Research On The Measurement And Adaptive Design Of Landscape Microclimate

At the moment of global warming,the urban climate is closely related to the development of the city and human activities.The landscape architecture is an important part of the city environment,and it is an effective way for people to be close to nature.So it plays an important role in improving the living environment and building a safe and comfortable outdoor space.In order to explore the influence factors of the microclimate environment in the summer and winter landscape of Hangzhou area and its influence on human thermal comfort,choosing the Nanjing military sanatorium of Hangzhou as the test site,and through field measurement of the different shade rates(using the sky visibility factor as the basis for grouping),different shading material and pavement material,and different spatial elements and spatial composition with 18 points of various microclimatic factors,analysing the diurnal variation of the thermal environment(solar radiation,air temperature,surface or surface temperature),humidity environment(relative humidity)and wind environment(wind speed and direction)in different landscape spaces,combined with the figure of Physiological Equivalent Temperature(PET)to evaluate human thermal comfort under different space.The results show that the thermal environment problems were more prominent in summer,and the human thermal comfort have significant negative correlation with the solar radiation in thermal environment factor,the full shade space is the most comfortable in summer,no shading space is more suitable for winter.Therefore,canopy shade design is very important for the construction of outdoor landscape architecture.When SVF is reduced to about 0.5,it can significantly reduce the solar radiation in space,and the reduction is up to 70% in summer.In the selection of shade materials,the appropriate increase in the proportion of deciduous plants in canopy shade and the use of other removable or open shading or temperature control facilities can effectively regulate the thermal comfort requirements of summer and winter.The humidity environment and the wind environment also have a certain regulating effect on the thermal comfort,the flow and dispersed waterscape design is more conducive to the improvement of the relative humidity in the air,and the open and transparent space is convenient for the formation and circulation of the wind.At last,putting forward relevant design improvement strategies for microclimate,in order to provide reference for the comfort improvement of outdoor landscape space in Hangzhou.