| 基于电路理论的城市景观生态安全格局构建——以湖南省衡阳市为例 |
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| 引用本文： | 李涛,巩雅博,戈健宅,齐增湘,谢水波. 基于电路理论的城市景观生态安全格局构建——以湖南省衡阳市为例[J]. 应用生态学报, 2021, 32(7): 2555-2564. DOI: 10.13287/j.1001-9332.202107.020 |
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| 作者姓名： | 李涛 巩雅博 戈健宅 齐增湘 谢水波 |
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| 作者单位： | 1.南华大学建筑学院, 湖南衡阳 421000;2.中国科学院生态环境研究中心城市与区域生态国家重点实验室, 北京 100085;3.湖南省健康城市营造工程技术研究中心, 湖南衡阳 421000;4.南华大学土木工程学院, 湖南衡阳 421000 |
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| 基金项目： | 湖南省教育厅重点科研项目(18A245)、生态型区域-城市规划与管理衡阳市重点实验室项目(2018KJ113)和南华大学科研启动基金项目(2018XQD16) |
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| 摘 要： | 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 Map...
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| 关 键 词： | InVEST模型 电路理论 生态安全格局 景观连通性 |
| 收稿时间： | 2021-01-06 |
Construction of urban landscape ecological security pattern based on circuit theory: A case study of Hengyang City,Hunan Province,China |
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| LI Tao,GONG Ya-bo,GE Jian-zhai,QI Zeng-xiang,XIE Shui-bo. Construction of urban landscape ecological security pattern based on circuit theory: A case study of Hengyang City,Hunan Province,China[J]. The journal of applied ecology, 2021, 32(7): 2555-2564. DOI: 10.13287/j.1001-9332.202107.020 |
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| Authors: | LI Tao GONG Ya-bo GE Jian-zhai QI Zeng-xiang XIE Shui-bo |
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| Affiliation: | 1.School of Architecture, University of South China, Hengyang 421000, Hunan, China;2.State Key Laboratory of Urban and Regional Ecology, Research Center for Eco-Environmental Sciences of Chinese Academy of Sciences, Beijing 100085, China;3.Hunan Healthy City Construction Engineering Technology Research Center, Hengyang 421000, Hunan, China;4.School of Civil Engineering, University of South China, Hengyang 421000, Hunan, China |
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| Abstract: | 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 module of InVEST and Circuitscape 4.0 and evaluated the importance and connectivity of relevant ecological elements with the Linkage Mapper, with the aim to construct the ecological security pattern and delimitate the regions prior to ecological restoration. The results showed that there were 85 ecological sources dominated by woodland and grassland, together with a small number of ponds and beaches, which mainly distributed in the southwest of Zhengxiang District, the west of Yanfeng District, the northeast and south central of Zhuhui District, with a total area of 11.8 km2. There were 60 ecological sources with centrality greater than 100, accounting for 70.6% of the total. There were 217 ecological corridors and five potential ecological corridors mainly composed of forest land, among which the proportion of shrubbery and sparse forest land was higher. The corridors with higher importance were mainly distributed in the west of the studied area. After removing the barriers, the regional connectivity had been significantly improved, with the highest extent of 54.9%. The priority areas of ecological restoration were classified into three levels according to the value of cumulative current, namely, the high-grade area, the middle-grade area and the low-grade area. The high-grade area covered 4.3 km2 of barriers, mainly distributed in the southwest of Zhengxiang District, northeast and south central of Zhuhui District. The middle-grade area was dominated by pinch area and ecological source area with centrality less than 100, covering an area of about 12.9 km2, mainly distributed in the central part of Zhengxiang District, northeast and south central of Zhuhui District. The low-level area was mainly distributed in south central of Zhuhui District, with 51.8 km2 of residual ecological sources. By coupling InVEST habitat quality analysis module and circuit theory, the ecological security pattern for biological protection was constructed, which provides scientific reference for biological protection. |
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| Keywords: | InVEST model circuit theory ecological security pattern landscape connectivity |
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