Study on the urban residential public space planning strategies based on the improvement of immune level in severe cold area

The importance of body immune level in the treatment of novel coronavirus pneumonia caused by COVID-2019 has been confirmed. Therefore, normal immune level plays an important role in dealing with acute infectious diseases and long-term health management. Active urban residential public space environment helps human body maintain normal immune level through promoting physical activity and helping keep healthy mood, which is confirmed by large quantities of related studies. However, for a city located in a cold and high latitude area, on one hand, severe cold climate will have an significant impact on people’s immune level itself. For example, low temperature in winter increases the body's metabolic oxygen demand and reduces the activity of immune cells, thus reducing the body's ability to resist pathogenic microorganisms, at the same time, the lower temperature in winter makes the virus more stable, such as influenza virus HIN1, SARS, so infectious diseases happen much more easily in winter. Also, experts point out the novel coronavirus pneumonia is associated with an increase in the relative mortality rate in cold and high latitude area. On the other hand, severe cold climate will have an significant impact on urban residential public space’s promoting utility on people’s immune level. It is mainly manifested in the negative effects on residents' outdoor physical activity participation and emotional psychological cognition through the accessibility of urban built environment, safety and comfort, landscape pleasure, etc. The quantity of literature about relationship between people’s immune level and urban open space under severe cold climate is rare. Based on some qualitative research and in situ measurement methods, the paper will 1) Analysis the cold climate’s negative effects on people’s immune level and urban residential public space, forming a action relationship framework between people’s immune level and urban residential public space under the background of severe cold climate; 2) Develop some empirical research through field survey on climate measurement and structured interview; 3) Based on the empirical research results, advancing some planning strategies on urban residential public space based on immune level improvement; The research results can optimize the relevant planning indicators and design principles, promote the formation of a positive urban residential environment in severe cold area, and provide empirical basis for the urban material space planning from the perspective of immune level improvement in severe cold area.