astuti, personal communication, 22 Feb 2017).

Organizations with dominant information and the authority to draw boundaries for
land use policies and business concessions are the actors benefiting the most from mapping’s
inconsistencies. By using the broad array of overlapping policies to their advantage, policy makers
and businessmen can claim resources and access-rights to land without worrying about any
meaningful opposition from local communities. (Indonesia's One Map Policy: A Critical Look at the Social Implications of a 'Mess' (PDF Download Available). Available from: https://www.researchgate.net/publication/319501418_Indonesia%27s_One_Map_Policy_A_Critical_Look_at_the_Social_Implications_of_a_%27Mess%27 [accessed Jan 15 2018].



Failure to Comply With Land And Forest Laws And Regulations

ON one hand, the big corporations have paved the way to more sustainable practices, e.g. the zero deforestation policy, on the other is the “opaque” firms that continue to work in ecologically sensitive areas. The failure of the Indonesian government to reciprocate progressive reforms within palm oil industry is allowing other smaller, more opaque firms to step in and start working in ecologically sensitive areas that many larger firms avoid. While GAR’s failings undoubtedly represent a step backwards, it is arguably the actions of the sections of the industry not subject to the same reputational pressure that now pose the gravest threat to Indonesia’s forests.

Several such companies were featured in the report Permitting Crime, released by the Environmental Investigation Agency in December 2014. This documents how these opaque companies continued to illegally destroy large swaths of biodiverse, carbon-rich forests against the wishes of local communities. The evidence indicates there are more than enough of these companies to undermine the impact of the zero-deforestation commitments. (https://www.theguardian.com/sustainable-business/2015/jun/11/palm-oil-industry-indonesia-corruption-communities-forests)

Collusion Between Local Officials And Business Interests

The statement that actors who benefit financially play a role in causing deforestation and
peatlands degradation, received 35% agreement. Literature on forest governance suggests that
vested interests affect forest and land governance in a number of ways, such as by profiting
from the expansion of oil palm and industrial plantations for pulp and paper (Hunt 2010) (quoted from Asia Foundation’s Study)

Poor governance contribute significantly to occurrence of official and business interests collusions. Presently, land use and classification attributes in maps and land use regulations are significantly desynchronized —due to lack of coordination of different regulating and sector entities at national, provincial and district levels. Thematic maps are also often developed without availabilities of relevant biophysical attributes of the areas. Such inconsistencies provide opportunities for making “flexible discretions and interpretations” especially the administration of use permits.

Poor governance processes were identified to result in different licenses being
allocated for the same land area. This occurs when one or more local and central authorities
issue licenses for an area of land that conflicts or overlaps with an existing land title. There
are a number of reasons for this. Decentralisation devolved authority to local governments to
issue land use regulations. Local regulations are not however always aligned with national
regulations. Another complication is that different land use types can have different, and often
conflicting, regulations and license obligations. Inaccurate or conflicting maps is another
causal factor. Land use planning processes rely on complete and accurate maps to provide
information about actual forest conditions, including forest cover, land type and tenure
boundaries. Yet a lack of coordination across horizontal and vertical levels of government,
unclear forest and land allocations (KPK 2010), and a lack of clarity around land tenure
including for recognizing adat tenure (McCarthy 2009) is resulting in inaccurate maps. The
implications of overlapping licenses for land activities are, in some regions, resulting in more than the total area of land being allocated for industry activities, leaving no land for
community use.

Lack Of Community Consultation And Participation

In an interview at SEKALA
headquarters, Pak Ketut mentioned that several local NGOs and communities have mapped areas
and presented their data to the government, only to be rejected (sometimes multiple times)
(personal communication, 29 Nov 2016).

Indonesia's One Map Policy: A Critical Look at the Social Implications of a 'Mess' (PDF Download Available). Available from: https://www.researchgate.net/publication/319501418_Indonesia%27s_One_Map_Policy_A_Critical_Look_at_the_Social_Implications_of_a_%27Mess%27 [accessed Jan 15 2018].

The Roundtable on Sustainable Palm Oil (RSPO) has also found that Golden Agri-Resources (GAR), the biggest palm oil producer in Indonesia, has failed to respect the free, prior and informed consent of indigenous communities.

Issues on One Map Policy

On the other hand, by making spatial data legible to everyone in Indonesia – including
individual citizens – mapping could be efficient and effective at the grassroots level. As long as
the data itself is correct, the spatial organization of an area can be used to defend land claims. A
population with access to official spatial data can more easily defend their land, as long as their
previous claims were recognized. Within this authority however, lies another level of political
power. Communities are often spoken of as distinct, unified entities when in reality they are
anything but. Conflict within and between communities is quite common and whoever represents
these communities has the most power when it comes to making claims to certain lands. Those
with more information, influence, and a higher political position within the community are more
likely to have their voices heard than other members of the community. This puts certain people
at a distinct disadvantage.
In their respective interviews, Dr. Astuti and Dr. Kurniawan have argued that the
government will be the one to benefit the most from the OMP. Dr. Astuti went so far as to say that
the government “will have a very powerful surveillance mechanism to govern not only the private
sector, but also the indigenous communities…and citizens of Indonesia” and that the “One Map
Policy, in a way...can be good in terms of providing clarification for all the questions, but it also
provides a very powerful weapon for the government” (Astuti, personal communication, 22 Feb
2017). The reason that the government will claim more power from the OMP is because
communities are not able to use spatial data as is: the “communities require support and resources
from the NGOs and the NGOs have limited capacity because they rely on donor support” (Astuti,
personal communication, 22 Feb 2017). Dr. Kurniawan further states that the OMP “is intended to 35
strengthen the national government’s power in order to control for land use development”
(Kurniawan, personal communication, 7 Feb 2017).
Dr. Astuti and Dr. Kurniawan are likely correct in their assertions and the Indonesian
government will, in the end, benefit the most from the OMP when it is implemented. Dr. Astuti
brings up a good point when she mentions that communities rely entirely on NGOs in order to
process spatial data. Funding sources for NGOs are low and the more communities that want to
use the data provided by the OMP, the more pressure will be placed on these NGOs.

Indonesia's One Map Policy: A Critical Look at the Social Implications of a 'Mess' (PDF Download Available). Available from: https://www.researchgate.net/publication/319501418_Indonesia%27s_One_Map_Policy_A_Critical_Look_at_the_Social_Implications_of_a_%27Mess%27 [accessed Jan 15 2018].

Indonesia's One Map Policy: A Critical Look at the Social Implications of a 'Mess' (PDF Download Available). Available from: https://www.researchgate.net/publication/319501418_Indonesia%27s_One_Map_Policy_A_Critical_Look_at_the_Social_Implications_of_a_%27Mess%27 [accessed Jan 15 2018].

Land Tenure Security and Improved Land Classification

In the study which analysed exoperts’ opinions on drivers of deforestation and forest degradation, Asia Foundation found that tenure security and sustainable management approach are interrelated—as unsecure property rights and land tenure results in a lack of regulation and subjects forest to predatory use.
‘When local communities perceive they will lose access to local resources… traditional land use controls
are often ignored, and smallholders’ clearing and land grabbing often exacerbates the
corporate and government ones.’

Conversely, when property rights are secure, local communities or other stakeholders are
more likely to manage forests sustainably (Agrawal & Ostrom 2001; Contreras-Hermosilla &
Fay 2005). Providing forest communities with secure forest tenure therefore becomes a
necessary condition for enhancing their participation in forest protection (Safitri 2010).
Consequently, an intervention identified to respond to this issue was the revision of land
tenure laws and property rights to integrate adat (customary) and local community forest and
land management systems in Indonesian law (Quoted from: Asia Foundation’s study).

Another issue is with regards to desynchronized land use/land classification maps among government agencies, various levels of government jurisdictions and ministries. Interventions to respond to these issues include creating transparency in the allocation of land and forest use permits by making land permit data publicly available (47%).
Transparency in the issuing of permits will ensure that information on permits for logging,
mining, palm oil expansion and other forest uses is publicly available, reducing instances of
overlapping permits.