地理研究

地理研究 ›› 2001, Vol. 20 ›› Issue (6): 731-738.doi: 10.11821/yj2001060011

• 论文 • 上一篇    下一篇

基于因子分析的中国西部土地利用程度分区

王秀红1, 何书金1, 张镱锂1, 罗明2   

  1. 1. 中国科学院地理科学与资源研究所, 北京 100101;
    2. 北京大学城市与环境学系, 北京 100871
  • 收稿日期:2001-09-10 修回日期:2001-10-22 出版日期:2001-12-15 发布日期:2001-12-15
  • 作者简介:王秀红(1964-),男,山西昔阳人,博士,副研究员,从事土壤、地生态学与土地资源研究,发表 论著30余篇(部)。
  • 基金资助:

    国土资源部重点项目(2000301);中国科学院地理科学与资源研究所知识创新工程领域前沿项目(CXIOG-E01-01);国土资源部2000年科技专项计划(200010303)资助

Division of land use degree in western China using factor analysis

WANG Xiu-hong1, HE Shu-jin1, ZHANG Yi-li 11, LUO Ming2   

  1. 1. Institute of Geographic Sciences and Natural Resources Research, CAS, Beijng 100101, China;
    2. Department of Urban and Environmental Sciences, Peking University, Beijing 100871, China
  • Received:2001-09-10 Revised:2001-10-22 Online:2001-12-15 Published:2001-12-15

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被引次数

126 | 24

摘要：

利用多元统计方法中的因子分析法,对我国西部地区县市级行政区的土地利用程度进行了综合评价。基于评价单元的含有结构性映射的综合得分值,以中国生态地理区域系统为宏观控制性框架,利用GIS技术对评价单元进行了归并,从而尝试了自上而下和自下而上区划方法的结合。研究结果将西部12个省、自治区和直辖市的所有县市级行政区归并成东部季风区、西北干旱区和青藏高寒区3个大区及30个小区。

关键词: 因子分析, 西部地区, 土地利用程度, 分区

Abstract:

Integrated evaluation on land use degree for each county in western China was made by using factor analysis. Based on the integrated score of each evaluated unit (county or county-level city), which reflected the structure of land use, and taken the eco-geographical system of China as a controlling framework, evaluated units were united with the GIS technique; thus, the combined division method of From-top-to-bottom (TB) and From-bottom-to-top (BT) was tested. Western China, which included 12 provinces, autonomous regions and municipality, were divided into three large regions of East monsoon region, Northwest arid region and Tibetan alpine region and further divided into 30 subregions. The various types of indices commonlyused to illuminateland use degreejust reflect the situation of land usefrom a few on the sides. Therefore, the simply using of these indicesto proceed mathematical analyses and to dodivision research would usually deviate from the right direction. Taken the eco-geographical system of China as a controlling framework, the combined division method of TB and BT can be used with hierarchical structure and suggestivedirection. Using the factor analysis, information provided by many indices can be purified and synthesized. The result of data deduction also keeps the structure of samples in high dimension, especiallythe structure related to ordering. Thus, the comparisonand union of the evaluated units have one directly referenced index rather than lots of indices. The application of GIS technique makes the orderingof integrated score closely related to the space attributes among samples, and avoid the irrational union of evaluated units which have almost the same integrated score but have very different land use structure. Also the GIS technique makes the division methods combined between that of TB and that of BT. Many attributes of the divided regions are gradually changing;therefore, the result of division is opposite. County boundary must be consideredfor maneuverability; however, some countieshave large areas, resulting in rather differentecogeographic conditions. With more detailed inquisition information about land use and perfecting study method, the division result would be more reasonable.

Key words: factor analysis, western China, land use degree, division

PACS: 

  • F301.24