地理科学 ›› 1995, Vol. 15 ›› Issue (1): 24-29,99.doi: 10.13249/j.cnki.sgs.1995.01.24

• 论文 • 上一篇    下一篇

沙漠化危险度评价模型初探

董玉祥   

  1. 中国科学院兰州沙漠研究所, 兰州730000
  • 收稿日期:1993-07-01 出版日期:1995-01-20 发布日期:1995-01-20
  • 基金资助:
    国家“八五”攻关项目(85-724-01-08)阶段性成果

STUDY ON THE ASSESSMENT MODEL FOR HAZARD DEGREE OF SANDY DESERTIFICATION

Dong Yuxiang   

  1. Institute of Desert Research, Academia Sinica, Lanzhou 730000
  • Received:1993-07-01 Online:1995-01-20 Published:1995-01-20

摘要: 分析了国内外的研究现状,制定出沙漠化危险度评价因子体系及其分级标准,建立了综合评价模型,并以内蒙古奈曼旗为例进行了应用与验证.

Abstract: Sandy desertification is one of the most important problems in the world.The hazard degree assessment is an important and basic study subject of sandy desertification issues.This paper first analyses the conditions of study on the assessment hazard degree of sandy desertification at home and abroad,establishes the criteria system of hazard degree assessment and gives the classification standards (class limits) of every assessment criterion.The assessment model for hazard degree of sandy desertification is given the first time: where:SDH:index number of hazard degree; Wi:weighting number;Fi:degree index number.This paper gives one simple but very useful method to assess the hazard degree of sandy desertification.At last,Naiman county in Inner Mongolia is taken as an example to examine the assessment model, it has been proved that the assessment model or method is very favourable to assess the hazard degree of sandy desertification.