长期以来 ,科学家和工程师们都试图计算出不规则集水区的径流量。用于降雨—径流模型的最常用方法是通过线性理论来确定某盆地的单位瞬时水位曲线图 (ＩＵＨ)。最近 ,地形学技术已发展到可将径流与集水区地形特征联系起来。这些地形特征从集水区已有的拓扑关系图、空间图片等资 Scientists and engineers have long attempted to calculate runoff in irregular catchments. The most common method used for the rainfall-runoff model is to determine the unit instantaneous water level curve (IUH) of a basin using linear theory. Recently, topographic techniques have been developed to relate runoff to topographical features of catchments. These topographical features from the catchment topological map, space and other resources