Spatiotemporal evolution of the water conservation capacity in the Yinshenggou from 1980 to 2013
Water conservation is an important ecological service that influences terrestrial ecohydrolog-ical and anthropogenic processes.A SWAT hydrological model was constructed for the Yinshenggou wa-tershed.We analyzed and assessed the spatiotemporal evolutionary patterns of water conservation capacity from 1980 to 2013,and used Geo-detector to analyze the factors that drove spatial differentiation in water conservation capacity.The results show that:(1)SWAT hydrological model performance is satisfactory.(2)On the time scale,the water conservation capacity of Yinshenggou Basin shows a non-significant increasing trend,with a multi-year average water conservation volume of 141.84mm and a water conservation index of 0.322,which is more closely related to precipitation and water yield.(3)At the spatial scale,the high-value areas of water conservation function are mainly concentrated in the runoff formation area in the upper part of the watershed,and the correlation between water conservation and water yield,as well as NDVI is the closest.(4)Geo-detector suggests that topographic conditions play a dominant role in the spatial differentiation of water conservation capacity,with slope in particular interacting most strongly with other factors.The re-sults of the study can provide scientific references for ecological protection,water resource management,and ecological spatial planning in the Yinshenggou watershed.
water conservation capacitySWAT hydrological modelspatiotemporal evolutionYinshenggou
NETL
NSTL
万方数据
