地理科学

地理科学 ›› 2002, Vol. 22 ›› Issue (5): 527-534.doi: 10.13249/j.cnki.sgs.2002.05.527

• 论文 • 上一篇    下一篇

近10年来黑河流域生态环境变化特征分析

王根绪1,2, 王建1, 仵彦卿1   

  1. 1. 中国科学院寒区旱区环境与工程研究所冻土工程国家重点实验室 甘肃 兰州 730000;
    2. 兰州大学资源环境学院 甘肃 兰州 730000
  • 收稿日期:2001-08-06 修回日期:2001-11-28 出版日期:2002-09-20 发布日期:2002-09-20
  • 基金资助:
    中国科学院知识创新重大项目(KZCX1-09);中国科学院知识创新重大项目(KZCX1-10-06)。

Features of Eco-Environmental Changes in Heihe River Basin over Recent 10 Years

WANG Gen-xu1,2, WANG Jian1, WU Yan-qing1   

  1. 1. State Key Laboratory of Frozen Soil Engineering, Cold and Arid Regions Environment and Engineering Research Institute, the Chinese Academy of Sciences, Lanzhou, Gansu 730000;
    2. School of Resources and Environmental Sciences, Lanzhou University, Lanzhou, Gansu 730000
  • Received:2001-08-06 Revised:2001-11-28 Online:2002-09-20 Published:2002-09-20

PDF (PC)

赞

被引次数

82 | 43

摘要： 对比分析黑河流域13万km2范围内2000年遥感影像数据资料及1987年流域遥感影像资料,结果表明:近10年来黑河流域生态环境总体上仍然向恶化方向发展,流域内天然森林分布面积减少6.35%,中游取代下游成为流域沙漠化发展的主导区域,上游山区土地沙漠化发展最为迅速;下游草地生态退化十分强烈,草地面积减少达2095.39km2。但局部或生态环境的某些方面出现明显逆转。

Abstract: Selecting the 13 items of land use or land cover index, which indict the changes of regional eco-environment, from the remote sensing data of 2000 over the whole river basin with an area of 13.0?104km2. At the same time, the remote sensing data from 1987 was analyzed to output the eco-environmental index of 1987. Comparing with the two time phase analysis results of eco-environmental index, and integrating the field surveying results, the trends and extent of eco-environmental changes in the Heihe River basin were analyzed. The features of eco-environmental changes were quantitatively discussed. Those features showed that, in recent 10 years, the eco-environment of the Heihe River basin was degrading as a whole. Forest area in the river basin decreased by 6.35%. The middle reaches, which replaced the lower reach, was the most serious desertification region, and the upper reaches was the rapidly exacerbated desertification region. Grassland ecology showed a continuous degradation tendency in the lower reaches, the total area of degraded grassland occupied 2095.39km2. But in some regions of the river basin, the eco-environment was improved.

中图分类号: 

  • X171