An analysis to the combined factors of topography and lithology in the gravitational erosion of Loess Plateau

Li Honglian; Cai Xiangxing

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An analysis to the combined factors of topography and lithology in the gravitational erosion of Loess Plateau

- An analysis to the combined factors of topography and lithology in the gravitational erosion of Loess Plateau
- Bulletin of Soiland Water Conservation Vol. 8, Issue 6, Pages: 1-9(1989)
- 作者机构：
  
  中国科学院兰州冰川冻土研究所
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Published：1989
- 稿件说明：
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Li Honglian, Cai Xiangxing. An analysis to the combined factors of topography and lithology in the gravitational erosion of Loess Plateau[J]. Bulletin of Soiland Water Conservation, 1989, 8(6): 1-9.
DOI：

Li Honglian, Cai Xiangxing. An analysis to the combined factors of topography and lithology in the gravitational erosion of Loess Plateau[J]. Bulletin of Soiland Water Conservation, 1989, 8(6): 1-9. DOI：

摘要

本文重点阐述中国近期冰川泥石流的区域分布、发育条件与类型特征。中国的冰川泥石流主要分布在东经102°以西、现代冰川急剧消退的10多座山系中

其中海洋型冰川区泥石流最发育

亚大陆型冰川区泥石流次之

极大陆型冰川区泥石流最弱。按成因划分泥石流类型有冰雪消融型、冰雪融水与雨水混合型及冰湖溃决型。泥石流的发生率与规模

也以海洋型冰川区泥石流为大

如西藏古乡泥石流1964年发生85次

最大流量2.86万立方米/秒。

Abstract

The grievous gravitational erosion on Loess Plateau is the major ero- sion type of the region.The paper

with the quantitative geornorpholo- gical method

having analysed the topographical factor in gravitational erosion

raised the concept of topographical factor value

worked out the isograms of regional height facing vacancy for the area and the topogra- phy factor

proposed topographical index of gravitational erosion strength under different combining condition of lithology

it also explores the re- gional nature of gravitational erosion strength.

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