基于SCS降雨-径流模型的大凌河流域水量模拟研究

摘要

Recent SCS rainfall-runoff model can be fully considered due to the underlying surface runoff im-pact has been widely used in watershed basin runoff calculations.SCS for the analysis of rainfall-runoff model applied on Daling River Basin in order to Daling city of sub-catchment area above hydrological stations as the study area,based on sub-city of Hydrological Station 2001-2010 Hydrological data ,simulation Basin 2001-2010 flow process.Additionally, this article relies on rainfall runoff Moses SCS quantitatively analyzed the im-pact of different land use scenarios on watershed runoff depth.The results show that L:SCS rainfall-runoff mod-el in Daling River Basin has better applicability ,simulated runoff relative error less than 10% uncertainty fac-tor of 0.8 or more;urban land increased by 10%,increase runoff basin approximately 2.78%,10% forest,wa-tershed runoff by about 5.30%.%近期SCS降雨-径流模型由于可充分考虑下垫面对流域产流影响儿被广泛用于流域产流计算。为分析SCS降雨-径流模型在大凌河流域的适用性，以大凌河大城子水文站以上集水区域为研究区域，基于大城子水文站2001―2010年水文数据，模拟流域2001―2010年流量过程。此外，本文依托于SCS降雨径流摩西定量分析了不同土地利用情景模式对流域径流深的影响。研究结果表明： SCS降雨-径流模型在大凌河流域具有较好的适用性，模拟径流深相对误差小于10%，确定性系数达0.8以上；城镇用地面积增加10%，流域径流深增加约2.78%，林地增加10%，流域径流深减少约5.30%。