Construction of ecological security patterns and ecological restoration zones in the city of Ningbo, China
Construction of ecological security patterns and ecological restoration zones in the city of Ningbo, China
复制标题
DOI：
10.1007/s11442-022-1966-9
复制
发表时间：
2022-04-01
影响因子：
4.9
通讯作者：
Cao Luodan
中科院分区：
文献类型：
--
作者：
Zhang Haitao;Li Jialin;Cao Luodan
研究生态安全格局背景下的生态恢复分区过程，对景观格局的快速调整和优化具有重要意义。采用遥感生态指数和形态学空间格局分析方法，对宁波市生境质量进行评价，识别生态源;运用电路理论提取生态廊道、生态夹点和生态屏障点，构建生态安全格局和生态恢复带。结果表明：（1）宁波市共有47个生态源，83条重点生态廊道，生态用地面积约1898.39km2，占研究区总面积的19.89%。(2)生态源区呈“一片三带”分布，低阻生态廊道集中在余姚市南部、海曙区西部和奉化区中西部，西部和南部生态网络密集。(3)生态恢复区的类型有4种，即优先恢复区、优先保护区、重点保护区和一般保护区，从内到外依次分层分布。(4)宁海县、余姚市、奉化区生态用地面积大，但宁海、奉化的重点修复保护区面积也大。分析结果可为城市国土生态空间的优化提供参考。
Studying an ecological restoration zoning process under the background of ecological security patterns is of great significance to the rapid adjustment and optimization of a landscape pattern. In this study, a remote sensing ecological index and a morphological spatial pattern analysis method were used to assess the quality of habitats and identify ecological sources in the city of Ningbo; ecological corridors, ecological pinch points, and ecological barrier points were extracted by using a circuit theory to construct ecological security patterns and ecological restoration zones. The results indicate: (1) There were 47 ecological sources, and 83 key ecological corridors in Ningbo, and the ecological land area was about 1898.39 km(2), accounting for 19.89% of the total study area. (2) The ecological source areas were distributed in "one patch and three belts", and the low-resistance ecological corridors were concentrated in southern Yuyao city, western Haishu district, and central and western Fenghua district; the ecological network in the western and southern regions was dense. (3) There were four types of ecological restoration zones that need to be established, which were prioritized restoration zones, prioritized protection zones, key conservation zones, and general conservation zones distributed hierarchically from inner part towards outside. (4) Ninghai county, Yuyao city, and Fenghua district had large ecological land areas, however, prioritized restoration and protection zones in Ninghai and Fenghua were also large. The analysis results are expected to provide a reference for optimizing a territorial ecological space in a city.