地理研究 ›› 2011, Vol. 30 ›› Issue (7): 1227-1236.doi: 10.11821/yj2011070008

• 环境与生态 • 上一篇    下一篇

区域景观格局变化及生态修复--以北京门头沟区为例

吴国玺1, 喻铮铮1, 刘良云2   

  1. 1. 许昌学院 城市与环境学院,河南许昌 461000;
    2. 中国科学院对地观测与数字地球科学中心,北京 100190
  • 收稿日期:2010-09-09 修回日期:2011-04-08 出版日期:2011-07-20 发布日期:2011-07-20
  • 作者简介:吴国玺(1966-),男,河南省汝南县人,硕士,教授,主要从事土地利用及生态修复研究。 E-mail:wgx1217@126.com; 喻铮铮(1982-),男,河南省信阳人,硕士,讲师,从事3S技术教学及应用研究。 E-mail: ideeyu@sina.com
  • 基金资助:

    北京市自然科学基金资助项目(4071002);河南省科技厅科技攻关项目(112102310537);许昌学院科研基金项目(2011B040)

Research on landscape pattern change and regional ecological restoration: A case study of Mentougou District, Beijing

WU Guo-xi1, YU Zheng-zheng1, LIU Liang-yun2   

  1. 1. College of Urban and Environment, Xuchang University, Xuchang 461000, Henan, China;
    2. Center for Earth Observation and Digital Earth, CAS, Beijing 100190, China
  • Received:2010-09-09 Revised:2011-04-08 Online:2011-07-20 Published:2011-07-20

摘要: 以1979年和2005年的Landsat TM影像为数据源,在对其进行几何订正、大气和地形辐射校正的基础上,采用归一化植被指数和改进的像元二分模型,对北京市门头沟区的植被覆盖进行了动态遥感监测,结果表明该区植被覆盖总体上呈下降趋势。在此基础上结合研究区边界矢量文件和DEM数据,利用GIS技术和生态景观指标分析方法,定量分析了该区景观面积变化、景观边缘特征和形状特征,对其植被变化进行了景观生态学评价。针对该区植被覆盖变化的时空特点,进行了生态修复区划研究,将全区划分为生态脆弱区、生态控制区、生态协调区、生态稳定区。针对各区划的特点,分别提出了生态修复合理化建议。

关键词: 遥感, 植被覆盖, 生态修复, 景观特征

Abstract: In this paper, we chose two TM images of 1979 and 2005 as data source, based on normalized difference vegetation index and improved pixel binary model. After geometry revision, atmospheric correction and terrain revision with the aid of remote sensing technology, we calculated the vegetation coverage of Mentougou District, and dynamically monitored the vegetation cover changes of this district. The result shows that the vegetation coverage has a downward trend. Then we analyzed the temporal and spatial changes of the vegetation coverage based on the basic geographic information data and DEM data of this district, and studied the landscape ecology characteristics of the changes using GIS technology and ecological landscape indicators by dividing the area into four parts as ecological fragile areas, ecological control area, ecological coordination area and ecological stability area, and based on the characteristics for each division we proposed some suggestions for the ecological restoration, which can provide decision support for the local government to carry out some ecological restoration Projects.

Key words: remote sensing, vegetation coverage, ecological restoration, landscape characteristics