The Ecological Relationship of Groundwater–Soil–Vegetation in the Oasis–Desert Transition Zone of the Shiyang River Basin

Groundwater is an important ecological water source in arid areas. depth (GWD) indicator that affects vegetation growth and soil salinization. Clarifying the coupling relationship between vegetation, groundwater, areas beneficial to prevention of environmental problems such as desertification Existing studies lack research on water–soil–vegetation typical areas, especially shallow groundwater In this study, area Minqin, northwest China, was taken study area, surveys samples collection were conducted. The relationships fractional coverage (VFC) GWD, salinity, moisture, precipitation comprehensively analyzed. results showed low salinity riparian zone high other shallow-buried with salinization problems. Soil negatively correlated VFC (R = ?0.4). When >3 g/kg, less than 20%. Meanwhile, when GWD >10 m, usually 15%. <3 range 4–10 positively moisture content 0.99), mainly depended surface water, which significantly affected by precipitation. 4 ?0.78), relied water. There are obvious differences Minqin. Hence, it reasonable consider zoning grading policies for protection.