江南水网区域复合型生态网络构建初探 ——以常州市金坛区为例

随着城市化进程的加快，江南水网区域原有的自然生境和生态过程遭到破坏，城市生态安全受到威肋、地域特色景观风貌逐渐丧失，构建复合生态网络对区域生态保护和可持续发展具有重要意义。该研究综合考虑生物过程、水文过程和人文过程，基于累积阻力模型构建生境网络和游憩网络，利用ArcGIS水文分析构建水绿网络，通过GIS空间叠加构建多目标融合的生态网络框架，以常州市金坛区为案例区进行复合网络构建探索。研究结果表明：（1）研究区单目标生态网络源地面积表现为水绿源地>生态源地>游憩源地；双目标生态源地面积中生态水绿源地>水绿游憩源地>生态游憩源地，源地面积在区域总面积中占比较小，主要分布在西部茅山和南部长荡湖区域；（2）研究区三重功能廊道主要分布在中部与西侧茅山之间，除此之外，西南部还分布大量生态和水绿廊道；东北部还分布较多游憩廊道；（3）后期应对源地和廊道分布较多的西部和南部等重点生态功能区加强保护，而对东部和北部等生态脆弱区重点建设，提升其生态功能；（4）经案例验证，构建复合型生态网络可以联系区域中相对孤立的景观斑块，有利于保护生物多样性、改善城市生态环境、维护区域景观格局、引导区域空间合理发展。

Preliminary Study on the Construction of Complex Eco-network in Jiangnan Water Network Area：A Case Study of Jintan District of Changzhou City

With the acceleration of urbanization, the original natural habitats and ecological processes in the Jiangnan water network area have been destroyed, the urban ecological security has been gradually lost due to the ribs and regional features, and the construction of a composite ecological network for regional ecological protection and sustainable development. It is of great significance. This study comprehensively considers biological processes, hydrological processes and human processes, builds habitat networks and recreation networks based on cumulative resistance models, constructs water-green networks using ArcGIS hydrological analysis, and builds an ecological network framework for multi-objective fusion through GIS spatial superposition to Jinzhou Jinzhou. The district explores the construction of a composite network for the case area. The results show that: (1) The source area of single-objective ecological network in the study area is water-green source area > ecological source area > recreational source area; the source area of double-objective ecological source area is water-green ecological source area > water-green recreational source area > Ecological Recreational source area, and the source area accounts for a small proportion in the total area, mainly distributed in Maoshan in the West and Changdang Lake in the south; (2) The triple-function corridors in the study area are mainly distributed between the central and Western Maoshan Mountains. In addition, a large number of ecological and water-green corridors are also distributed in the southwest; more recreational corridors are distributed in the northeast; (3) In the later period, we should strengthen the protection of the key ecological functional areas such as the western and southern areas where the source and corridor distribute more, while strengthening the protection of the eastern and Northern areas. (4) Through case studies, the construction of complex ecological network can connect relatively isolated landscape patches in the region, which is conducive to the protection of biodiversity, the improvement of urban ecological environment, the maintenance of regional landscape pattern, and the guidance of the rational development of regional space.