Responses of ecosystem carbon stocks to land use change on the west side of the Pearl River
Research on the relationship between ecosystem carbon stocks and land use change is crucial, as it is significant for the coordinated development between economy and eco-environment in the rapidly-urbanized area. The carbon stocks on the west side of the Pearl River for the years 1990, 2000, 2010 and 2015 were simulated using the InVEST model and the ArcGIS software. Then, the responses of the ecosystem carbon stocks to land use change were analyzed. The results showed that: (1) dramatic change in land use on the west side of the Pearl River happened during the period 1990-2015; cropland decreased displayed the fasted reeducation, while build-up land showed the largest increase in the study area. (2) The transformation between different land uses occurred mainly between grassland, cropland, build-up land, forest, and water during the period, especially in the cities of Foshan, Zhongshan and Zhuhai. (3) The ecosystem carbon stocks on the west side of the Pearl River showed a decreasing trend, with the ecosystem carbon stocks of 1528.1×105 t, 1511.4×105 t, 1504.5×105 t and 1513.8×105 t for the years 1990, 2000, 2010 and 2015, respectively. (4) The total ecosystem carbon stocks were reduced by 9.65×105 t due to land use change during the last 25 years. The reduction in cropland, water and the unused land was beneficial for the increase in carbon stocks; however, the reduction in forest, grassland and the build-up land led to the decrease in carbon stocks in the study area.
carbon stocksInVEST modelland use changethe west side of the Pearl River
国家科技期刊平台
NSTL
万方数据
维普
