Factor Analysis of Environment Background in Water Erosion of China

ZOU Ya-rong; ZHANG Zeng-xiang; ZHAO Xiao-li; LIU-Bin; ZHANG Zong-ke

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Factor Analysis of Environment Background in Water Erosion of China

- Factor Analysis of Environment Background in Water Erosion of China
- Bulletin of Soiland Water Conservation Vol. 20, Issue 4, Pages: 19-21(2001)
- 作者机构：
  
  中国科学院遥感应用研究所,北京,100101
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Published：2001
- 稿件说明：
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ZOU Ya-rong, ZHANG Zeng-xiang, ZHAO Xiao-li, et al. Factor Analysis of Environment Background in Water Erosion of China[J]. Bulletin of Soiland Water Conservation, 2001, 20(4): 19-21.
DOI：

ZOU Ya-rong, ZHANG Zeng-xiang, ZHAO Xiao-li, et al. Factor Analysis of Environment Background in Water Erosion of China[J]. Bulletin of Soiland Water Conservation, 2001, 20(4): 19-21. DOI：

摘要

土壤侵蚀的产生是在一定的环境背景上的

但各环境因子的作用是不同的。在合理地选取环境背景因子与样本层的基础上

以GIS为技术支撑

采用等级打分的方法

运用因子分析

选取环境背景因子

从而对环境因子进行分析。

Abstract

There are so many environmental background factors in soil erosion region

such as slope

land use

DEM

etc.However

not all factors play a role in soil erosion equally.Problem about how to identify the main factors in water erosion in China are discussed.Firstly

according to the conditions of study area

environmental background factors that are translated into 100m×100m data format in GRID are choosen.Secondly

degrees for each factor according to the difference degree to soil erosion are set.Each environmental background has different degrees.Thirdly

with the MGE and GIS

we resample in study area in China in equal distance

so that we get lots of samples that can illustrate the study area.Then according to actualsi tuation of each sample

values are put into each sample in line with degrees in the step 2. Finally

all datum are put into software package SPSS for factor analysis.Through factor analysis

the main factors can be choosen.This model is based on expert knowledge and object analysis

overcoming the man-made factor and showing the situation objectively.

关键词

Keywords

references

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