With the continuous development of the city,the urban heat island effect is becoming more and more significant,and various environmental problems have emerged.Roof greening has been applied as one of the important means to improve the coverage area of urban green space,alleviate the urban heat island effect and improve the urban ecological environment.In this paper,the roof greening within the second ring of the old town of Xuzhou City is taken as the research object,and the mitigation of urban heat island effect is taken as the research goal.Combined with the spatial distribution of wind and thermal environment in the old town of Xuzhou City and the construction quality of the research area,the roof greening is related to the thermal environment,wind environment and construction quality.Under the premise of the current limited economic development level,the core construction area of roof greening in the research area is analyzed and classified according to the heat island effect.Then,according to different building environment conditions,the building roof is divided into superior roof,suitable roof and extensive roof,and the roof greening is classified and graded.Trying to use scientific and reasonable roof greening layout to alleviate the heat island effect,improve the ecological environment so as to achieve the optimal allocation of resources.
urban heat island effectgreen roof systemthe old town of Xuzhou
NETL
NSTL
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