流域景观研究

北京野鸭湖湿地资源变化特征

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  • 1. 三维信息获取与应用教育部重点实验室,首都师范大学资源环境与旅游学院,北京 100037;
    2. 资源环境与地理信息系统北京重点实验室,北京 100037
王颖, 女 (1981-), 北京, 硕士, 主要从事基于3S的湿地资源动态监测及生态恢复等研究。E-mail: star.wy@163.com

收稿日期: 2005-01-20

  修回日期: 2005-05-06

  网络出版日期: 2005-07-25

基金资助

国家自然科学基金 (70073045, 400471090); 北京市自然科学基金 (222126); 北京市教委 (222146)

The Change of Yeyahu Wetland Resources in Beijing

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  • 1. Key Lab of 3D Information Acquisition and Application, MOE, School of Resource and Environmental Science, Capital Normal University, Beijing 100037, China;
    2. Key Lab of Resources Environment and GIS, Beijing City, Beijing 100037, China

Received date: 2005-01-20

  Revised date: 2005-05-06

  Online published: 2005-07-25

Supported by

National Natural Science of China, No.70073045, 40471090; Biejing Natural Science, No. 222126; Beijing Municipal Education Commision, No. 222146

摘要

湿地是自然界的生态系统和景观类型,具有巨大的资源潜力和环境功能。长期以来,由于人类活动影响造成的湿地景观巨大变化,不仅仅改变了湿地景观原有的功能,而且对湿地环境产生重要影响。基于RS、GIS技术,通过对北京野鸭湖湿地的Landsat-TM影像和印度IRS影像进行融合处理,得到分辨率高的多光谱图像。结合实地调查,建立解译标志,运用ArcGIS9.0进行矢量化、空间分析和数据统计功能,并统计植被覆盖变化,分析研究1998~2004年野鸭湖湿地资源变化特征。在上述技术路线和研究方法的基础上,总结出该区域的湿地变化特征,最后应用累积效应的原理和方法,对深入研究的科学问题进行了展望,提出一些需要深入探讨的问题。

本文引用格式

王颖, 宫辉力, 赵文吉, 李小娟, 张志峰, 赵微 . 北京野鸭湖湿地资源变化特征[J]. 地理学报, 2005 , 60(4) : 656 -664 . DOI: 10.11821/xb200504014

Abstract

Wetland, considered as a natural ecosystem and landscape style, has great resource potentiality and environmental function. For a long time, the change of wetland landscape pattern posed by human activity has not only changed the existing wetland function, but also exerted influence on wetland environment. This paper focuses on the fusion of Landsat-TM image with IRS image in Yeyahu wetland for getting color images with higher resolution. Combined with on-the-spot investigation, we set up interpretable symbols, carry out image vectorization, spatial analysis and data statistics using ArcGIS 9.0, and then analyze and research vegetation cover changes and changing characters of Yeyahu wetland resources during the period 1998-2004. The result shows that the decrease of water area leads to the reduction of vegetation and species, non-point pollution in agriculture, and water resource scarcity. On the basis of the above-mentioned technological trajectory and research approaches, we identify the changing characters of wetlands, utilize the principle and method of accumulating effect to propose restoration measures. For the protection of environment, it is necessary to return lands to nature, get back the swamps, and utilize and exploit wetland resources with rationality.

Key words: Beijing; Yeyahu; wetland; NDVI; RS

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