The watershed water yield was quantified based on InVEST model,and Theil-Sen+Mann-Kendall and geographical detector were used to explore the characteristics of spatial differentia-tion.The results show that the water yield is"W"fluctuation,the high value areas are concentrated in the northwest and south of the basin,and the low value areas are mainly distributed in the east and cen-tral regions.Trend analysis shows that the water yield mainly increases significantly,and the area ac-counts for more than 80％.Forest land and cultivated land,as the largest land in the basin,the com-bined water yield account for more than 90％of the total,and is the largest water yield in the basin.The average annual precipitation is the dominant factor causing the spatial heterogeneity of water yield,and the interaction with vegetation coverage and evapotranspiration plays the dominant role.As an im-portant water source and ecological barrier area of the Yangtze River Delta,it is of great significance to explore the water production service of Qiandao Lake Basin to protect the safety of water resources and realize the high-quality social and economic development.
关键词
新安江流域/产水量/趋势分析/驱动因素
Key words
Xin'an River basin/water yield/trend analysis/driving factors
维普
万方数据