A Primary Study On Urban Green System Planning Of Lanzhou

The planning and construction of urban green system is advanced with times changed. The 21st century is a century of ecology ideal, confront with critical environmental problems and ecology problems, Lanzhou should pay much attention in protecting environment and improving the quality of green space in the process of urban development. With mining the intension of city ecology, we can get the conclusion the function of city green system with ecological ideal guided should be a compound of functions of ecology, economy, society and culture. And it is one of the most important measures to solve the urban ecology problems.With adequate investigation on site and collection of document materials, this dissertation uses the method of system, history, comparison and combination of qualitative method and quantitative method to research the main problem this dissertation discussing from a serial of aspects of theory of urban planning, landscape architecture, landscape studies, ecology, geography, sociology.By reviewing Lanzhou urban green system planning development since our nation founded and comprehending the directive idea and the dominant function of urban green system planning construction in different time, on the basis of these, the factor impacting on Lanzhou green system planning is analyzed. By these analyses, the intrinsic movement and rule of urban green system planning construction are fund. It helps to perfect urban green system planning layout and guide urban to logical, scientific and sustainable development. Next this dissertation analyzes the actuality of Lanzhou urban green system and fix attention on the key problem for urban green. These guide the orientation for solving further problem. Finally, from Ecological Conception, with Lanzhou nature-zone character, history-culture character, and urban pattern character, this dissertation presents the principle and direction of Lanzhou urban green system planning. Considering three import aspects of urban green planning, which is framework, quantity and essence, the notion of Lanzhou urban green system planning and practice in the future is presented. The conception has some implementation for it base on Lanzhou realistic green condition and is to previous urban green system plan extension.Rooting from history point of view, this dissertation sums up the development current of urban green system space structure, which is "distribution-system-fusing with green environment around", fusing with area environment, "fringe-core" from urban development, and leading way in the future; By deeply abstracting ecology notion, main three domain of urban green system planning, which is environment, landscape and people-using, were presented. The three domain supplie and contact with each other. It is visible exhibition that urban green compound function; Aim at Lanzhou instance, this dissertation brings forward principle and lodestar of city green system such as system conformity, adjust measures to local conditions, humanist. And a so-called two mountain barrier, Yellow River corridor, plus fish skeleton shape, plus green block urban green system space framework is sum up, which adapts to society development demand and takes on a zone pertinence, hereditable urban traditional altiplano landscape characteristic and science zoology benefiting from urban green system; Moreover, by combining function structure with space structure, green circle layer division method was presented, that is ecology green-barrier circle, nature landscape green circle, humanism-landscape green circle and inter urban green circle. This is organic combination for human habitation form and dweller motion time-space rule in the spare time, and a division from human motion center. So this division method satisfied with urban green plural compound function.This dissertation belongs to individual urban demonstration research. On the other hand, it has use for reference to other valley ribbon-form city in northwest.