【摘要】 通过研究城市大气污染自净化机制以及风与城市绿地间的相互作用机制,探索城市绿地生态机理。研究表明,城市绿地生态机理一方面是绿地植物对污染物的吸收净化,另一方面是绿地与城市环流共同作用稀释过滤城市大气污染物。进一步研究表明,基于绿地生态机理,绿带环绕的组团式形态是一种较为理想的城市空间形态,城市外围紧密布局城郊绿地,组团中心为“绿心”,居住区环绕“绿心”布局。组团的规模应根据各城市的具体现状确定,绿带的宽度要适宜。该城市空间形态能协助实现城市空气污染自净化过程,保障城市生态环境。更多还原

【Abstract】 The correlationship between natural purification of the air and urban green space is explored,and the ecological mechanism of green space is explained.It is shown that green plants can absorb and filtrate the pollutants from the air,on the other hand,the existence of the green spaces can promote the air circulation to dilute the pollutants in the air.Further research suggests that a group of separated urban areas surrounded by green belts would be a kind of more ideal urban spatial form.Suburban green space is distributed around the city.Within the city,there is green center in each separated urban area.The residential districts are distributed around the green center.The dimension of the separated urban area should depend on the urban practical conditions,and the width of the green belt should be reasonable.Such urban form could contribute to the air purification and the improvement of the ecological environment of the city.更多还原