Scale effects on the relationships of water-related ecosystem services in Guangdong Province, China
Scale effects on the relationships of water-related ecosystem services in Guangdong Province, China
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DOI：
10.1016/j.ejrh.2022.101278
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发表时间：
2022-12
期刊：
影响因子：
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通讯作者：
Qiongrui Zhang;Xuechao Sun;Jiaojiao Ma;Song-jun Xu
中科院分区：
文献类型：
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作者：
Qiongrui Zhang;Xuechao Sun;Jiaojiao Ma;Song-jun Xu
研究重点尺度是影响生态系统服务功能之间联系的关键因素，但不同尺度上与水相关的生态系统服务功能之间的关系尚不清楚。这项研究评估了2000-2020年间产水量、净水和土壤保持的时空变化。利用投资模型描述了不同尺度下的生态系统，并利用相关分析对不同尺度上的生态系统进行了权衡分析。(2)2000-2020年，建设用地比例增加最多，特别是在珠江三角洲，而耕地和森林的比例呈下降趋势；2)在研究期间，3个生态系统呈现出增加的趋势，但水净化和土壤保持服务呈下降趋势；3)在两个尺度上，水量与其他生态系统之间存在着权衡，土壤保持与水净化之间存在协同作用；(4)珠江三角洲各尺度间的相关系数大于整个区域的相关系数，且两个尺度的相关系数随时间变化方向不同。本研究扩展了生态系统服务之间关系的尺度效应，并从土地利用规划和利益相关者的角度提出了可持续发展的建议。
Study regionGuangdong Province (GD) and the Pearl River Delta urban agglomeration (PRD) in China.Study focusScale is a key factor affecting the connections among ecosystem services, but the relationships between water-related ecosystem services (WRESs) at diverse scales remain unclear. This study evaluated spatio-temporal changes in water yield, water purification and soil retention from 2000 to 2020. The InVEST model was used to depict the WRESs, and correlation analysis was used to detect trade-offs in WRESs at different scales.New hydrological insights for the regioni) The proportion of construction land increased most from 2000 to 2020, especially in the PRD, whereas that of cultivated land and forest exhibited downward trends; ii) During the study period, the three WRESs showed an increase in GD, but water purification and soil retention services showed a decrease in the PRD; iii) for the two scales, trade-offs existed between water yield and other WRESs, and synergies between soil retention and water purification; and iv) The correlation coefficients among WRESs in the PRD were greater than in the whole GD, and the correlation coefficients of the two scales changed in different directions with time. This study expands the scale effect on the relationships among ecosystem services, and puts forward suggestions for the sustainable development of WRESs with consideration of land use planning and stakeholders.