Impact of land use change on the water yield of typical small watershed in gully region at loess plateau—A case study from Wangdonggou watershed in Changwu，Shaanxi Province

The impact of land use change on the water yield of Wangdonggou watershed of gully region at loess plateau in Changwu was studied.The results show that the characteristics of land use change are mainly reflected in the decrease of farmland and pasture area and the increase of forestland and orchard area.Compared to 1986，the runoff decreased by 5747m³ in 1996 when the precipitation in 1988 was used，and it will decrease by 5914m³ in 2010，which makes the collected water reduce，the storage of soil water increase and the eco-environment continuously develop.