湖泊科学2016，Vol.28Issue(5)：1141-1147,7.DOI:10.18307/2016.0525
基于地形地貌资料的Nash单位线参数规律研究
Study on the parameter regularity of Nash Unit Hydrograph based on DEM and geomor-phic data
摘要
Abstract
In order to apply Nash Unit Hydrograph to ungauged basins, we studied the parameter regularity of Nash Unit Hydro-graph based on the DEM data. The 29 medium and small basins in Wannan mountainous watershed are used as experimental basins to calibrate the parameters of Nash Unit Hydrograph. Geomorphic parameters and surface land cover types obtained by ArcGIS 10.1 are adopted to make multiple regression analysis and path analysis of the parameters, and establish the formula which calculates the parameters of Nash Unit Hydrograph based on the DEM. The result of regression analysis shows that the formula has high statistical significance. The result of path analysis shows that slope is the fundamental explanatory variable, which plays a decisive role in cal-culating the parameters of Nash Unit Hydrograph. The formula independent on measured data can be generalized and applied to un-gauged basins.关键词
Nash单位线/地形地貌因子/地表覆盖类型/多元回归分析/通径分析Key words
Nash Unit Hydrograph/geomorphic parameters/surface land cover types/multiple regression analysis/path analysis引用本文复制引用
周莉,李致家,韩通..基于地形地貌资料的Nash单位线参数规律研究[J].湖泊科学,2016,28(5):1141-1147,7.基金项目
国家自然科学基金项目（41130639，51179045）、水利部公益项目（201501022，201401034，201301068）和淮河流域气象开放研究基金项目（ HRM201404）联合资助 （）
