Study On The Thermal Comfort Effect Of Roof Garden Vegetation In Winter And Summer In Cold Region

High-speed urbanization has led to urban environmental problems,such as "urban heat island effect",and as a landscape element of one of the micro-regulation effect,gradually aroused the concern of researchers..Build roof garden is one of the main methods to solve this problem.The thermal comfort of Roof garden is of great significance to the development of urban outdoor public space.This paper selects the three floor of the building science and Engineering Research Center of Harbin Institute of Technology of science and technology,the campus of the second campus of Roof garden,using the method of comparative analysis and field measurement data,to explore the influence of Roof garden vegetation tree species and planting patterns on th ermal comfort,to the Roof garden in cold area China vegetation species preferred to provide qualitative and quantitative basis.First,The seasonal characteristics of Harbin were analyzed relative basic research.This paper analyzes the factors affecting the thermal comfort,such as the tree species,the geometric shape of the vegetation and the greening form of vegetation in the Roof garden of the cold area.According to the typical layout of the roof garden,Space geometry,the underlying material,green mode,five test points: Select the Roof garden five test points as measured object,selected in representative of the Roof garden 5 commonly used vegetation species: Sedum spectabile;Dianthus;gold leaf ulmus;Hosta ventricosa;Piceawilsonii;P.thomsoni.Was selected as a sample.It is measured in summer(August)and winter(November),30 minutes every 3 days from 8:00 to 17:00 as a period.In summer,the diurnal variation of microclimate conditions,in which five species of trees and major roof gardens are located in the air temperature,humidity,wind speed and solar radiation intensity properties.Finally,data analysis.According to the test data,this paper(1)analyzes the adjustment of different vegetation types in the main roof garden using SPSS software,which is a kind of temperature,humidity,wind speed,solar radiation and thermal comfort microclimate PET,and is optimized for comfort Provide the corresponding tree species selection.(2)Using SPSS software to explain the biological factors such as vegetation height,crown width,canopy density,branch point and so on,and the relationship between the above four kinds of microclimate elements,the biological characteristics of different vegetation species were explained Sexual,thermal comfort.Ef fects of Different Planting Methods on Different Effects of Thermal Comfort(PET)on Microclimate,The effects of different tree species on thermal comfort were compared in order to find the most suitable vegetation species.