Trade-offs and driving factors of multiple ecosystem services and bundles under spatiotemporal changes in the Danjiangkou Basin, China

作者：Jian Zhang, W. Guo, Changjin Cheng, Zhiying Tang, Lianghua Qi · 发表于：Ecological Indicators · 年份：2022 · DOI：10.1016/j.ecolind.2022.109550 · 被引用次数：29 · 研究领域：Land Use and Ecosystem Services、Conservation, Biodiversity, and Resource Management、Ecology and Vegetation Dynamics Studies

The Danjiangkou Basin (DJKB) is an important water source area for the South-to-North Water Diversion Middle Route Project in China. A comprehensive understanding of various ecosystem service (ES) bundles and their socioecological driving factors in this area remains important for ecological management and decision-making. Eight representative ES types within the DJKB were analyzed: food supply (FS), carbon sequestration (CS), habitat provision (HP), nitrogen retention (NR), phosphorus retention (PR), soil retention (SR), water yield (WY), and outdoor recreation (OR). The Spearman correlation coefficient was used to reveal trade-offs and synergies between paired ESs at subwatershed, grid, and regional scales, in addition to exploring their relationship with socioecological drivers. Using Getis-Ord Gi* and superposition analysis, spatiotemporal hotspots were superimposed, and a distribution map was generated. Lastly, K-means cluster analysis was used to analyze the spatiotemporal dynamics of ES bundles (ESBs) in 2000, 2005, 2010, 2015, and 2020. The results revealed that: (1) from 2000 to 2020, the eight ESs displayed clear spatiotemporal variability at the subwatershed scale: FS increased by 40.55 %, NR and PR first decreased, then increased. (2) Differences in trade-offs and synergies between spatiotemporal ESs at subwatershed, grid, and regional scales were also observed. (3) Superpositioning of hotspots revealed that only 1.33 % of the basin provided six ES types (except F...