Distribution Choices of Elevation and Slope Orientation of Collapsing Hills

LIU Xi-lin; LIAN Hai-qing

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Distribution Choices of Elevation and Slope Orientation of Collapsing Hills

- Distribution Choices of Elevation and Slope Orientation of Collapsing Hills
- Bulletin of Soiland Water Conservation Vol. 30, Issue 4, Pages: 32-36(2011)
- 作者机构：
  
  1. 中山大学地理科学与规划学院广东广州 510275 陕西杨凌,712100
  2. 中山大学自然灾害研究中心,广东,广州,510275
- 作者简介：
- 基金信息：
- DOI：
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- Published：2011
- 稿件说明：
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LIU Xi-lin, LIAN Hai-qing. Distribution Choices of Elevation and Slope Orientation of Collapsing Hills[J]. Bulletin of Soiland Water Conservation, 2011, 30(4): 32-36.
DOI：

LIU Xi-lin, LIAN Hai-qing. Distribution Choices of Elevation and Slope Orientation of Collapsing Hills[J]. Bulletin of Soiland Water Conservation, 2011, 30(4): 32-36. DOI：

摘要

崩岗侵蚀地貌在华南地区广泛分布，近年的崩岗普查为科学研究提供了详实的资料。根据统计结果，重新认识了早期提出的崩岗侵蚀地貌的分布具有海拔高程和坡向选择性的特点。通过对几个典型崩岗发育区资料的分析表明，人类生产活动的高程范围影响着崩岗的发育和分布，崩岗分布的地形相对高差研究较海拔高程研究更具现实意义。以推理方式质疑已有崩岗侵蚀地貌分布坡向性选择的成因解释，并提出可能是由于统计盲点而导致的表象性误差。分析结果表明，太阳辐射—崩岗发育的推论有其限制条件，应将人类生产活动作为崩岗侵蚀地貌发育新的驱动力给予充分认识。

Abstract

Collapsing hills are widely distributed in Southern China.In recent years

the survey of collapsing hills has pr ovided anumber of data for scient ificstudies.Based on statistical data

this study recognized the problem of elevation and slope orient at ion choices of collapsing hills in South China

and considered it might be doubtful.The explanations for the chioce phenomena have been renewed.Typical collapsing hill erosion studies in Southern China show that

human activities have been the main inf luencing fact or on collapsing hill dist ribution

and the relief of collapsing hill erosion is more significant than the elevation.Therefore

the previous explanations of the choices might be not always correct.The argument that more sun radiation results in more collapsing hills on south slope than on north slope

may be right but only under the condition of no vegetation cover slopes.Statistical errors might be the reason why most collapsing hills prefer south slope to north slope.Finally

the study concludes that the influence of human activities on collapsing hills should be paid more at tention.

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