地理科学进展 ›› 2005, Vol. 24 ›› Issue (6): 42-49.doi: 10.11820/dlkxjz.2005.06.005

• 生态环境 • 上一篇    下一篇

基于RS、GIS技术的扎龙沼泽湿地 景观格局变化分析

韩 敏1, 孙燕楠1, 许士国2, 唐晓亮1   

  1. 大连理工大学电子与信息工程学院,大连 116024|2. 大连理工大学土木水利学院,大连 116024
  • 收稿日期:2005-08-01 修回日期:2005-10-01 出版日期:2005-11-25 发布日期:2005-11-25
  • 作者简介:韩敏(1959- ), 女, 工学博士, 教授, 主要从事3S系统,神经网络及混沌序列分析等研究。共发表论文60余篇,其中被SCI、EI、ISTP检索论文23篇次。
  • 基金资助:

    国家自然科学基金重点资助项目(50139020)。

Study on Changes of Marsh Landscape Pattern in Zhalong Wetland Assisted by RS and GIS

HAN Min1, SUN Yannan1, XU Shiguo2, TANG Xiaoliang1   

  1. 1. School of Electronic and Information Engineering, Dalian University of Technology, Dalian 116023, China
    2. School of Civil and Hydraulic Engineering, Dalian University of Technology, Dalian 116023, China
  • Received:2005-08-01 Revised:2005-10-01 Online:2005-11-25 Published:2005-11-25

摘要:

本文以1986年、1999年、2002年的扎龙区域Landsat TM影像为数据源,利用RS、GIS技术分析了扎龙地区沼泽湿地16年的空间格局变化。选取景观破碎化指数、分形维数、分布质心等景观指数进行计算分析,同时研究了不同地区中沼泽湿地面积相对于总的沼泽湿地面积的变化情况。结果表明扎龙区域沼泽湿地的破碎化程度在加深,斑块形状变化不大,其质心位置向西北偏移,西北部的沼泽湿地不如东南部稳定,受到的人为影响更大。

关键词: GIS, RS, 景观指数, 空间格局, 沼泽湿地

Abstract:

A wetland is a structural and functional unit of a landscape consisting of various environments and sustaining a certain biodiversity. Conservation of wetlands is important at both the regional and the national level. The paper elucidated the changes in marsh spatial pattern during a period of about 16 years after 1986 in the Zhalong wetland. Three Landsat TM remote sensing images in 1986, 1999 and 2002 were used to analyze the evolution of Zhalong marsh pattern assisted by GIS and RS technology. The landscape indices such as fragment index, fractal dimension, distribution centroid points, etc were calculated and analyzed. At the same time the paper studied the changes of marsh area in each district relative to the changes of the whole marsh area. The results show that the fragmentation of wetland patches is increasing, the shape of marsh patches changes little, the distribution centroid points of marsh wetland has moved towards northwest and that marsh in Zhalong northwest is less stable and affected more by human actions than that in Zhalong southeast.

Key words: GIS, landscape indices, marsh, RS, spatial pattern