泥沙研究2026，Vol.51Issue(3)：24-32,9.DOI:10.16239/j.cnki.0468-155x.2026.03.004
地形数据及因子对山地流域RUSLE-SEDD模型的影响研究
Influence of terrain data and factors on the RUSLE-SEDD model in mountainous watersheds
摘要
Abstract
Selecting a typical mountainous watershed(Zhaojue River Basin),this study applied the RUSLE-SEDD model to calculate annual sediment transport from 1990 to 2022 under combined scenarios involving four DEM resolutions,two slope length(L)factor algorithms,and six slope length cutoff values.The accuracy var-iations between calculated values and measured values were compared,and PLS-SEM was employed to reveal the impact of terrain data and factors on model results.The results indicated that:the SFBUFL and GFBUCA algorithms were more suitable for DEM data with resolutions finer than 30 m and coarser than 60 m,respec-tively,with the SFBUFL algorithm showing a more pronounced response to changes in DEM resolution;in model calculations based on the SFBUFL algorithm,DEM resolution and slope length cutoff value jointly con-tributed 27％to the influenceon the interannual sediment transport variations;for mountainous watersheds,when using DEM data with resolutions better than 30 m,the slope length cutoff value is recommended to be se-lected within the range of 45～80 m based on actual terrain conditions.关键词
流域输沙/RUSLE/SEDD/坡长因子/坡长截断值/泥沙输移比Key words
watershed sediment transport/RUSLE/SEDD/L factor/slope length cutoff value/sediment delivery ratio分类
建筑与水利引用本文复制引用
单文清,秦伟,刘飞,张艾琳,丁琳,周金星,黄婷婷..地形数据及因子对山地流域RUSLE-SEDD模型的影响研究[J].泥沙研究,2026,51(3):24-32,9.基金项目
国家重点研发计划课题(2022YFF1302902) （2022YFF1302902）
中国科协青年人才托举工程项目(YFSS20240006) （YFSS20240006）
中国水利水电科学研究院青年人才托举项目(SE110145B0022025) （SE110145B0022025）
