Study On The Influence And Optimization Of The Leisure Space Landscape Elements Of Lhasa Urban Park On Thermal Comfort

Lhasa is the capital of Tibet,which is located on the plateau in the southwest of China.It has special plateau climate characteristics,Urban parks are the main place for crowds to enter outdoor activities,and different landscape elements will affect the microclimate of the space,which in turn affects the comfort of the crowd in the outdoor space.This paper analyzes the landscape elements,microclimate and thermal comfort of Lhasa urban parks through basic research,field test and questionnaire interview in winter and summer,combined with the relevant knowledge theory of urban climatology and urban public space design.The impact relationship is intended to provide a reference for the construction of Lhasa city parks.There are five main parts in this thesis.The first and second chapters are method theory.Through background research and literature review,we can understand the research results and shortcomings in related fields.Secondly,based on the research results of predecessors,this paper introduces the research results of urban park lei.sure space,microclimate and thermal comfor and based on the unique climate characteristics,compiled historical meteorological data of Lhasa in recent years,,analyzed the climate characteristics of Lhasa,The third chapter is the current situation research and actual research,through the basic research to understand the distribution of Lhasa city park and the basic characterristics of landscape elements;understand the use of activities in Lhasa city park activities Furthermore,the design experiment was carried out.The typical landscape elements of Zongjiao Lukang Park were measured(15 in summer and 12 in winter),questionnaire interviews and user behavior habits were investigated in winter and summer.The fourth chapter analyzes the results of the survey in Chapter 3.Based on the results of the actual survey and the interview results,the comparative analysis of the landscape elements of 15 typical spaces is carried out.Corresponding to the relationship between landscape elements-microclimate-thermal comfort.Statistical analysis was carried out on the actual thermal sensation and thermal comfort calculation indicators,and the evaluation index and neutral temperature applicable to Lhasa were summarized.Finally,the research results are pushed to each measurement point to obtain the thermal comfort time and space distribution of typical landscape elements.The fifth chapter proposes a design strategy suitable for the leisure space of urban parks in Lhasa based on the spatial and temporal distribution of urban parks' thermal comfort,combined with the user's time preference of activities.It is expected to provide some reference for urban designers and builders.