Research On The Evolution Of Urban Green Space System's Layout Structure Of Shanghai Based On Organic Evolution Theory Of Urban Green Space System

Along with the rapid progress of the city,environment problems become prominent day by day.Finding a way to make the coexistence of urban and nature,build the harmonious of humanity and nature,and promote sustainable development of the society has inevitably become an important development direction.The urban forestation is the symbol of the city civilization degree and also the important content of the environment construction.Its final goal is to improve the ecological environment,beautify the city, improve resident's quality of life,and promote the sustainable development of the society.With the people's increasing attention to environment problems,the urban green space construction is receiving more and more recognition.Building a scientific and reasonable green system layout structure has been an important topic and content of forestation construction and sustainable development of the city.But the existing research results are still far insufficient,so we need further and deeply analysis for the urban green system layout structure from different points of view.Shanghai is a typical super city with high speed economical progress and enormous population density,so the contradiction between the human activity and ecologic environment is very prominent.Solving these problems to a great extent depends on the improvement of the green system layout structure.Along with 2010 Shanghai World Expo's approaching,we need more scientific and reasonable green space system layout structure to guide the benign development of the city.Therefore researching on the past, the present and the future of the urban green space system and grasping the universal law and movement characteristics of its evolution may help us more scientifically and effectively use city space and optimize land utilization structure.The thesis mainly includes five parts of contents.The 3^rd chapter carries on the limits to the related concept and basic theory of the green space system layout structure and introduces the urban green space system organic evolution theory.The 4^th chapter is the research on evolution background of the green space system layout structure of Shanghai. The 5^th chapter is the research on evolution mechanism of the green space system layout structure of Shanghai.The 6^th chapter analyzes and proposes evolution tendency of the green space system layout structure of Shanghai.The 7^th chapter proves the points proposed in the thesis based on the analysis of the practical case.The thesis focuses on the evolution of the green system layout structure based on the urban green space system organic evolution theory.Firstly taking the time axis as clue and through analyzing the vicissitude of Shanghai's politics,economical,and cultural,the requirements evolution for the green space system,the progress of the green space construction and its target,and the promotion of the plan concept as well as the mutation of the safeguard system,make clear the evolution background of the green space system layout structure of Shanghai.Then we reorganize the history course of the evolution of the green system layout structure,induce the evolution characteristics of the green space system layout structure in several important periods,deeply discuss the driving mechanism of the green space system layout structure evolution and deduce its future evolution tendency.Finally based on the concept and the conclusion we proposed as the foundation and taking the layout project of "the Implementation Plan of Green System of Shanghai (2008-2015)" as the object,discuss the evolution course and future development trend of the green space system layout structure of Shanghai.The research results have certain theory significance and practical merit for improving the urban environment,planning the reasonable green space system layout structure.We hope our results can provide the theory basis and beneficial profits for the future city green space system planning and construction.