地理科学 ›› 2003, Vol. 23 ›› Issue (1): 95-100.doi: 10.13249/j.cnki.sgs.2003.01.95

• 论文 • 上一篇    下一篇

GIS支持下的吉林省西部生态环境脆弱态势评价研究

黄方1, 刘湘南1, 张养贞2   

  1. 1. 东北师范大学城市与环境科学学院, 长春 130024;
    2. 中国科学院东北地理与农业生态研究所, 长春 130012
  • 收稿日期:2002-02-27 修回日期:2002-10-08 出版日期:2003-01-20 发布日期:2003-01-20
  • 基金资助:
    国家自然科学基金资助项目(49901017);中国科学院知识创新项目(KZCX1-Y-02);东北师范大学青年科学基金项目(111418)。

GIS-Based Eco-environmental Vulnerability Evaluation in West Jilin Province

HUANG Fang1, LIU Xiang-Nan1, ZHANG Yang-Zhen2   

  1. 1. College of Urban and Environmental Sciences, Northeast Normal University, Changchun, Jilin 130024;
    2. Northeast Institute of Geography and Agricultural Ecology, the Chinese Academy of Sciences, Changchun, Jilin 130012
  • Received:2002-02-27 Revised:2002-10-08 Online:2003-01-20 Published:2003-01-20

摘要: 由于自然条件的边缘性和过渡性,吉林省西部生态系统脆弱性和敏感性显著,其土地利用呈现农牧业交错的过渡特征,是全球和我国土地利用/覆被变化(LUCC)研究的典型区和首选区。基于GIS技术的空间分析功能,建立了基本评价因素的数字环境模型。应用主成分综合分析方法,提出了生态脆弱态势指数模型,获取了吉林省西部近15年生态环境脆弱性变化的空间分布规律,以期为区域生态环境的治理与建设提供依据。

Abstract: The west Jilin Province is located in the transition zone from semi-humid climate to semi-arid climate with many types of ecological landscapes and is a typical area between agriculture and husbandry. Since the 1980's, the land use/cover in this area have undergone dramatic changes. Under the pressure of population growth and excessive land exploitation, such as over grazing and over reclamation, the ecological environments that have been fragile become more vulnerable and unstable. On the basis of systematical analysis on the natural and artificial factors and their relations influencing environment evolution, the leading factors of eco-environment degradation are extracted qualitatively in this area. Under the GIS technology, digital environmental model is established. Using 100m?100m real area as basic unit, the spatial principal components analysis method is applied to calculate the eco-environment synthesis exponent according to the weight of some indexes. The eco-environment vulnerability index (EVI) is produced to evaluate the eco-environment fragile status during 1986-2000. Results show that the eco-environment quality gradually declines from the central to peripheral. The fragile status of some areas in the south sand land region, the central alluvial plain region and the north floodplain region has been exacerbated remarkably in recent 15 years.

中图分类号: 

  • S127