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Urbanization is undoubtedly one of the most significant anthropogenic forces affecting global carbon cycle.This study used a stock-change method to estimate the carbon storage and change during the urbanization process in urban China from 1985 to 201.In particular,the carbon storage and change in urban vegetation and urban soil,are estimated in this study.The results show that urban soils are the major carbon pools in urban areas.Along with urban expansions,urban vegetation becomes sources of carbon due to loss of biomass,whereas urban soils act as sinks of carbon because increasing urban areas enhance the carbon storage in them.Given the continuous urbanization process in China,this study has implications for urban managers to enhance carbon storage through urban vegetation and soils,hence offsetting CO2 emissions from fossil fuel burning.