黄河源区水源涵养提升空间管控策略OA

Accurately revealing the spatiotemporal patterns and driving mechanisms of the evolution of water conservation in the source region of the Yellow River(SRYR)and scientifically formulating strategies to enhance water conservation capacity are crucial for the ecological pro-tection and high-quality development of the Yellow River Basin.This article was based on multi-source data,such as digital elevation models,land use,soil,meteorology,and hydrology,in the SRYR,and constructed a physical mechanism model of water conservation coupled with frozen soil,snow cover,and soil hydrological processes.Combined with the hierarchical clustering method,the fine division of Water Conser-vation Units(WCU)was completed.The single-factor and two-factor interactive driving effects of 13 elements were quantitatively analyzed using geographic detectors,and differentiated conservation capacity improvement measures of each WCU were proposed.The results showed that:The SRYR was divided into 10 WCUs,and the spatial differentiation within each WCU was significant.Among them,WCU6 had a stronger conservation capacity(338.0 mm),while WCU10 had a weaker capacity(25.5 mm).Precipitation is the dominant driver of varia-tions in water conservation,exhibiting the strongest interactive effects with actual evapotranspiration,soil temperature,and ecosystem type.Based on the differences in driving mechanisms,the 10 WCUs are divided into two spatial control types:natural restoration and artificial res-toration.The artificial restoration area is divided into high-,medium-,and low-potential restoration areas.Targeted differentiated ecological restoration measures and long-term management mechanisms are proposed.