Remote Sensing Monitoring And Comprehensive Evaluation Of Green Liveable Urbanization In Zhengzhou

In this paper,Landsat series satellite remote sensing images are used as data sources,and the atmospheric correction method is used to inverse show the surface temperature of Zhengzhou city in the four phases of 2000,2005,2010 and 2017.Using decision tree classification to accurately find out the basic information of different land use types in the study area;Based on the 0.1m panchromatic image taken by aerial photography and the 0.5m panchromatic image taken by WorldView-2 satellite,the status quo of green space and the interpretation of green space coverage are carried out through visual interpretation.The grade distribution and spatial structure measurement of urban green space landscape patches in the five rings in the research area are studied and analyzed with the support of GIS,and the urban green space landscape is comprehensively evaluated according to the urban gradient.Based on remote sensing images and electronic maps,the expansion of high-density buildings in four periods was studied and analyzed from the aspects of direction,speed,intensity and shape by using the spatial superposition analysis function of Gis.Through the analysis of Zhengzhou thermal environment distribution map and urban high-density building area spatial expansion map by octagonal circle cutting,the change of urban expansion with thermal environment is clearly defined,and it is found that the change of thermal environment is basically identical with the expansion.The noise pollution and population pressure intensity in the study area were extracted by innovative means.Combined with the indexes of heat island effect index,landscape pattern index,vegetation coverage and impervious surface coverage obtained from the study,the living environment quality of Zhengzhou city in four periods was analyzed and counted based on the traditional model,and analyzed and compared from the spatial dimension and the time dimension.From the perspective of different user groups,this paper compares the advantages and disadvantages of two evaluation systems based on statistical data and remote sensing data,improves the model and verifies its feasibility,so as to provide more intuitive and accurate standards for future urban planning and construction.