| As a part of the city,the university campus is the main place for teachers and students to learn,communicate and rest.The quality of the campus environment has a great impact on the national education and urban development,urban environment.Based on the typical climate characteristics of Hangzhou area,taking the East Lake campus of Zhejiang agriculture and Forestry University as an example,this paper studies the comfort of the campus microclimate in the south of the Yangtze river.From the crowd behavior,climate factors,human comfort perspective,based on single climatic factor analysis as the foundation,combined with Spss19.0,Ray Man1.2 software,focus on activities space of lawn,square,Boardwalk,4 Avenue campus crowd microclimate and human comfort in experimental study.The main conclusions of this study are as follows:(1)Through a large number of literature review,summed up the domestic and international microclimate research overview.From its research site,it can be divided into parks,streets,squares,residential areas,these 4 closely related to people,relatively high degree of use of the place.And the campus environment microclimate and summarizes the present situation,the research on campus climate in China is more concentrated in the northwest,North and southwest,for the study of microclimate environment in Jiangnan region has a typical campus climate type is relatively less.This paper expounds the importance and necessity of studying the microclimate of campus environment.(2)In summer,plants have a significant effect of cooling and humidification.The cooling and humidifying effect of the plant structure of Joe + grass type was the most significant.In the hottest hours of the day,14:00,Joe + grass air temperature 0.9 degrees lower than 3.9 DEG C lower than the lawn,square,Joe + shrub + grass decreased by 4.6 DEG C.Joe + grass lawn high relative humidity than 4.6%RH,10.2%RH is higher than the square,high 4.8%RH + shrub + grass.The high temperature space is easy to appear at 13:00 to 15:00 in summer of Joe + irrigation and grass.The effect of Jo + irrigation + grass on wind speed was the most significant.In winter,the plant also has the effect of cooling and humidification,but its effect is weaker than in summer.(3)In the three seasons of winter,summer and spring,the air temperature in the square of hard paving field is higher than that of the lawn,the wooden trestle and the Forest Avenue.The square in 14:00 when the temperature is 2.8 DEG C higher than the summer grass,wood plank high 1.7 DEG,3.9 DEG C higher than the mall.The relative humidity of the square in the hard pavement is lower than that of the lawn,the wooden trestle and the Forest Avenue.In summer at 14:00 relative humidity than the low 5.6%RH wood plank lawn,low 2.4%RH,low 10.2%RH ratio avenue.The humidification effect of ground cover plants is more obvious in summer sun after sunset.No shading condition,the winter and summer two season wooden pavement site of boardwalk air temperature than the lawn,the avenue to the high relative humidity of wood,wooden footway pavement site was lower than that of the lawn,the avenue.(4)The different opening levels of space have different effects on the factors of the microclimate in the three seasons of winter,summer and spring.Closed space,semi open space relative to open space,can reduce wind speed.The average wind speed of the L8 point in the closed space in summer is lower than that of the semi open space L6,which is 0.62m/s lower than that of the open space S3.The higher the space is,the stronger the blocking effect of the wind speed.The open space with high spatial enclosure is beneficial to the comfort of the human body in winter.(5)In the summer,the solar altitude angle high solar radiation intensity,shading can effectively reduce the direct solar radiation,reduce the heat source,reducing temperature,helps the body comfort.In the summer peak period of solar radiation 12:00-13:00,full shade condition,solar radiation can block shade 87.1%~93.3%.In winter,the solar altitude angle is smaller,reducing the intensity of solar radiation,shade and further weaken the solar radiation,is not conducive to human comfort.At the same time because of evergreen and deciduous trees,evergreen and deciduous tree of good summer shade effect,summer shade is conducive to human comfort,winter deciduous trees for leaves,reduce the effect of shading,shading in winter is not conducive to human comfort,so the deciduous trees in winter and summer are conducive to human comfort. |
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