Spatiotemporal heterogeneity and influencing mechanism of ecosystem services in the Pearl River Delta from the perspective of LUCC

摘要

Land use/land cover change (LUCC) has considerable impact on ecosystem services.It is essential to quantify the spatiotemporal heterogeneity of ecosystem services from the perspective of LUCC,which will benefit regional land management and ecological protection.We analyzed land use change in the Pearl River Delta from 2000 to 2015,and we used a spatially explicit integrated modeling tool (InVEST) for quantification of ecosystem services-water yield,carbon storage,soil retention,and food supply.The results revealed increases in the areas of grassland and built-up land,and decreases in the areas of woodland,cropland,water body,and unused land during 2000 to 2015,which have caused increase in water yield and carbon storage,while decrease in soil retention and food supply.The dynamic changes of woodland,grassland,cropland,and built-up land were the main driving factors in the relationship of trade-offs and synergies among the four ecosystem services,which are ubiquitous.Those all illustrate the importance of considering ecosystem services in decision making related to land use and land management.