生态基础设施是城市所依赖的自然系统，是城市及其居民能持续地获得自然服务的基础，它不仅包括习惯的城市绿地系统的概念，而是更广泛地包含一切能提供自然服务的城市绿地系统、森林生态系统、农田系统及自然保护地系统。如同城市的市政基础设施一样，城市的生态基础设施需要有前瞻性，更需要突破城市规划的既定边界。为了达到这个目的，必须从战略高度规划城市发展所赖以持续的生态基础设施。中国城市化进程呈燎原之势，大量重大国土和景观改造工程史无前例，东部区域犹甚。京杭大运河作为南水北调工程东线的主要组成部分，跨流域大规模调水工程将会带来巨大的景观生态影响，都为建设中国东部生态基础设施和可持续国土安全计划带来莫大挑战和机遇。本文提出大运河区域生态基础设施建设战略和实施途径，可为南水北调工程和中国东部区域可持续生态基础设施建设提供参考，并且为大运河区域生态基础设施建设及遗产廊道保护提出具体实施途径，包括区域景观格局的构建和景观元素的设计导则。
关键字：大运河；国土安全；生态基础设施；南水北调
On Establishing The Great Canal Regional Ecological Infrastructure: Strategy and Approaches
YU Kongjian Li Dihua Li Wei
Abstract:Ecological infrastrueture (EI) is the crilical natural systems that provide nature's service to cities and their residents, which is composed of not only the traditionally recognized green systems, but also suburban forests, farm land and natural habitats that are connected as an integral infrastructure. Just like a civic infrastructure that is critical to the sustainable development of a city and a region,so is the ecological infrastructure to the sustainable environment of the region and the city. The construction of the El must be built across administrative boundaries and must be strategically allocated for the next centuries to come. Therefore, the planning and construction must be taken as long-term strategy at the regional and national scales. The speedy urbanization process, and the enormous landscape change projects such as the water diverting projects from the south to the north, offer great opportunities to the formation of the regional El. This paper proposes the plan
key words:ecological infrastructure; great canal; ecological planning; south-north water divert
1 关于区域生态基础设施实践与理论
生态基础设施(Ecological Infrastructure，简称EI)，本质上讲是城市所依赖的自然系统，是城市及其居民能持续地获得自然服务的基础(Natures Services)，这些生态服务包括提供新鲜空气、食物、体育、休闲娱乐、安全庇护以及审美和教育等等。它不仅包括习惯的城市绿地系统的概念，而且更广泛地包含一切能提供上述自然服务的城市绿地系统、森林生态系统、农田系统及自然保护地系统。
1．1 早期规划实践和理论中体现出来的生态基础设施建设思想
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