基于GIS六安城市景观格局优化研究

Optimization of City Landscape Pattern Based on GIS in Lu'an City

景观格局与生态过程是景观生态学研究的重要内容,基于生态功能和过程影响的景观格局优化是提高景观效益和稳定性重要方法之一。选择六安城市区域为研究对象,应用GIS技术,对2003年城市景观格局进行定量分析,并采用阻力面模型研究景观格局优化途径。结果显示:以累积耗费距离面、生态源地、耗费路径为依据,构建源地、生态廊道的景观组分优化景观格局。加强保护核心斑块源地、提高景观连通度是实现景观格局优化的关键。该研究结果为城市土地利用和生态环境保护提供科学的依据。

Landscape pattern and ecological processes is the key topic of landscape ecology. Landscape pattern optimization based on ecological function and process is one of the key methods to improve landscape efficiency and stability. With GIS technology, the paper makes a quantitative analysis of Lu＇an City landscape pattern, and the re- sistance model is employed to optimize landscape pattern. Based on an accumulative cost distance model, ecological sources and cost path,the optimization of landscape pattern of ecological sources and corridors is established. Strengthening the protection of core sources and improvement of landscape connection is the key to the optimization of city landscape. The research provides scientific basis to utilization of urban land and ecological protection.