Simulation of hydrological effects under changes of land-use patterns in Yixun River watershed
By using SWAT model , the runoff and sediment process of the Yixun River basin under the land use conditions of 1985 and 2010 and 3 land use patterns were simulated .Three indicators , the annual uneven distribution coefficient of runoff , conservation index and the annual uneven distribution coefficient of sediment , were selected to analyze the hydrological effects for different land-use patterns .The result shows that the ecological protection pattern can reduce sediment loss and increase soil and water conservation capacity;the urban expansion pattern would reduce the sediment yield , resulting in significant increase in runoff and is not conducive to urban safety;the farmland protection pattern is favorable for the water conservation , but results in sediment increase .In the process of urban development , the hydrological effects and economic benefits should be taken into ac-count.
SWAT modelland-use patternshydrological changesYixun River watershed
国家科技期刊平台
NSTL
万方数据
维普
