| The continuous advancement of urbanization has exacerbated the urban thermal environment effect and caused a series of urban thermal environment problems.The urban thermal environment effect is the result of a combination of various factors in the city.The spatial distribution of these factors is related to the layout of various types of land in the city.It is necessary to improve the urban thermal environment by optimizing the layout of urban land.Limited by the knowledge of cross-disciplinary research,although more studies have been conducted on the thermal environment effects of urban land use layout,systematic research on comprehensive urban land use layout and thermal environment at all levels is still weak.It is necessary to carry out multi-scale and multi-level urban land layout and thermal environment research to provide scientific guidance for improving the urban thermal environment.Based on the subject of urban planning,this paper takes the urban thermal environment effect as the research object,and conducts the research on the thermal environment effect of the urban land layout of Hanyang District from two aspects: theoretical research and empirical analysis.In the theoretical research,systematically sort out the basic theories and research progress related to the urban land layout and thermal environment,and summarize the land use layout factors that affect the urban thermal environment.In the empirical analysis,using the urban land data of Hanyang District and the urban thermal environment data obtained by inversion of remote sensing data,the following two aspects of research were carried out:(1)The analysis of the thermal environment effect of the urban land layout.Firstly,it analyzes the spatial characteristics of urban thermal environment in Hanyang District from the three aspects of hierarchical distribution,landscape pattern,and spatial structure,and then identifies urban thermal environment problems;then,it studies the status of urban land use in Hanyang District from the three aspects of dominant land use function,landscape pattern,and spatial structure Its thermal environment effect.(2)Analysis of the comprehensive effect of urban land layout on urban thermal environment.Through the principal component analysis,the comprehensive index of land use layout that affects the urban thermal environment is obtained.Based on this,five land use layout types are divided and the corresponding thermal environment impact models are extracted and analyzed respectively.The study found that:(1)The high-temperature plaques in Hanyang District are relatively concentrated but fragmented,and are mainly used for industrial storage,commercial services,low-and medium-level residences,and transportation;the low-temperature plaques are large and the number is small,with large rivers and lakes Mainly;(2)Each area of Hanyang District has large differences in land use dominant function,landscape pattern,spatial structure,etc.,and affects the spatial characteristics of thermal environment landscape agglomeration,complexity,fragmentation,etc.;(3)As land use is integrated As the index rises,the core conflicts in the thermal environment corresponding to each type of land use layout gradually change from high and low temperature conflicts to an overall high temperature.Based on the comprehensive analysis of the thermal environment effects of urban land layout,the problems of urban thermal environment in Hanyang District are proposed,and the stratified key management and control,classified targeted control,and partition differentiation-guided optimization of land use layout are proposed to improve the city systematically Provide reference for thermal environment. |
