利用主分量分析法对土地沙漠化的研究

The Application of Principal Component Analysis in Desertification Researches

采用多元分析法(主分量分析法)对内蒙古东部地区土地沙化各因子之间关系进行综合探讨,找出主导因子。由于各旗县的现状不同,造成土地沙化的成因不尽相同,但人口增长、农田面积扩大、自然资源的不合理利用是土地沙化的主要人为因素。通过对各因子的综合分析,提出了治理沙漠化土地的主要对策。

Because of human beings activity, the world＇s natural ecosystems have been partly destroyed and suffering serious desertification. It＇s now an urgent problem to harness desert for human beingg living. In this paper, the author studied the reasons affecting land desertification and tries to extract the determinant ones by principal component analysis. The actuality of every county in Inner Mongolia are different, the reasons causing desertifi- cation are different too. But population increasing, farmland spreading , natural resource being used inconsequently are main reasons of desertification. By comprehensive analyzing of many factors, the author points out the main countermeasures to manage the desertification land.