The Research On The Greening Around Buildings In Cold Climate City Based On Microclimate Environment Improvement

Urban development has always been the focus of scholars and builders' research within the globe,especially in the period when the global population is surging and the climate is changing drastically.China's urban construction has entered a stage of medium speed development,which generally shows the characteristics of high-density population concentration and huge urban volume?At the same time,there is a tendency for the population to further flow into existing or emerging large or super-large cities.Properly relocating the increased new population while achieving sustainable and healthy development of the city is an important prerequisite for maintaining economic,cultural and production development.Global warming has caused dramatic changes in climate,various disasters such as extreme weather,floods,droughts,typhoons and tsunamis threaten the human living environment.The urban built-up area continues to expand with a high-density and high-volume-ratio construction model.The high heterogeneity of the urban environment has caused changes in the internal and surrounding climate of the city that are significantly different from the climatic conditions,resulting in the deterioration of the external environment of urban buildings,such as urban heat island problems,urban ventilation problems and air quality problems,etc.In order to deal with environmental problems,meteorology,planning and architecture have conducted a large number of explorations and experiments under various climate scales,and established a series of strategies and measures.In the field of architectural,more exposure is to the microclimate scale environment.Building greening is an important way to improve the surrounding environment of buildings.Building greening research based on environmental improvement in urban built-up areas is an important research topic.This article takes Beijing as a research case to explore the effect of greening around buildings in urban built-up areas in cold regions on microclimate adaptation and environmental improvement.Research on the surrounding greening of buildings can improve the surrounding environment quality and provide a more comfortable external environment.The phenomenon of heat islands in the urban built-up area of Beijing is obvious,and the research on climate is no longer limited to dealing with the impact of cold climate in winter,and has been extended to how to improve the comfort of the thermal environment in summer.Through the actual measurement of winter and summer,the specific action methods and effects of plants around the building on temperature,radiation,humidity and wind speed in meteorological factors are explored.Aiming at the environmental problems of typical building types in urban built-up areas,through computer simulation technology,the trend of improving the environment through greening is explored,and an efficient and feasible greening organization is summarized.For more targeted analysis and research,through the ENVI-met software,a total of twenty-four groups of schemes were simulated for the high-rise single-unit and multi-layer enclosed building types in the winter and summer seasons,and the calculation and analysis The PMV coupled with ambient temperature,radiation,and wind speed under the group case,and the main action factors.Analyze and study the best plan to improve the microclimate environment in plant biological communities and layout forms.The first chapter of the paper mainly introduces the background,purpose and significance of the research,analyzes the relevant domestic and foreign research and constructs the framework of the paper.The second chapter mainly introduces the research methods and related basic theories,etc.The third chapter mainly introduces the exploration of the surrounding greening of the building through actual measurement.The mode of action for the environment in winter and summer;Chapters 4 and 5 verify the reliability of the simulation software ENVI-met through simulation experiments and simulate and analyze the designed schemes,summarizing suitable and feasible greening organization methods.