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中文摘要：
对基于栅格单元的分布式水沙物理模型在国内的应用进行研究。在介绍CASC2D-SED概念的基础上,研究其产流及产沙模块在国内半湿润地区以及产流模块在无资料地区径流模拟中的适用性。选取宁夏三关口流域以及好水川流域为典型研究流域,对三关口流域1983—1987年8场洪水进行了产流及产沙过程模拟,结果表明：模型的产流及产沙模块在三关口流域均取得良好的模拟效果,验证了模型的合理性及适用性。同时将三关口流域的参数移用于好水川流域,进行2010年及2011年4—9月的径流模拟,得到流域内15个计算点及流域出口处的日来水量,经验证,模型模拟结果可靠,可用于无资料地区的径流模拟。
英文摘要：
CASC2D-SED is a physically distributed water-sand model based on a grid unit.The application of this model to Chinese river basins was studied.Two scenarios were studied： in the semi-humid Jinghe River Basin with long-term measured flow and sediment data,we studied the applicability of the hydrological simulation,and in ungauged Weihe River Basin,we studied the applicability of the runoff module.The CASC2D-SED model was applied to the Sanguankou and Haoshuichuan watersheds in Ningxia.The model was used to simulate eight flood events in the Sanguankou Watershed from 1983 to 1987.The results show that the runoff module and the sediment module of the model can be applied to the study area with relatively high accuracy,verifying the rationality and applicability of the model.Then,the runoff module of the model was used for hydrological process simulations to obtain the daily water quantity of the outlet and 15 calculation points from April to September in 2010 and 2011 in the Haoshuichuan Watershed.The results show that the runoff module can provide accurate simulations and can be used for runoff simulation in ungauged basins.
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