| In the context of the rapid development of global urbanization,the urban heat island effect will not only affect the sustainable development of the city,but also seriously affect the health of residents.Therefore,the problem of urban heat island effect has been widely concerned and studied by experts and scholars at home and abroad.Among them,improving the urban thermal environment by adjusting the three-dimensional form of buildings is an important measure to alleviate the urban heat island effect.Taking Nanhu campus of China University of mining and technology as the research object,this thesis collects the annual urban thermal environment data in the research area by means of mobile observation,and makes a variety of statistical analysis between the urban thermal environment data and the three-dimensional form parameters of buildings in this area,The result is to obtain the influence law of three-dimensional form of buildings on urban thermal environment,and provide a certain theoretical basis for the research of urban thermal environment.The main conclusions of this thesis are as follows:(1)As for the surface temperature,generally speaking,the Sky view factor(SVF)is positively correlated with the surface temperature in summer and negatively correlated in winter.Building height width ratio,building height and vegetation coverage are negatively correlated with surface temperature in summer and positively correlated in winter.Among them,the energy state of the surface underlying surface is the key to determine the positive and negative correlation.In summer,the surface underlying surface mainly receives energy.At this time,the closed building space can reduce the surface temperature due to its strong shading effect.In winter,the surface underlying surface mainly releases energy.At this time,the closed space helps to reduce the loss of ground energy and increase the surface temperature.(2)For air temperature,Sky view factor(SVF)is positively correlated with air temperature in summer morning and noon,but the correlation is not significant in summer afternoon and evening and the whole winter.(3)In terms of relative humidity,local meteorological factors are the main influencing factors.Compared with surface temperature and air temperature,the influence of three-dimensional form of buildings on relative humidity is very small.(4)Among the six three-dimensional form of buildings indicators used in this study,Sky view factor(SVF)is the most sensitive to various thermal environment parameters because SVF can fully reflect the characteristics of building space compared with other indicators.(5)Among the four thermal environment parameters used in this study,the relationship between surface temperature and various three-dimensional form of buildings indexes is the most sensitive and the most suitable parameter for thermal environment research,followed by air temperature and relative humidity. |
