The Establishment Of The Wedged Greenland System Of The Urban Area Of Beijing In View Of Climatic Specificity

The planning of urban Greenland system is a important part of the planning of city. At the time of the planning of urban Greenland system, we should take climatic specificity into account to make the Greenland system play a important role in urban climate.According to the system of roads,many cities in China use the green wedge system of Moscow.Now we should pay attention to climatic specificity.This paper analyzed abundant data of urban climate,stated the climatic benefit of urban green wedge and the climatic specificity of cities on different landscape.In addition,taking the urban area of Beijing for example,this paper proposed a strategy of the establishment of urban green wedge system in view of the climatic specificity,such as haze in winter and sandstorm in spring and scorching weather and heavy rainfall in summer.The results could be listed as follows:It is feasible to:①establish a green wedge from Baiwang Mountain, though Olympic Forest Park, to Dongzhimen,combined with Jingzhang Railway, Jingzang Highway and Central Street;②establish a system of green wedges in front of Xinshan Mountain,from Baiwang Mountain, though Xiangshan Mountain, to Badachu, combined with the Summer Palace, the Old Summer Palace, Sanshanwuyuan Greenway, Kunyu River, Nanhan River, diversion canal of Yongding River and Jingmen Raiway;③establish a green wedge,combined with Mentougou, Sanjiadian, Shougang, Yongding River and Garden Show Park.Establishing this urban green wedge system is beneficial to the improvement of city air quality in winter and spring and the relieve of scorching weather and the reduction of the risk of urban inland inundation in summer on the urban area of Beijing.