摘要
在详细分析了皇甫川流域各种产沙地层的产沙特征及饥械组成和利用河口悬移质泥沙的机械组成作分析对比的基础上、应用等量原理建立数学模式,得出流域内基岩、上新世红色粘土、第四纪黄土和风成沙等地层的相对产沙量分别为68.49％、1.02％、30.37％和0.12％,分析误差小于4％。指出了基岩产沙为流域泥沙的主要来源,认为目前水土保持工作的重点应是黄土分布地区。
This paper takes the Hangfu River Watershed being located at the edge of the Loess Plateau as an example. On the basis of analyzing the erosion features and grain size compositions of the strata in the basin and comparing the grain size compositions of the suspending sediments by the mathematical analysis, the comparative sediment yield of the basical rocks, red clay earths, loesses and aeolian sands obtained are 68.49%, 1.02%, 30.37% and 0.12% respectively. It also points out that the basical rock erosion is the main source of the river sediments. At present, the primary of the soil and water conservation is that we shouldt take the regions with the loess distribution as the harnessing centre.
出处
《水土保持学报》
CSCD
北大核心
1990年第4期29-36,共8页
Journal of Soil and Water Conservation
关键词
泥沙来源
数量分析
皇甫川流域
Loess Plateau Huangpu River Watershed sedimenL-yield strata sediment yielded by basical rocks equal principle
