CARBON DIOXIDE STORAGE AND SEQUESTRATION POTENTIALS OF CITY PARKS IN BANDUNG CITY

CARBON DIOXIDE STORAGE AND SEQUESTRATION POTENTIALS OF CITY PARKS IN BANDUNG CITY

Barti Setiani Muntalif¹ and Erwan Kow²

Faculty of Civil and Environmental Engineering, Institut Teknologi Bandung,

Jl. Ganesha 10 Bandung 40132

E-mail: ¹bartisetiani@yahoo.com; ²erwankow@gmail.com

Abstract: Increased concentrations of greenhouse gases (GHG’s) are linked with the increased risk of global climate change. Urban trees can reduce atmospheric carbon dioxide (CO₂), the main anthropogenic GHG. Urban forest is a widely known carbon reservoir. Woody vegetation, trees and shrubs, sequester CO₂ through photosynthesis and store excess carbon as biomass. Park is the second largest component of urban forest in Bandung City, and is targetted to be the largest  in 2030 .The potentials of carbon storage and sequestration in city parks in Bandung have not been measured prior to this research. The research found the average density of CO₂ storage (DCS) of City Park is, 4.51 (95% CI, -1.98, +2.56)  ton CO₂ per 100 square meter (tonC.100m^-2) with total CO₂ storage (CS) for parks in Bandung at, 39,278 (-17,244, +22,259) tonC. The average density of CO₂ sequestration rate (DCSR) is, 0.30 (-0.14, +0.21) ton CO₂ per 100 square meter per year (tonC.100m^-2.Yr^-1), with CO₂ sequestration rate (CSR) at 2,067 (-1,179, +1,816)  tonC.Yr^-1. Variables which significantly affect DCS in City Parks in three different regression models are, Shannon Diversity Index (H’), Elevation (E), Sum Dominance Ratio of the Dominant Tree Species (SDR_dm), and Tree Density (TD). Meanwhile, variables which significantly affect DCSR are, E, TD, and SDR_dm. Three storage and sequestration potential models (Pesimistic, Realistic, and Optimistic scenarios), which were run for a ten year period, estimated areas for additinal tree planting between 114,089 – 329,718 m². The three modeling scenarios have the potential to increase, within the next 10 years: DCS by, 0.1 – 13.4  tonC.100 m^-2; CS, by, 116,3 – 5,126.1 tonC; DCSR by, 0.01 – 0.28 tonC.100 m^-2.Yr^-1; and CSR by, 13.4 – 863.9 tonC Yr^-1.