地理科学 ›› 2001, Vol. 21 ›› Issue (5): 452-456.doi: 10.13249/j.cnki.sgs.2001.05.452

• 论文 • 上一篇    下一篇

基于卫星遥感信息的吉林省西部草地退化分析

刘志明1,2, 晏明2, 王贵卿3, 孟华3, 张文哲2, 王春晖3   

  1. 1. 中国科学院长春地理研究所, 吉林 长春 130021;
    2. 吉林省气象科学研究所, 吉林 长春 130062;
    3. 吉林省草原管理总站, 吉林 长春 130062
  • 收稿日期:2000-09-20 修回日期:2001-01-27 出版日期:2001-09-20 发布日期:2001-09-20
  • 基金资助:
    吉林省科技发展计划项目资助(990300-03)

Analysis on Grassland Degeneration in the West Jilin Province Based on Satellite RS

LIU Zhi-ming1,2, YAN Ming2, WANG Gui-qing3, MENG Hua3, ZHANG Wen-zhe2, WANG Chun-hui3   

  1. 1. Changchun Institute of Geography, Chinese Academy of Sciences, Changchun, Jilin 130021;
    2. Meteorological Science Institute of Jilin Province, Changchun, Jilin 130062;
    3. Prairie Management General Station of Jilin Province, Changchun, Jilin 130062
  • Received:2000-09-20 Revised:2001-01-27 Online:2001-09-20 Published:2001-09-20

摘要: 利用1996年和1986年秋季陆地卫星TM数据,将计算机监督分类与非监督分类识别方法结合应用进行草地的解译,改进算法,改善遥感图像的识别精度。试验研究结果表明:吉林省西部草原生态环境在恶化,草地面积平均每年减少4.5×104hm2,草地退化严重,退化草地面积已占草地总面积的81.1%,而且退化程度也在加重,中、重度退化草地比例明显提高,草地退化呈发展的趋势。

Abstract: Grasslands had been revised with the method combined supervised and non-supervised classifications using Landsat data in autumn of 1996 and 1986. The advanced algorithm was used to improve the accuracy. The result shows that first, the grassland environment in the West Jilin is worsening and the area is decreasing by an average of 4.5?104 hectares a year; second, the grassland degeneration is sharpening and the degeneration area is 81.1% of the total. The degeneration becomes heavier, and the middle and heavy degenerated grasslands are developing in higher proportion.

中图分类号: 

  • X87