收藏设为首页 广告服务联系我们在线留言

干旱区地理 ›› 2013, Vol. 36 ›› Issue (6): 1049-1057.

• 生态与环境演变 • 上一篇    下一篇

永定河流域门头沟区景观生态安全格局评价

张玉虎1,李义禄1,贾海峰2   

  1. (1    首都师范大学资源环境与旅游学院, 北京    100048;    2    清华大学环境学院, 北京    100084)
  • 收稿日期:2013-01-09 修回日期:2013-04-10 出版日期:2013-11-25
  • 通讯作者: 贾海峰,副教授,博士生导师,主要从事环境系统分析、环境规划与管理及3S技术在环境科学中的应用. Email:jhf@tsinghua.edu.cn
  • 作者简介:张玉虎(1975-),男,江苏徐州人,博士(后),讲师,主要从事水资源、水环境与生态修复研究. Email:zhang_yuhu@163.com
  • 基金资助:

    国家科技支撑计划项目课题(2012BAC19B03-005)(2013BAC10B01);国家重大水专项(2011ZX07301-003)

Constructing landscape ecological security pattern in Yongding River Watershed:A case of Mengtougou Basin,Beijing

ZHANG  Yu-hu1,LI Yi-lu1,JIA  Hai-feng2   

  1. (1   College of Resources Environment and Tourism, Capital Normal University, Beijing  100048, China2   School of Environment, Tsinghua University, Beijing  100084, China)
  • Received:2013-01-09 Revised:2013-04-10 Online:2013-11-25

摘要: 生物多样性安全是流域生态安全主体之一,也是近年研究的热点。以永定河流域门头沟区为研究区,基于景观生态安全格局理论与最小费用距离模型方法,利用RS与GIS空间分析技术研究构建了研究区1984-2010年4个时段景观生态安全格局。根据最小费用阻力阈值,建立了“源”间生态廊道及“源”与外部联系的辐射道,确定了关键的战略点,最终完成景观安全格局的构建。基于生物多样性目标得到了低、中、高3 个不同安全水平的面积分别占研究区总面积的比例。结果表明:研究区低安全区面积比例由1984年的9.49%下降为2010年的9.18%,说明处于人类强干扰区的东部区域生态安全状态2010年较1984年有好转趋势。研究结果可为研究区生态安全策略及开展景观尺度生态恢复的治理提供参考。

关键词: 最小费用距离模型, 景观生态安全格局, GIS, 门头沟

Abstract: Biodiversity security is one of the main watershed ecological security and study hotspots in the recent years. Based on the ecological security landscape theory and remote sensing and GIS spatial analysis techniques,this paper put out the four periods of ecological security landscape of area in the Yongding River watershed from 1984 to 2010 at the regional level. By defining the value of the pixel resistance (expense),the paper graded the ecological security level,analyzed and compared this area ecological security situation in the different periods and the spatial-temporal changes. The results indicated that the constructed regional-scale ecological security landscape can express the state of the regional-scale ecological security pattern;the proportion of low-security area in Mentougou Basin,Beijing,decreased from 9.49% in 1984 to 9.18% in 2010,the ecological safety state of the western mountains of the study area is better than that of the eastern plain. According to the results, areas of low ecological security should be given priority for the protection and ecological restoration.

Key words: effective cost distance model, landscape ecological security pattern, GIS, the Mentougou basin

中图分类号: 

  • P901