A Quantitative Approach to Measure the Role of Urban Forest in a LocalCarbon Cycle
ABSTRACT
The general objective of this study is to analyze the contribution of urban forest in a local scale carbon turnover. It includes identification and quantification of the urban forest change dynamics regarded as carbon emission sources as well as those concerned as carbon sinks. The study was carried out in 2010 and based on a series of five years data compiled from a municipality in West Java Province as a case. The overall carbon sources were categorized into four sectors covering energy sector, solid waste, agricultural and forestry as well as animal husbandry sector whereas the carbon sink was identified merely in urban forest and agricultural sector. The amount of a single carbon emission was calculated by multiplication between a source unit and its corresponding emission factor. The total quantity of carbon emission generated by the municipality was summation of the whole sources from the entire sectors. The amount of the whole carbon sink was summation of the total sequestered carbon. The result indicated that the average municipality carbon emission was 2.0 MTon CO2 per year whereas the net sink was approximately 0.05 MTon CO2 per year. The contribution of urban forest to sequester carbon emission was merely 0.04 % of the total municipality carbon sources. The minor role of the urban forest to sequester carbon is due to its limited area and its huge carbon emission as a metropolitan city.
Keywords: Urban forest, carbon cycle, quantitative approach, source, sink
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