期刊论文

Construction of urban landscape ecological security pattern based on circuit theory: A case study of Hengyang City,Hunan Province,China

Xie, S.-B.

中文

应用生态学报

1001-9332

2021

32

7

2555-2564

10.13287/j.1001-9332.202107.020

This work was supported by the Key Scientific Research Project of Education Department of Hunan Province (18A245), the Project of Hengyang Key Laboratory of the Ecological Region Urban Planning and Management (2018KJ113), and the Research Start Fund of University of South China (2018XQD16).

本校为第一机构

生态源地与廊道识别是生态安全格局构建的重要环节,以往研究较多关注物种迁移和扩散最优路径的选择,忽略了物种对路径选择的随机性,致使其结论未能客观地反映物种迁移和扩散过程。以衡阳市主城区为研究对象,利用InVEST模型生境质量分析模块结合Circuitscape 4.0筛选生态源地、生态廊道,继而通过Linkage Mapper评估相关生态要素重要性及连通性,构建生态安全格局并划定生态修复优先区域。结果表明:研究区生态源地共有85处,以林地和草地为主,少量为坑塘和滩地,主要分布在蒸湘区西南部、雁峰区西部、珠晖区东北部和中南部,总面积为11.8 km~2,其中,中心度大于100的生态源地有60处,占比70.6%。生态廊道...

The identification of ecological sources and corridors plays an important role in the construction of ecological security pattern. However, previous studies mainly concentrated on the optimal path selection of species migration and diffusion rather than the random path selection of the species, which makes most conclusions fail to objectively reveal the process of species migration and diffusion. Taking the downtown area of Hengyang City as an example, we selected the ecological sources and ecological corridors with the habitat quality analysis...