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殷炳超,何书言,李艺,李杨帆.基于陆海统筹的海岸带城市群生态网络构建方法及应用研究.生态学报,2018,38(12):4373~4382 本文二维码信息
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基于陆海统筹的海岸带城市群生态网络构建方法及应用研究
Development and application of an ecological network model for a coastal megalopolis based on land-sea integration
投稿时间:2017-12-27  修订日期:2018-05-10
DOI: 10.5846/stxb201712272335
关键词生态网络  陆海统筹  生态廊道  闽三角城市群
Key Wordsecological network  land-sea integration  ecological corridor  megalopolis Minsanjiao
基金项目国家重点研发计划(2016YFC0502904);国家自然科学基金青年科学基金项目(417012055)
作者单位E-mail
殷炳超 厦门大学环境与生态学院, 厦门大学海洋与海岸带发展研究院, 厦门 361102  
何书言 厦门大学环境与生态学院, 厦门大学海洋与海岸带发展研究院, 厦门 361102  
李艺 厦门大学环境与生态学院, 厦门大学海洋与海岸带发展研究院, 厦门 361102  
李杨帆 厦门大学环境与生态学院, 厦门大学海洋与海岸带发展研究院, 厦门 361102 yangf@xmu.edu.cn 
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摘要:
海岸带地区地处海陆交互作用频繁地带,快速城市化作用下该区域陆海生态斑块破碎化问题突出。以"闽三角"城市群(厦门市-漳州市-泉州市)为例,提取生境敏感区、重要生态功能区及自然保护区等生态斑块的空间信息,以陆域的土地利用类型及海域的海洋功能区划构建阻力面,采用最小费用路径法,构建闽三角地区陆海一体化的生态网络,并通过网络闭合度(α指数)、线点率(β指数)和网络连接度(γ指数)评价其生态网络完善度。结果表明:(1)模拟构建的陆海一体化生态网络中连接重要生态斑块的廊道和节点主要分布于陆域的林地、草地和海域的保护区、保留区及特殊利用区等自然属性较高的区域,而人类活动密集的建设用地、港口区等则对生态廊道有较强的阻隔作用;(2)陆海交互作用的海岸带是沿海城市发展的重点区域,同时也是连接陆、海生态斑块的关键生态区域,连接陆海的生态廊道承受着城市快速发展带来的较大压力;(3)生态网络完善度评价结果(α=0.86,β=2.56,γ=0.91)表明构建的闽三角生态网络目前整体状态正常,但需关注海岸带快速城市化及其他高强度人类活动胁迫下的网络状态演变和预警。以陆海生态网络为基础,统筹闽三角城市群陆域和海域的整体生态安全布局,为海岸带城市群快速城市化过程中的陆海统筹、生态管理提供了新的思路和支撑。
Abstract:
Coastal areas, in land-sea interaction zones, are experiencing rapid urbanization, resulting in fragmentation of coastal ecosystems. Using the megalopolis of Xiamen-Zhangzhou-Quanzhou, known as Minsanjiao region, as an example, we established an ecological land-sea network using the least-cost path (LCP) algorithm based on the geospatial data (land use and land cover, marine functional zones, sensitive habitats, and protected areas). We evaluated the integrity of the ecological network using three indicators: network circuitry (α), line to node ratio (β), and network connectivity (γ). Our results show that (1) key corridors and nodes that connected the important ecological patches in the integrated land-sea network were mainly distributed in forests, grasslands (inland), and marine protected areas, while built-up areas with intensive human activities had strong barrier effects on ecological corridors; (2) coastal ecological corridors endured great pressures from rapid urbanization due to their key roles as the ecological patches connecting the land and sea and centers for urban development; (3) the high ecological network integrity scores (α=0.86, β=2.56, γ=0.91) indicated a normal ecological network status in our study area. However, the rapid coastal urban development and other intensive human activities show early warning signals of potential ecological degradation. This research provides a new method for the land-sea integration and ecological management of coastal cities though configuring the land-sea ecological network and modeling the overall land-sea ecological security of the Minsanjiao megalopolis.
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