基于绿地生态网络的南京仙林新城绿地空间优化研究

The Optimization of Green Space in Xianlin New Town in Nanjing Based on Green Space Ecological Network

绿地生态网络能确保生态过程的连续性,有利于维持和恢复自然生态系统功能,减少经济社会发展对生态系统功能和服务的不利影响,并兼顾环境、生态、人文等层面。该文以新城绿地为研究对象,运用绿地生态网络的原理,探索新城绿地网络的构建。并基于构建的网络成果,对南京仙林新城绿地空间的优化策略进行研究。首先调查分析仙林新城绿色基础设施状况,基于GIS平台,采用最小路径(LCP)方法,确定了潜在生态廊道,并通过重力模型的计算,提取了重要生态廊道,构建新城的绿地生态网络;再结合仙林新城的具体规划要求构建了生态型网络、防护型网络和游憩型网络的子系统,叠加得到综合绿地网络;最终总结并提出新城绿地网络的优化策略。

The spatial structure of green space network can ensure the continuity of ecological process, facilitate the maintenance and restoration of natural ecosystem functions, reduce the adverse impact of economic and social development on ecosystem functions and services, and also cover all aspects of the environment, ecology and humanity at the same time. Taking the system structure of new city green space as the research object, using the principle of green space ecological network, we explore the construction of new city green space network. Based on the results of the network construction, the optimization strategy of green space in Xianlin New Town in Nanjing was studied. Firstly, the status of green infrastructure in Xianlin New Town was investigated and analyzed. Based on the platform of GIS, the comprehensive cost consumption area was created. The potential ecological corridor was determined by Least-Cost Path Method(LCP). The important ecological corridor was extracted by gravity model calculation, and the green ecological network of the new town was constructed. Then according to the specific planning requirements of Xianlin New Town, the subsystems of ecological network, protective network and recreational network are constructed, and the integrated green space network is superimposed. Finally, we summarize and put forward the optimization strategy of new city green space network.