Abstract
Understanding the changes and drivers of water ecosystem services (WESs) can provide guidance for the management of ecological restoration programs (ERPs). This study analyzed the changes in WESs (water yield and water purification) and landscape patterns in the Jianghuai Ecological Economic Zone (JHEEZ) from 2000 to 2020 and revealed the effect of landscape patterns on WESs in different periods (development priority and ecological priority) through a geographic detector (GD) and geographic weighted regression (GWR). During the development priority period, there was an increase in landscape diversity and aggregation, as well as a decrease in landscape fragmentation and complexity. Additionally, the area of water bodies landscape decreased while the aggregation of cropland and built-up land increased. In contrast, during the ecological priority period, landscape diversity, fragmentation, and complexity increased, while landscape aggregation decreased. The water body area also increased, and cropland fragmentation increased. Water yield experienced an initial decrease and subsequent increase, while water purification continued to improve. Patch density and the contagion index are the main factors affecting WESs, and the improvement of water connectivity and the reduction of fragmented Landscape are of great significance to WESs. This study analyzed the impact of landscape pattern changes on WESs from a geospatial perspective and provided a reference for the sustainable development of ERPs in the JHEEZ.
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