The Chengdu Plain Water And Urban Location History Research

Chinese ancient town location selection is a complex problem, water conservancy, set economic,military,meteorological, geological disaster prevention, aesthetics, multidisciplinary, multi field, from conscious to create urban construction activities, also started thinking about the problem of human, and has accumulated rich experience in long-term location practice, in general showing patience and caution, simple and practical, clear regional characteristics and the characteristics of the times, is highlighted China conventional wisdom in dealing with complex problems. After the reform and opening up, after thirty years of construction of rapid urbanization, the majority of cities and towns in China has basically completed the layout stage, Metro construction boom be just unfolding, but many site rush, inevitably there were many serious problems. How to recognize the nature, the relationship between human beings and nature, has become the focus of each field problems. Especially in the current model the context of urbanization, urban space elements inside and outside faces further optimization, clustering and reorganization of the historical opportunity, complex man land relationship and the town of serious security problems will become an important challenge for urban development. Therefore, summing up the ancient town with local characteristics and adaptability is of great historical significance and practical significance of location rules and experience.Chengdu Plain is one of the origin of Chinese civilization, in the spread of the thousands of years of civilization in the city, river system as one of the most important nature factors runs through them, as the ancients described "town of trench, and who have context, it also" as veins town not only bears abundant cultural connotation, created "the land of abundance" Chengdu plain name, will have a profound impact on all aspects of urban location is. The model of "water in the benefit to avoid the harm of the water", summarize the Chengdu Plain with local characteristics of urban location rules and experience, and the river system is regarded as a factor that can not be ignored, especially in the Chengdu Plain now faced "trapped" due to water under the dilemma, for the sustainable development, provide a reference way.Therefore, this paper takes river system as the breakthrough point, in the chengdu plain town location as the research object, with longitudinal time for clues, according to the chengdu plain water system, the location of the town will delimit the development process of the historical dimension is divided into four stages (5000 BC to 256 BC,256 BC to 256 AD, AD 266 to AD 266,1271 AD to 1271 AD), the reduction in detail the relevant historical facts, and with Tan Jixiang atlas of historical geography based fill paint, painting, to draw the different stages of chengdu plain river system change, the site distribution drawings, focuses on each stage of chengdu, dujiangyan town location as well as the specific circumstances and characteristics of construction, trying to analysis of chengdu plain % from the macro, meso level...