晋西黄土区小流域场暴雨径流泥沙模型研究

Small Watershed Runoff and Sediment Model in the Western Shanxi Province in Loess Plateau

该文研究黄土区以小流域为尺度的暴雨径流泥沙规律，为该地区林业生态工程建设和林业生态工程效益评价提供理论依据．该文以森林水文的较大研究尺度流域综合试验为出发点，在晋西黄土区小流域分类的基础上，选择了具有代表性的典型小流域１１个，对这些小流域进行了３～８ａ的定位观测，获得了１３１场暴雨产流和产沙资料．在分析这些资料的基础上，系统地研究了降雨、土壤入渗、流域产流、汇流及输沙的理论与方法，获得精度较高、适用性较强的流域径流、泥沙统计模型和数理模型．

In order to study the laws of rainstorm runoff sediment based on the small watershed in the Loess Plateau,and then provide theorectical basis for the construction and benefits appraisal of forestry ecology projects in this area,the research was started with the watershed comprehensive experiment,which is large research scale of forest hydrology;and 11 representative small watersheds of different types were selected according to the small watershed classification in the western Shanxi Province.After 3～8 years fixed observation in these small watersheds,data of runoff and sediment from 131 rainstorms are collected.By analysing these data,a systematic research on the theory and method of rainfall,soil water infiltration,watershed runoff,watershed converge,watershed sediment yield and transportation was carried out.The models of watershed runoff and sediment statistics are obtained,which are practical and have great accuracy.