Accessibility Of Traffic Network And Its Dynamic Relationship With Urban Land Use Change

Transportation network and its development are the important driving factors of urban expansion,and play an important role in the spatial differentiation and transfer of urban land use.At the same time,the development of the city also played a stimulating role in the construction of the traffic network.Based on the study of the evolution of transportation network and its accessibility,this paper analyzes the temporal and spatial law of urban expansion along the traffic axis.Then,explores the relationship between traffic network and urban expansion,and analyzes the relationship between traffic accessibility and land use distribution.It is hoped that it can provide scientific basis for transportation planning,urban land planning and ecological protection.In this paper,Dongguan and Hong Kong were selected for analysis.Among them,Dongguan as the main analysis object.Quantitative analysis of the accessibility of traffic network in Dongguan over the past 30 years has been made by using census data.The temporal and spatial distribution of urban built-up area along the traffic axis is analyzed.The association rules of traffic network and urban expansion are mined.The change of land use transfer along the traffic axis is studied.Based on the data of traffic network and traffic flow in Hong Kong,the correlation between accessibility and traffic flow is analyzed.In the concrete analysis,firstly,based on the accessibility analysis model,with the help of software and AE two development tools,this paper analyzes the accessibility and evolution of Dongguan.To explore the relationship between Hong Kong road accessibility and traffic;secondly,based on the spatial statistical analysis and landscape pattern analysis,analysis of city expansion characteristics and correlation analysis,systematically studied the temporal and spatial characteristics of urban expansion in Dongguan city and the relevant department of transportation network.The association rules of traffic network and urban built-up area are explored.At the same time,the appropriate scale to calculate the road network combined with social economic data;land use change analysis and corridor effect analysis based on the principle of Dongguan Road,using transfer effect on the land along the road,analyzes the traffic network and housing construction land and ecological land correlation,and compared with Hong Kong.The results can provide scientific guidance for future land use planning and ecological protection.The results show that:1.The road with high level of global accessibility inDongguan is mainly distributed in the main city area and the city center with the "ring"and "stem branch" structure.The level of accessibility of the main city and the central town is higher,while the accessibility level of the western town is relatively low.The main distribution of traffic accessibility in Hong Kong and the Kowloon city.Local accessibility is positively correlated with traffic volume.2.The development of Dongguan urban built-up area along the traffic axis presents the "axial expansion" and the "transverse filling" rule.There is a positive correlation between the density and accessibility of traffic network and the built-up area.3.The density of the first grade roads and the rural roads have a strong influence on the urban grade.4.Along the line of land use in the early stages of the road closer to the planting land will be easier to change into housing construction land.In the latter part of the development of city,the housing land sources gradually change forest grassland.5.In the spatial structure of land use,the traffic corridors formed by the main roads and streets and lanes have an important impact on the development of land use.This trend will be based on the impact of various types of land use types,different spatial characteristics.Overall,the work of this paper for the analysis of traffic network and other domestic city and city dynamic relationship has a guiding role and a certain significance for land use planning and city traffic construction.