地球信息科学学报 ›› 2013, Vol. 15 ›› Issue (4): 554-559.doi: 10.3724/SP.J.1047.2013.00554

• 地理空间分析综合应用 • 上一篇    下一篇

基于加权Voronoi图的北京市湿地功能分区研究

苗李莉1,2, 蒋卫国3, 万圆1,2, 何湜1,3, 陈云浩1,2   

  1. 1. 北京师范大学地表过程与资源生态国家重点实验室, 北京 100875;
    2. 北京师范大学资源学院, 北京 100875;
    3. 北京师范大学环境演变与自然灾害教育部重点实验室, 北京 100875
  • 收稿日期:2013-01-21 修回日期:2013-04-26 出版日期:2013-08-08 发布日期:2013-08-08
  • 通讯作者: 蒋卫国(1976- ),男,博士,副教授,研究方向为资源环境遥感。E-mail:jiangweiguo@bnu.edu.cn E-mail:jiangweiguo@bnu.edu.cn
  • 作者简介:苗李莉(1977- ),女,博士生,研究方向为湿地生态环境遥感与地理信息。E-mail:miaolili@mail.bnu.edu.cn
  • 基金资助:

    林业公益性行业科研专项(201204201);国家科技支撑计划课题(2012BAH32B03);北京市科技计划项目(D08040600580801)。

Beijing Urban Wetland Function Zoning Based on the Weighted Voronoi Diagram

MIAO Lili1,2, JIANG Weiguo3, WAN Yuan1,2, HE Shi1,3, CHEN Yunhao1,2   

  1. 1. State Key Laboratory of Earth Processes and Resource Ecology, Beijing Normal University, Beijing 100875, China;
    2. College of Resources, Beijing Normal University, Beijing 100875, China;
    3. Key Laboratory of Environmental Change and Natural Disaster, Beijing Normal University, Beijing 100875, China
  • Received:2013-01-21 Revised:2013-04-26 Online:2013-08-08 Published:2013-08-08

摘要:

湿地功能分区是城市湿地生态系统健康恢复、管理改善,以及资源可持续利用的重要前提。本文以北京湿地为例,利用客观赋权的主成分分析法对湿地生态服务功能进行综合评价;并结合空间分析中的Voronoi图空间分区方法,通过利用牛顿-断裂点模型确定属性权重的主要步骤,构建基于加权Voronoi图的城市湿地功能分区模型,开展“自下而上”定量化的北京湿地功能分区研究。结果表明:(1)北京湿地功能综合评价中,密云水库湿地的功能综合值最大,表明该湿地生态服务功能作用最重要。(2)北京湿地功能分区分为三级框架,其中包括4个一级核心湿地功能区、15个二级核心湿地功能区、43个三级核心湿地单元。(3)湿地资源功能价值量与湿地斑块空间关系的相结合,实现了属性和空间双重距离约束的湿地功能分区,促进了湿地生态系统服务价值评估在决策管理中的深入应用,为城市湿地功能区划提供技术支持。

关键词: Voronoi图, 北京, 功能价值, 湿地, 功能分区

Abstract:

It was an important precondition for wetland ecosystem health recovery, management improvements, and the sustainable use of resources to carry out an accurate and reasonable urban wetland function zoning. Taking Beijing wetlands as an example, according to the result of the wetlands ecological service functional value evaluation, the method of principal component analysis was used in comprehensive evaluation of urban wetland ecological service functions. Then the space partitioning method of weighted Voronoi diagram was applied, through the main steps of the attribute weights being determined by using Newton-Breaking point model, to build urban wetlands function zoning model based on weighted Voronoi diagram. Based on the method, the typical wetlands patches were selected in the research of a "bottom-up" quantitative Beijing wetland function zoning. The results showed that: firstly, the wetland ecosystem service function of north wetland groups was very important, especially the Miyun Reservoir wetlands comprehensive value indicating the most important role of the wetland ecosystem services in Beijing. Secondly, Beijing wetland function zoning showed a three hierarchical framework, which included 4 wetland functional zones for the first level, 15 wetland functional zones for the second level, and 43 wetland functional important units for the third level in the homogeneous plane space. At last, the function magnitude of value on wetland resources was combined with the spatial relationship in wetland patches, in order to implement wetland function zoning by a double distance constraint on both attribute and space. This research not only promoted the in-depth application on value assessment of wetland ecosystem services in the decision-making management, but also provided technical supports to the urban wetland function zoning, and met the needs of urban wetlands management as well.

Key words: function value, Voronoi diagram, Beijing wetland, function zoning