Runoff is an essential factor for regional soil and water loss.A set of algorithm for regional runoff estimation is initially designed based on the previous research,incorporated with GIS function.The process considered includes precipitation,interception,infiltration,storage in micro depressions,overland flow and so on.The region is divided into regular cells based on DEM,and the monthly process of rainfall is divided into time steps.The individual cell and time step are regarded as basic computing units.R...
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