Research on watershed basic unit concentration flow

The area-time curve of V-shaped watershed basic unit,namely geomorphology instantaneous unit graph,is deduced,through which time unit hydrograph is gotten.Then the concentration flow process of watershed basic unit is simulated through the convolution between time unit hydrograph and net rainfall process.Taking Xingfeng watershed as a case,its watershed basic unit concentration flow is simulated and the results are satisfactory.The method proposed in this paper develops the theory of watershed concentrateion flow to some extent,and are theoretically and practically significant to the development of water resources,flood prediction,water pollution prevention and ecological conservation of swamp area.