The Format Criterion Study On The The Yellow River Waterfront Space Planning In Lanzhou City Based On Ecological Edge Effect

Lanzhou is the "two mountains, a typical" Valley City, waterfront space in city is one of the most valuable resources in the city, with rich species diversity and its unique amphibious staggered, not only provides outdoor venues open pleasant scenery, close to nature as the city residents, but also to the city’s ecological integration, economic development, shaping the image and enhance the quality of living environment plays an important role. However, the special geographical environment of Lanzhou, the development of city waterfront space are limited to a certain extent, and the disorder spread to use in industrial and mining enterprises and the development of city, city waterfront space has led to a series of ecological environment problems, which restricts the sustainable development of the whole city. "Fringe" should have a more active energy flow and material flow, with more species and higher productivity, will have "beyond the local part of the sum of the individual functions of the ecological relevance of value-added benefits", and barren or destroyed "fringe" is not only the benefits, but the radiation surrounding areas will become the source of ecological damage. Therefore in the ecological planning, the edge effect is a universal phenomenon in different interfaces, the sustainable development of the integration for the benefit of ecological system, the release of hidden benefits and to promote the development of ecological factors of ecological system plays an important role.In the city waterfront space planning, we always used to isolated way to seek solutions, ignoring its contact with the surrounding environment, so often care for this and lose that. By studying the relevant literature review and study of relevant theory, this paper uses the "edge effect" in the ecological planning, the current situation of the development of the waterfront in the Yellow River and existing problems of Lanzhou City, using the analytic hierarchy process, based on the waterfront ecological association "edge effect" as the main line, the scope of the study waterfront space is divided into macro, meso regional level city overall level and microscopic level and core research, effects on the waterfront development of the "edge" factors are summarized and analyzed, in order to achieve the excitation of Lanzhou city the Yellow River waterfront space ecological energy and increment of benefit as the goal, put forward the concept of ecological planning of different levels, to the northwest of many of the "Valley City" also has a certain significance. The thesis consists of 3 parts:The first part, through the relevant theoretical knowledge of the study and related literature, ecological planning, put forward the "edge effect" and the city ecological integration, city waterfront space ecological planning and other related concepts, provide a theoretical basis for the ecological planning for the the Yellow River waterfront space of Lanzhou city.The second part, on the basis of the existing literature, field visits, in-depth study of the geographical environment of Lanzhou city and the the Yellow River waterfront space, influence analysis of the main problems and the "edge" of it, the restoration of ecological environment of the Yellow River waterfront open space of Lanzhou city and provide theoretical guidance for the protection of.The third part, according to the related theory, combined with the actual situation of Lanzhou City, based on the "edge effect" of the Lanzhou the Yellow River city waterfront space ecological planning, ecological planning strategies at different levels.