| 摘要: |
| 以四川省万源市为例，利用景
观生态学理论和GIS空间分析技术，探索
山地城市生态廊道构建的理性方法。分
析发现，林地是万源市生态用地中最主
要的景观类型，其平均斑块面积、平均形
状指数、空间聚集度都较大，有较高的空
间异质性。根据不同的用地类型对景观
基质的能量流、信息流和物质流产生的障
碍作用，计算各类建设用地对生态用地的
生态障碍效应，并得到景观的潜在生态
连接度。以平均破碎度小于0.4和聚集度
大于80%的阈值提取林地景观斑块，依
据障碍效应指数和生态连接度的空间分
布，并考虑高程、坡度、现状用地类型等
因素，搜索廊道的适宜建设区，构建生态
廊道，最终形成规划区生态网络。 |
| 关键词: 景观指数 障碍效应 生态连
接度 生态廊道 GIS 万源市 |
| DOI： |
| 分类号: |
| 基金项目:国家自然科学基金资助项目（41001364）；
教育部博士点基金资助项目
（20 090191120 030） |
|
| Constructing Urban Ecological Corridor Based on GIS— A Case Study of Wanyuan City, Sichuan Province |
|
HAN Guifeng
|
| Abstract: |
| Taking Wany uan city for example, this paper explores the method of
constr ucting ecological cor ridor in ecological land in mountain city employing
landscape ecology principle and spatial analysis in Geographic Information System
(GIS). Results show that woodland is the most important landscape type, and its Mean
Patch Area (MPA), Mean Shape Index (MSI), and Aggregation Index (AI) are all
higher and are spatially more heterogenous than other landscape types. Barrier effect
of ecological land affected from constructive land and potential ecological connectivity
of ecological land are calculated based on barrier effects of different land-use types
to energy flow, information flow and matter flow of landscape matrix. The patches of
woodland are extracted with a Mean Fragmentation Index (MFI) less than 0.4 and an
AI more than 80%. Taking these patches as seed patches, suitable area of ecological
corridors for construction are identified considering spatial distribution pattern and
other factors such as elevation, slope and land-use status, etc. The rational ecological
corridors are planned. |
| Key words: Landscape Matrix Barrier Effect Ecological Connectivity Ecological
Corridor ?GIS ?Wanyuan?City |
