ZHANG Wei,WANG Jia-zhuo,REN Xi-yan,et al.GIS-based Ecological Sensitivity Analysis of Mountainous Areas[J].Research of Soil and Water Conservation,2013,20(03):44-47,54.
基于GIS的山地城市生态敏感性分析研究
- Title:
- GIS-based Ecological Sensitivity Analysis of Mountainous Areas
- 分类号:
- TU982.2
- 摘要:
- 生态敏感性分析是城市规划布局的重要依据。以典型山地城市谷城县为例，根据山地生态系统特征，选取坡度、高程、植被覆盖、地质灾害、河流水库缓冲区5个因子，将研究区划分为极敏感、高度敏感、中度敏感、轻度敏感和不敏感5个等级。利用AHP确定因子权重，结合GIS空间分析技术，得到综合生态敏感性空间分布图，5个敏感级面积比重分别为23.96%，13.56%，36.68%，17.26%，8.54%。在生态敏感性分析的基础上，对生态功能区进行了划定，并分别提出了相应的保护和发展建议，为城市规划和城市发展用地选择提供了科学依据，减小了城市发展对生态系统破坏的风险。
- Abstract:
- Ecological sensitivity analysis is frequently used in urban planning. A typical mountainous city (Gucheng county) is studied. Five factors are selected to evaluate the eco-sensitivity, including slope, elevation, vegetation cover, geologic hazards, and buffer zone of rivers. Ecological sensitivity is classified into five grades, that is extreme sensitivity, strong sensitivity, moderate sensitivity, slight sensitivity and insensitivity. The overall ecological sensitivity is evaluated and displayed on space scale by using analytic hierarchy process (AHP) and spatial analysis in Geographical Information System (GIS). The area percentages of the five grades are 23.96%, 13.56%, 36.68%, 17.26% and 8.54%, respectively. Ecological function regions are determined based on the evaluation results and advice for each region is given respectively to provide the scientific support for urban planning and land use aiming to reduce the risk of ecosystem damage.
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备注/Memo
收稿日期:2012-11-05;改回日期:2013-01-31。
基金项目:国家自然科学基金项目（41101512）
作者简介:张伟(1987-),男,河南商丘人,硕士,工程师,主要从事生态环境规划及GIS技术应用研究。E-mail:weizhang_66@163.com