Hydrological Effects of Water and Soil Conservation Measures in Loess Plateau

摘要

Taking the two typical tributaries in the loess plateau as an example, the hydrological effects of water and soil conservation measures were studied with parallel comparative analysis method. The results show that water and soil conservation measures can reduce annual runoff and sediment module, cut down flood peak discharge and lower sediment concentration efficiently. And meanwhile, it also can delay the occurred time of flood peak; shorten the flood duration in small-scale watershed. Although the measures can change the relationships between runoff, sediment and rainfall, it has no significant effects on correlativity between these factors.