基于生态网络格局的城市生态保护红线优化研究——以青岛市为例

Research on the optimization of urban ecological redline based on ecological network pattern: taking Qingdao as an example

生态保护红线是对维护生态安全、保障生态系统服务具有重要战略意义的空间区域。现有生态保护红线划定技术方法未考虑空间连通性,划定结果存在斑块破碎、空间连通性差的问题,降低了生态保护红线的生态功能。本文以青岛市为例,将形态学空间格局分析方法(MSPA)和最小路径法等生态网络构建方法引入到生态保护红线优化中,通过构建生态廊道和踏脚石连接破碎生境,使之形成完整的景观和生物栖息地网络,优化生态保护红线格局。研究结果表明:基于MSPA方法和最小路径法构建并优化的生态网络可作为生态保护红线的组成部分,提高生态保护红线区的连通性和生态系统服务功能。研究结果可为生态保护红线的优化提供重要的参考和依据,对环境保护和管理具有一定借鉴意义。

Ecological redline refers to the boundary line of the key ecological protection area that has important strategic significance for ecological security and sustainable development. It also is an inevitable choice to achieve national or regional ecological security.Traditional redline method is failed to consider the spatial connectivity,which may result patch fragmentation,and reduce the ecological functions. In this study,the relatively ecological network based methods,including morphological spatial pattern analysis method( MSPA) and shortest path method,were used to optimize it. By constructing ecological corridors and stepping stones to connect the broken habitat and building a completely landscape networks,we will make the ecological redline delineated more scientific and effective. Results showed that the MSPA method and shortest path method based ecological network construction methods can be used for the redline optimization by viewing the ecological network area as the buffer zones. The optimization of ecological redline improves its connectivity and ecological service functions. The results provide references for ecological redline optimization and guide for the development and management of ecological conservation.