论大运河区域生态基础设施战略和实施途径

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。

On Establishing The Great Canal Regional Ecological Infrastructure: Strategy and Approaches

Ecological infrastructure(EI)is the critical 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 EI 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 pro-jects such as the water diverting projects from the south to the north ,offer great opportunities to the formation of the regional EI.This paper proposes the planning and establishment of a regional ecological infrastructure along the Great Canal to support the sustainability of the east China ,meanwhile provides opportunities for local and regional recreation ,and protects a historical heritage corridor.Step-by-step approaches are also suggested for the planning and design of the Great Canal ecological infrastructure.