Study On Microclimate Of Small And Medium-Sized Water Park In Nanjing City

Urban public space is an indispensable outdoor space for urban residents,and the micro-climate within the city directly affects the majority of urban residents.The park as one of the city's main public open space,has an important impact on people's lives.At present,many domestic and foreign scholars have explored the influence of city parks on the micro-climate.However,the study on the micro-climate of the park with water as the main content is found lacking.In this paper,based on small and medium-sized water park as a starting point,the purpose of this study is to investigate the effects of various factors,especially water,on the micro-climate of small and medium sized urban water park.By exploring the micro-climate environment of small and medium sized urban water park in different seasons and effects of other factors on micro-climate.It is expected to provide new ideas and methods for small and medium-sized water park planning in Nanjing city.In the aspect of micro climate measurement,four small and medium-sized water parks in Nanjing are selected and field research are made as well.In the summer,autumn and winter,the measurement on the temperature and humidity is made,and the measurement time is 9:00-18:00.Analyzing the influence of different seasons,plant shade,surface properties and water on temperature and humidity.In the aspect of microclimate simulation,using ENVI-met software to simulate the micro-climate of Nan Hu Park.Analyzing the differences between the simulation and measured data.The daily variation of the simulated data is generally less than the measured data and less volatile.The results show that the ENVI-met software can reflect the outdoor microclimate well,but it has errors to an extent.For the complex environment,the ENVI-met software is not accurate.Finally,taking South Lake Park as an example,based on the analysis of the micro-climate characteristics of Nan Hu Park,aiming at the local location with poor micro-climate conditions,some suggestions and strategies for local modification and optimization of micro-climate methods are proposed.At last,the ENVI-met software focus on one part to simulate and verify.The main conclusions are as follows:(1)Need to consider a more comprehensive shade in outdoor environment.Strong solar radiation in summer,shading design is necessary,and plants shade has a good regulation of micro climate.The use of deciduous species can better meet the people's needs of winter sunshine.(2)Water has a moderating effect on micro-climate.The types of water,the pattern of water and the depth of water have different effects on micro-climate.Regulation of water on the micro-climate affected by environmental factors,including shade conditions,ventilation conditions,different seasons.(3)the effect of grassland on micro-climate is weak.In summer,the effect of cooling and humidification was weak,and the effect on the micro-climate influenced by the size and location of grassland.(4)The ENVI-met software can reflect the outdoor micro-climate well,but it has errors to an extent.For the complex environment,the ENVI-met software is not accurate.This paper provides the data support and theoretical basis for the design strategy of Nanjing small and medium-sized water park,supplementing application of ENVI-met software in landscape architecture design,providing the feasible reference theory of climatic design theory in landscape architecture.