| 摘要: |
| 海岸带是陆海连接的重要区域，通常受到人类活动的影响最为突出，识别和优化陆海连通生态廊道，能够有效地保护和恢复生态系统连通性和完整性，对陆海生态流通、区域生态网络构建、开展关键生态节点保护修复也尤为重要。本研究基于“生态源地识别-阻力面构建-生态廊道提取-夹点、障碍点影响因素分析”的框架，以罗源湾海岸带为研究区，在海岸带生态功能评估基础上，结合Linkage Mapper模型和电路理论识别陆海连通区域生态廊道，并提取生态夹点、障碍点以及关键生态节点，分析节点区影响因素，提出廊道优化的建议。结果表明：①研究区共分布25条生态廊道，潜在14处生态夹点和生态障碍点，6处陆海连通关键节点；②生态廊道多分布于生态源地斑块连接处，生态夹点和障碍点多分布于廊道中生态阻力值较高的区域；③人类活动主导的驱动因子对关键生态节点的影响更多，自然因素为主的因子也有一定程度影响，但两者间的交互作用并不显著；④以“点-线-面”结合的廊道优化策略能够较好地实现海岸带陆海连接区域蓝绿生态网络格局构建。整体上，研究能够促进罗源湾海岸带生态源地斑块的连通性和完整性，保障陆海生态流通，提升海岸带区域生物多样性，维持海岸带生态系统健康和稳定状态。 |
| 关键词: 海岸带生态廊道|生态功能评估|生态夹点和障碍点|Linkage Mapper|陆海连通 |
| DOI：10.3969/J.ISSN.2095-4972.20231231004 |
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| 基金项目:广西北部湾海洋资源环境与可持续发展重点实验室开放基金重点课题(MRESD-2024-A05) |
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| Research on the identification and optimization of land-sea ecological corridors based on the assessment of ecological functions in coastal zones |
| YIN Feijian,CHEN Huaxiang,HUANG Faming,CHEN Qiuming,YANG Suzhen |
| (Third Institute of Oceanography，MNR，Xiamen 361005，China;Guangxi Key Laboratory of Beibu Gulf Marine Resources，Environment and Sustainable Development，Fourth Institute of Oceanography，MNR，Beihai 536000，China) |
| Abstract: |
| The coastal zone serves as a critical interface between land and sea，impacted so often by human activities. Recognizing and enhancing the ecological corridors is crucial for the safeguarding and restoring the connectivity and integrity of the ecosystems，especially for ecological exchanges between terrestrial and marine environments，as well as the development of regional ecological network，the protection and restoration of key ecological nodes. This study，based on the framework of the process of “ecological sources identification and construction of resistance surfaces-extraction of ecological corridor， analysis of factors affecting pinch points and obstacles”，taking Luoyuan Bay coastal zone as study area. It identifies the corridors of land-sea connectivity based on the coastal ecological functions，and pinpoints ecological pinch points，obstacles and key nodes using the Linkage Mapper model and Electric Circuit theory. Then the study analyses the factors influencing these nodes and proposes corridor optimization strategies. Results show that：(1)the presence of 25 ecological corridors，14 potential ecological pinch points and obstacles，6 key land-sea connectivity nodes in the area；(2)ecological corridors are mostly distributed in the connection of ecological source patches，and ecological pinch points and obstacles typically found in areas of high ecological resistance within the corridors；(3)human activity is a more significant driver affecting key ecological nodes though natural factors also play a role with limited interaction between the two；(4)the “point-line-plane” optimization strategy is more effective in establishing an ecological network pattern in the coastal zone. Overall，this study can promote connectivity and integrity of ecological source patches in Luoyuan Bay and stability of the ecosystem. |
| Key words: coastal zone ecological corridor|ecological function assessment|ecological pinch-points and barrier points|Linkage Mapper|land-sea connectivity |
