Research On Mechanism And Optimization Of Intensive Land Use In Xi'an Built-up Areas Under The Guidance Of Low-carbon Travel

The built-up area is the main area for the control of urban land use in China.In the process of its renovation,the synergy between stock and increment is one of the core issues of current research.In recent years,with the improvement of urban motorization level,the built-up area is facing serious contradiction between supply and demand of transportation,especially the increasingly serious “more development,more congestion" phenomenon in the built-up areas of large and medium-sized cities.However,in most urban built-up areas of China,the existing land resources are relatively insufficient,the degree of transformation is low,and the development space of road traffic facilities is limited.In the context of the characteristics of this built-up area,the choice of low-carbon travel mode and intensive land use has an important contribution to solving the contradiction.Therefore,it is of great practical significance to carry out the intensive land use mechanism and optimization of the built-up areas under the guidance of low-carbon travel,and to realize the synergy between stocks and increments in the renovation of built-up areas.This paper uses multi-disciplinary theories and methods to take Xi'an built-up areas as the research area,with the total amount,stock and margin of land as the boundary constraints,starting from a variety of travel modes,multiple spatial scales and multiple indicators,to explore the consistency of coordination between low-carbon travel and land intensive land use.The relationship between the temporal and spatial behavior characteristics of residents' travel and the land use characteristics of the built-up area was clarified,and the intensive land use mechanism of the built-up area under the guidance of low-carbon travel was revealed and an optimization theory model was created.Thereby,it is possible to optimize and measure intensive land use control indicators was completed and formulate the corresponding intensive land use optimization strategies.First of all,through the analysis and summary of the interactive relation between residents' travel mode and land use,the relevant research results and future research directions of low-carbon travel and land intensive-use in the built-up area,this paper has found a breakthrough for the writing.Secondly,from the two dimensions of “temporal and spatial behavior of residents' travel” and “land use”,the multi-source heterogeneous data was used to explore the temporal and spatial behavior characteristics and land use characteristics of residents in Xi'an built-up areas.Third,through the correlation analysis between the low-carbon travel indicators and the land use characteristics of the built-up areas,the characteristic indicators of intensive land use were determined,and the low-carbon travel matching mode under different travel modes was clarified.Fourthly,combined with the statistical analysis of data correlation,this paper has revealed the operational mechanism of intensive land use in built-up areas of Xi'an under the guidance of low-carbon travel,and clarified its operation from three aspects of supply and demand balance mechanism,impact constraint approach and impact constraint level.Fifthly,on the basis of summarizing and optimizing the existing models,the optimization model of intensive land use in Xi'an built-up areas which was suitable for different spatial levels and guided by low-carbon travel is constructed.Sixth,the optimization model is used to calculate characteristics indicators and optimization results of the intensive land use at different spatial levels.Under the low-carbon travel guidance,to check and feedback analyze the intensive land use Xi'an built-up areas,and to propose an optimization strategy.The results can provide theoretical and technical methods for the revelation of temporal and spatial mechanism of intensive land use in the built-up area under the low-carbon oriented traffic.This paper has built a set of intensive land use indicator system in Xi'an built-up areas under the guidance of different low-carbon modes of travel.Finally,a scientific and effective mathematical relationship model was established,and a set of optimization intervals for land use indicators,which is suitable in different spatial levels in built-up areas of Xi'an was deduced.It has provided not only a direct basis for the study of intensive land use in built-up areas,but also the specific technical support for the renovation of land use in built-up areas in China,with a view to improving the scientific and operability of planning and construction.