南京林业大学学报（自然科学版）2013，Vol.37Issue(1)：18-24,7.
城市带状绿地结构类型对空气质量的影响
Effects of the different structure of urban green belts on the air quality
摘要
Abstract
Taking four green belts with different internal constitution and five green belts with different canopy density a-long the west fourth ring road of Beijing as test objects, and using small-scale quantitative measurement method, this paper studied the effects of the different structure of urban green belts on the air quality in Beijing to provide scientific basis for the construction of urban green belts. The air anion concentration and bacteria rate were measured every two hours from 8 : 00 to 18:00 every day for continuous seven days. The results showed; (1) The green belts with internal constitution of tree-shrub-herbage and tree-herbage had a significant effect on the increase of air anion concentration and had a significant effect on the decrease of bacteria rate with internal constitution of tree-herbage (width 42 m, p < 0. 05). (2) When the canopy density reached 0.44, green belts had a significant effect on the increase of air anion concentration and an obvious effect on the decrease of bacteria rate(p < 0. 05 ) , and when the canopy density exceeded 0. 67, the effect was obvious and stable (width 42 m).关键词
城市带状绿地/垂直结构/郁闭度/空气负离子浓度/空气含菌量Key words
urban green belt/ internal constitution/ canopy density/ air anion concentration/ bacteria rate分类
建筑与水利引用本文复制引用
朱春阳,纪鹏,李树华..城市带状绿地结构类型对空气质量的影响[J].南京林业大学学报（自然科学版）,2013,37(1):18-24,7.基金项目
国家自然科学基金项目(30972416) （30972416）
中央高校基本科研业务费专项资金资助项目(52902-0900206040) （52902-0900206040）
