水土保持通报2017，Vol.37Issue(4)：236-241,6.DOI:10.13961/j.cnki.stbctb.2017.04.040
甘肃省黄土高原典型小流域侵蚀沟道特征
Characteristics of Erosion Gullies in Small Watershed Scale on Loess Plateau in Gansu Province
石万里 1王守俊 2张富1
作者信息
- 1. 甘肃农业大学林学院,甘肃兰州730070
- 2. 甘肃省水利厅水土保持局,甘肃兰州730000
- 折叠
摘要
Abstract
[Objective] The paper studied the classification of the erode gullies in small typical watersheds on the loess plateau in Gansu Province aimed to lay foundation for the better development of soil and water conservation and ecological management in the Loess Plateau.[Methods] Based on the results of the first national water resources and water power investigation,using GIS technology and math model of physiognomy geometry ration,the gullies were graded quantitatively and erosion gullies are classified from geology,geomorphology,size,and shape.Therethrough,the characteristics of erosion gullies in the Loess PIateau were inferred from.[Results] The results showed that in small watershed scale on Loess Plateau in Gansu Province,most of the erosion gullies are those,in hilly and gully regions,that have semi-opened,moderate fragmented and semi-main groove typed characteristics;In Loess gully regions,that have semi-opened,moderate fragmented and branch gully typed characteristics.[Conclusion] In the hilly and gully region,the fifth gully is narrow and steep,the gully fragmentation is high and the amount of soil erosion is great.It is difficult to manage and use the gullies.关键词
黄土高原/小流域/侵蚀沟道/分级分类Key words
Loess Plateau/watershed/erosion gullies/classification分类
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石万里,王守俊,张富..甘肃省黄土高原典型小流域侵蚀沟道特征[J].水土保持通报,2017,37(4):236-241,6.
