Study On The Construction Of Urban Corridor System In Tibetan Areas Of Sichuan Province Based On Ecological Infrastructure

This research was carried out under the auspices of the National Natural Science Foundation of China,“Study on the Ecological Optimization Mechanism of Urban Spatial Structures in Sichuan Province Based on Complex System Theory”(batch number: 51778454).At present,China is in a transitional period from the extension of extension to the connotation of urbanization.How to co-ordinate the ecological space such as “Shanshui Tianlin Lake Grass” and guide the urban development towards sustainable and intensive development is a hot topic in the development of urban development.As an important part of the national ecological function zone,the path of sustainable and ecological development is the only way for Sichuan Tibetan areas.In recent years,due to the large-scale development policy of the western region and the injection of large capital flows,and in the urban demand for social,economic,cultural and other multifunctional development,a large number of artificial infrastructure construction and urban and rural construction activities are in full swing.At the same time,this change has brought shocks and many unstable factors to the natural ecological pattern of Sichuan Tibetan areas that have not had significant human disturbance for thousands of years,such as serious landscape fragmentation,obstruction of natural ecological corridors,deterioration of habitats,etc.Based on this background,this paper studies the problem of finding problems,analyzing problems and solving problems.Starting from exploring the natural ecological pattern of Sichuan Tibetan areas and the status quo of urban development,using the superposition analysis method,the core problem of the current situation of the corridor system in Sichuan and Tibet is discovered.The contradiction between man and nature is implemented in space,which is the demand for construction space in urban development.And the ecological benefits play a demand for the ecological space,thus proposing the problem orientation of “the contradiction between man and nature”.And the problem is manifested in three aspects: ecological resource integration,current situation planning and construction,and later implementation of management and control.Firstly,based on the relevant researches of domestic and foreign scholars,this paper starts from the perspective of ecological infrastructure,and extracts and analyzes the spatial scale,habitat type,landscape type and network evaluation of ecological infrastructure in Sichuan and Tibet.Therefore,a multi-scale system of regional-county-township and built-up areas has been established,and seven kinds of landscape types such as core area,bridge area and island are extracted from different habitats by means of MSPA and comprehensive network analysis.Further through the network evaluation,the specific crux of the ecological pattern at different scales is found.Then,taking the analysis and extraction of ecological infrastructure as the ecological blueprint,using the minimum cumulative cost method,after screening the ecological hub,identifying the potential corridor,and constructing the network structure,the regional-county-town-building area and the built-up area are layered.Weaving the corridor network system and quantifying the spatial points where people and nature are in conflict through the superposition method.Then,with the network system structure as the skeleton,from the three aspects of functional structure,spatial layout and land use,the planning,organization and space optimization of the corridor area-county-township and built-up corridor system in Sichuan Province are carried out.The gradual gradual relief of the contradiction between man and nature in the corridor space,thus constructing the "community corridor system of human and natural life."Finally,for the Sichuan Tibetan Region,from the optimization of regional constraint framework,county refinement management and control mode,and the deepening design guidance of the town,the implementation strategy and management strategy with appropriateness are proposed accordingly.