Studies on the dynamics of upland field P pool under a long term application of fertilizer P in yellow soil area and their effects on P concentration in runoff showed that the contents of A1 P, Fe P and Ca P in soil cultivated layer increased greatly,and Olsen P and algae available P also accumulated obviously.

Estuary runoff and amount of transported sediments of Yellow River and ecological environments of Yellow River Delta;

Human-induced alterations in runoff of the Yangtze River;

Study on the runoff calculation method in watershed by using GIS;

Based on EMD the multiple time-scale analysis to the changes of natural annual runoff of the Guanting Reservoir;

Study on combination forecast method of annual runoff and its application in river basin;

Impacts of soil and water conservation measures on annual runoff in the upper Chaohe River Basin in northern China based on hydrological analysis method;