Grey Rational Degree Analyses for Effects of Different Vegetation Types on Overland Flow

Li Xiangyun; Wang Yujie

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Grey Rational Degree Analyses for Effects of Different Vegetation Types on Overland Flow

- Grey Rational Degree Analyses for Effects of Different Vegetation Types on Overland Flow
- Bulletin of Soiland Water Conservation Vol. 26, Issue 2, Pages: 83-86(2007)
- 作者机构：
  
  北京林业大学水土保持学院,北京,100083
- 作者简介：
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- Published：2007
- 稿件说明：
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Li Xiangyun, Wang Yujie. Grey Rational Degree Analyses for Effects of Different Vegetation Types on Overland Flow[J]. Bulletin of Soiland Water Conservation, 2007, 26(2): 83-86.
DOI：

Li Xiangyun, Wang Yujie. Grey Rational Degree Analyses for Effects of Different Vegetation Types on Overland Flow[J]. Bulletin of Soiland Water Conservation, 2007, 26(2): 83-86. DOI：

摘要

影响地表径流的因素有气候、地质、植被等诸多因子

植被因素的影响甚为突出。以重庆缙云山4个不同植被类型小区为研究对象

采用灰色关联度的方法

对影响因子进行了对比分析。分析了降雨状况参数和植被状况参数对地表径流的影响

结果发现降雨量与径流的关联度最大

影响参数中影响程度顺序为:乔木覆盖度>林分高度>枯落物的厚度>坡度>林下木的覆盖度>土壤厚度;在对小区植被类型之间的灰色关联度差异分析中

发现混交林与径流的关联度最大

其次为阔叶林、楠竹林

最小为农地。

Abstract

There are many different factors affecting overland flow

such as climate

geology and vegetation

among which vegetation type is a key factor. In this study

four different vegetation types in J inyun Mountain

Chongqing City

were investigated using the grey rational degree. The analyses of precipitation and vegetation ef2 fect s on overland flow indicate the highest rational degree of precipitation with surface runoff. The parameters contribute to overland flow in the descending order of canopy density

standing foresTheight

litter thickness

slope degree

coverage and soil thickness. The rational degrees of different vegetation types descend in the order of mixed wood

broadleaved forest ry

bamboo forest ry and cropland.

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