[Spatiotemporal Changes and Driving Factors of Ecosystem Services in Taiyuan City].

Abstract

To investigate the spatial and temporal changes and causes of ecosystem services （ESs） in Taiyuan City, six ESs indicators were selected based on five periods of land use data from 2000 to 2020, while ESs were assessed using multi-source data with the help of the InVEST model and the revised universal soil loss equation （RUSLE）. Further, the Spearman correlation coefficient was used to analyze trade-offs and synergies among ESs. Finally, geodetectors were used to explore the driving factors. The results showed that： ① Land use types in Taiyuan City were dominated by grassland, forest, and arable land, with construction land expanding by 170.1 km², forest area increasing by 404.6 km², and water area increasing by 61.3 km² simultaneously arable land and grassland decreasing from 2000 to 2020. A notable transfer of arable land to grassland and grassland to forest had occurred. ② ESs increased overall； carbon stock, oxygen release, soil retention, and water purification increased； habitat quality first increased and then decreased； and food provision decreased. ③ There was mainly a synergistic relationship between ESs. Carbon stock, habitat quality, and water purification were trade-offs and weakened over time. Land use/cover change （LUCC）, elevation （DEM）, and temperature were important drivers of ESs. A significant impact of slope on soil retention, anthropogenic activities on food provision, and precipitation on water purification was observed. The results of this study provide scientific basis for ecological protection and sustainable development in Taiyuan City.