WANG Xiao.Studying Source of Sediment in Small Watershed Using Grain-size Analysis[J].Research of Soil and Water Conservation,2002,9(03):42-43.
“粒度分析法”在小流域泥沙来源研究中的应用
- Title:
- Studying Source of Sediment in Small Watershed Using Grain-size Analysis
- Keywords:
- the source of sediment; grain-size analysis; sediment yield in the intervale; sediment yield in gully fields; the method of least square
- 分类号:
- S157.1
- 摘要:
- 小流域泥沙来源是土壤侵蚀研究的重点内容，目前，国内外主要利用径流泥沙资料，采用统计分析方法来确定小流域不同地貌部位及不同侵蚀类型的产沙量。研究采用“粒度分折法”，对砒砂岩不同侵蚀类型区典型小流域泥沙来源进行了分析计算，结果表明：砒砂岩区小流域泥沙主要来源于沟谷地，占小流域总产沙量的79.39%～84.89%；沟间地产沙量占总产沙量的15.86%～20.61%。
- Abstract:
- To study the source of sediment in small watershed is the key to the study of soil erosion.Nowadays, the runoff sediment materials are applied both at home and abroad to determine the sediment yield of different erosive types in small watershed with various landforms by adopting statistic analytical method.The author analyzes and calculates the source of sediment in sandy rock area with typical erosive types by using the method of grain size analysis.The result shows that the sediment yield in sandy rock area mainly comes from the gully fields, which makes up 79.39% of the total sediment yield in small watershed;whereas the sediment yield in the intervale only accounts for 15.86%~20.61%.
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备注/Memo
收稿日期:2002-4-25;改回日期:。
基金项目:“八五”黄河上中游管理局重点课题“晋陕蒙接壤区砒砂岩分布区水土保持综合治理研究”部分内容
作者简介:王晓，男，（1962- ），陕西长武人，农学学士，黄委会绥德水保站副站长，高级工程师，从事水土保持试验研究、规划设计等工作.