| Principal component study on the driving factors of the ecological quality degrading of the typical farming-pastoral ecotone in west Jinlin province |
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| DOI：10.7606/j.issn.1000-7601.2008.05.45 |
| Key Words: Principal component analysis method GIS ecological quality evaluation the farming-pastoral ecotone driving factors |
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| Abstract: |
| On the basis of the ARC/INFO data-evaluating platform, the component analysis method is applied to extract the main driving-factors that leading to the ecological quality degradation in west Jilin province, then the order of the ecological quality between the nine counties and cities in west Jilin province and the corresponding driving factors are determined though evaluating the ecological quality status of this area. Result s show that the main driving-factors that leading to the ecological quality degradation in west Jilin province are the pressure of population and grazing, drought index, the degree of the Soil Salinization. The order of the ecological quality between the nine counties and cities in west Jilin province are as follows: Fuyu county, Qianguo county, Chanling county, Taonan city, Tongyu County, Qianan County, Da'an city, Baicheng city, Zhenlai County. |
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