长江流域资源与环境 >> 2025, Vol. 34 >> Issue (2): 364-373.doi: 10.11870/cjlyzyyhj202502011

• 生态环境 • 上一篇    下一篇

江南水乡地区生态保护修复重点区域识别——以常州市金坛区为例

王琪琪1,4,濮励杰2,高根红3,王玉军1,4,宋珂1,4,杨磊1,4   

  1. (1. 江苏省地质调查研究院,江苏 南京 210018;2. 南京大学地理与海洋科学学院,江苏 南京 210023;3. 南京农业大学公共管理学院,江苏 南京 210095;4.江苏省自然资源厅卫星遥感应用重点实验室,江苏 南京 210018)
  • 出版日期:2025-02-20 发布日期:2025-02-28

Identification of Key Areas for Ecological Restoration in Jiangnan Water Town Area: A Case Study of Jintan District, Changzhou

WANG Qi-qi1, PU Li-jie2, GAO Gen-hong3, WANG Yu-jun1, SONG Ke1, YANG Lei1   

  1. ( 1. Geological Survey of Jiangsu Province, Nanjing 210018, China; 2. School of Geography and Ocean Science,Nanjing University,Nanjing 210023,China; 3. College of Public Administration, Nanjing Agricultural University, Nanjing 210095, China;4.Key Laboratory of Satellite Remote Sensing Applicaions,Department of Natural Resources of Jiangsu Province,Nanjing 210018,China  )
  • Online:2025-02-20 Published:2025-02-28

摘要: 高度城市化进程中的江南水乡地区生态系统面临威胁,开展生态保护修复重点区域识别,保护该地区敏感脆弱的生态环境非常重要。选择常州市金坛区为江南水乡地区的典型案例,运用岛屿生物地理学理论识别生态源地,通过最小累积阻力模型(MCR)提取生态廊道,结合重力模型进行生态廊道的重要性分级,根据生态廊道的重要性分级、生态廊道相交点的分布情况以及土地利用情况,确定区域生态夹点和生态障碍点,识别国土空间生态保护修复关键区域,据此构建生态安全格局,提供生态修复的策略。研究结果表明:(1)区域生态源地面积152 km2,其中陆域生态源地共44个,总面积为49.3 km2,集中分布在茅山;水域生态源地共77个,总面积为102.7 km2,集中分布在长荡湖;(2)生态廊道总长度432.4 km,陆域生态廊道呈“横向伞状”分布,水域生态廊道呈“内闭外开双环”式分布。极重要生态廊道93.2 km,重要生态廊道157.8 km,一般重要生态廊道181.4 km。(3)区内生态夹点16个,重要生态夹点有9个,主要位于金坛区西部的茅山和天荒湖;生态障碍点14个,主要生态障碍点6个,分布在建筑密度较高的主城区以及高等级道路与生态廊道的相交处。(4)通过关键区域识别,以主要生境斑块的有效连接、保护关键夹点、修复关键障碍点为原则,提出构建金坛区“一核、三片、五带”的国土空间生态安全格局。研究可为长江下游的江南水乡地区开展国土空间生态保护修复提供参考。

Abstract: The ecosystem in the water towns of Jiangnan is facing threats in the process of high urbanization. Identifying key areas for ecological protection, restoration and protecting is important. This study selected Jintan district of Changzhou City as a typical case of the Jiangnan water town area. We used island biogeography theory to identify ecological sources. The ecological corridors were extracted based on the minimum cumulative resistance model (MCR). Combined with gravity model, the importance of the ecological corridors was graded. The regional ecological bottlenecks and obstacles were then identified. Based on these, an ecological security pattern was constructed to provide strategies for ecological restoration. The results showed that: (1) the area of regional ecological source was 152km2. There were 44 terrestrial ecological sources with a total area of 49.3 km2, which were concentrated in Maoshan; There were 77 ecological water sources with a total area of 102.7 km2, which were distributed in Changdang Lake. (2) The total length of ecological corridors was 432.4km, and the land ecological corridors were distributed in a "horizontal umbrella" pattern, while the water ecological corridors were distributed in a "double-loop" pattern. The extremely important ecological corridor was 93.2km, the important ecological corridor was 157.8km, and the generally important ecological corridor was 181.4km. (3) There were 16 ecological spots including 9 important ecological spots, which was mainly located in Maoshan and Tianhuang Lake in the west of Jintan District; There were 14 ecological obstacle points including 6 major ecological obstacle points, which were distributed in the main urban area of high building density and the intersection between high-grade roads and ecological corridors. (4) Based on the principles of effective connection of major habitat patches, protection of key pinch points and restoration of key obstacles, we proposed that a national spatial ecological security pattern of "one core, three areas, and five belts" be built in Jintan District. This study provided reference for carrying out land spatial ecological protection and restoration in the Jiangnan water towns in the lower reaches of the Yangtze River.

No related articles found!
Viewed
Full text


Abstract

Cited

  Shared   
  Discussed   
No Suggested Reading articles found!