基于“重要性—敏感性—连通性”框架的云浮市生态安全格局构建

发布时间：2018-03-20 03:34

本文选题：生态安全格局　切入点：源地识别　出处：《地理研究》2017年03期 　论文类型：期刊论文

【摘要】：生态安全格局构建是保障城市生态安全,实现城市可持续性发展的重要途径,也是景观生态学研究的热点领域之一。生态源地识别与空间阻力面构建一直是生态安全格局构建中的技术难点。以广东省云浮市为例,从生态系统服务重要性、生态敏感性与景观连通性三个方面识别生态源地,利用DMSP/OLS夜间灯光数据修正基本生态阻力面,并运用最小累积阻力模型判定生态廊道,从而综合构建云浮市生态安全格局。研究表明:云浮市生态源地占全市总面积的36.47%,主要分布在西部与南部的山林地。云浮市生态廊道总长度为508.87 km,其中景观廊道总长度为315.58 km,组团廊道总长度为193.29 km,呈环状辐射分布于植被覆盖相对较好的山区地带。全市16个自然保护区基本都位于生态源地范围内。构建的"重要性—敏感性—连通性"框架可以为区域生态安全格局构建提供新思路,从而有效指引相关空间规划。
[Abstract]:The construction of ecological security pattern is an important way to guarantee the urban ecological security and realize the sustainable development of the city. It is also one of the hot research fields of landscape ecology. The identification of ecological source and the construction of space resistance surface are always the technical difficulties in the construction of ecological security pattern. Taking Yunfu City, Guangdong Province as an example, the importance of ecosystem service is considered. Three aspects of ecological sensitivity and landscape connectivity were used to identify ecological sources, and the basic ecological resistance surface was corrected by DMSP/OLS night light data, and the ecological corridor was determined by minimum cumulative resistance model. The study shows that the ecological source of Yunfu city accounts for 36.47% of the total area of the city, mainly distributed in the mountains and forests in the west and south of the city. The total length of the ecological corridor in Yunfu city is 508.87 km, of which the landscape corridor is located. The total length is 315.58 km and the total length of the organized corridor is 193.29 km, which is distributed in the mountainous areas with relatively good vegetation coverage. The 16 nature reserves in the whole city are basically located in the ecological source areas. The "connectedness" framework can provide new ideas for the construction of regional ecological security pattern. In order to effectively guide the relevant spatial planning.
【作者单位】：北京大学深圳研究生院城市规划与设计学院城市人居环境科学与技术重点实验室;北京大学城市与环境学院地表过程分析与模拟教育部重点实验室;
【基金】：国家自然科学基金项目(41271195)
【分类号】：X321;TU984

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