Initiation stage to regulate the caragana growth and soil water in the semiarid area of Loess Hilly Region, China The effects of plant density on soil water and plant growth on semi-arid loess hilly region Effect of Artificial Caragana korshinskii Forest on Soil Water in the Semiarid Area of Loess Hilly Region A Review of Soil Water Carrying Capacity for Vegetation in Water-Limited Regions