QIN Zibo,XUAN Jin,HUANG Liujing,et al.Ecological Network Construction of Sea-Island City Based on MSPA and MCR Model[J].Research of Soil and Water Conservation,2023,30(02):303-311.[doi:10.13869/j.cnki.rswc.2023.02.052]
基于MSPA和MCR模型的海岛型城市生态网络构建——以福建省平潭岛为例
- Title:
- Ecological Network Construction of Sea-Island City Based on MSPA and MCR Model
- 文章编号:
- 1005-3409(2023)02-0303-09
- 关键词:
- 生态网络; 生态源地; 形态学空间格局分析(MSPA); 最小累积阻力模型(MCR); 平潭岛
- Keywords:
- ecological network; ecological source; morphological spatial pattern analysis; minimum cumulative resistance model; Pingtan Island
- 分类号:
- X171.4
- 文献标志码:
- A
- 摘要:
- 为解决快速发展导致的生态环境问题,探究平衡海岛型城市发展与生态保护的有效途径,以福建省平潭岛为研究区,采用形态学空间格局分析模型(MSPA)、最小累积阻力模型(MCR)和重力模型构建平潭岛生态网络,通过构建踏脚石斑块对生态网络进行优化。结果表明:(1)初步构建的生态网络包括20个重要生态源地和190条生态廊道,重要生态源地主要分布在西部和东北部,生态廊道在中部和南部地区分布较少。(2)阻力较大的地区主要分布在平潭县城及研究区南部和中部。这些地区几乎都是建成区,很大程度上阻碍了生态系统的流动,导致研究区生态网络体系不完整。(3)增加了8个踏脚石斑块作为补充重要生态源地,同时也新增加188条生态廊道,以实现生态网络的优化。(4)优化后的生态网络连通性提高,网络闭合指数(α指数)、网络连接度指数(β指数)和网络连通率指数(γ指数)分别增加了1.99,4,1.33。研究能够阐明构建踏脚石在海岛型城市生态网络完善中的实践路径,并为平潭岛未来生态规划及城市健康发展提供有效的理论支撑,同时也为其他海岛型城市的生态保护和优化提供参考。
- Abstract:
- In order to solve the ecological environment problems caused by the rapid development, an effective way to balance the development of sea-island city and ecological protection was explored. Taking Pingtan Island in Fujian Province as the study area, we used morphological spatial pattern analysis model(MSPA), minimum cumulative resistance model(MCR)and gravity model to construct the ecological network of Pingtan Island, and the ecological network was optimized by constructing stepping stone patches. The results showed that:(1)the ecological network consisted of 20 important ecological sources and 190 ecological corridors; the important ecological sources mainly distributed in the west and northeast, while the ecological corridors less distributed in the central and southern regions;(2)the areas with greater resistance mainly distributed in Pingtan County and the southern and central part of the research area; these areas were almost all built-up areas, which hindered the flow of ecosystem to a large extent, leading to the incomplete ecological network system in the study area;(3)therefore, 8 stepping stone patches were added to supplement the important ecological sources, and 188 ecological corridors were added to optimize the ecological network;(4)after optimization, the connectivity of ecological network was improved, and the network closure index(α index), network connectivity index(β index)and network connectivity index(γ index)were increased by 1.99, 4, and 1.33, respectively. This study can clarify the practice path of building stepping stone in the improvement of ecological network of sea-island cities, provide effective theoretical support for the future ecological planning and urban healthy development of Pingtan Island, and also provide reference for the ecological protection and optimization of other sea-island cities.
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备注/Memo
收稿日期:2022-01-19 修回日期:2022-02-19
资助项目:国家自然科学基金面上项目(32071578); 福建省自然科学基金面上项目(2021J01133); 福建农林大学学科交叉融合项目(YSYL-xkjc-8)
第一作者:秦子博(1999—),男,河南洛阳人,硕士,研究方向为景观规划与生态环境保护。E-mail:1275960790@qq.com
通信作者:黄柳菁(1985—),女,广东肇庆人,博士,副教授,主要从事生态系统服务/功能评价研究。E-mail:huanglj@fafu.edu.cn