不同城市绿地类型对PM_(2.5)、PM_(10)以及TSP的消减效应研究  

Study on the Subtractive Effect of Different Urban Green Space Types on PM_(2.5),PM_(10) and TSP

作　　者：桂艳 王海洋[2] 陈红[2] 林立揩 GUI Yan;WANG Haiyang;CHEN Hong;LIN Likai

机构地区：[1]四川工商学院 [2]西南大学园艺园林学院 [3]重庆大学建筑城规学院

出　　处：《西部人居环境学刊》2021年第5期50-57,共8页Journal of Human Settlements in West China

基　　金：重庆市技术创新与应用专项重点资助项目(cstc2019jscx-gksb0269)。

摘　　要：一直以来,绿地系统都是城市户外公共活动、文化展示、景观美化等功能的重要载体。此外,基于景观生态学的绿地系统研究使其生态调节功能进一步强化。作为城市的主要户外公共空间,城市绿地的空气质量关乎整个城市居民的健康,虽然已有部分研究开始初步探索城市绿地在消减空气颗粒物上的作用,但仍缺乏更加系统性的对比研究,以揭示不同绿地类型中绿地率、植物群落结构等特征对空气颗粒物的不同消减效应。本文采用定量测定的方法,对重庆市典型的绿地类型进行全年的测试分析。研究表明:绿地率最高的公园绿地对于空气颗粒物的消减率最明显;在一年四季中,TSP在夏季的消减率最高,PM_(10)的消减率春季最高,PM_(2.5)的消减率冬季最高;在不同空气颗粒物的消减率对比分析中,各种城市绿地对TSP的消减率最高,能达到15%以上,对PM_(2.5)的消减率最低,在夏季甚至出现负值。由此可见,城市绿地对总悬浮颗粒物(TSP)和粗颗粒物(PM_(10))都具有很好的消减效果,但是在对细颗粒物(PM_(2.5))的消减效果则不明显。Green space system has always been an important carrier of urban outdoor public activities,cultural display,landscaping and other functions.In addition,the research on green space system based on landscape ecology further strengthens its ecological regulation function.As the main outdoor public space in the city,the air quality of urban green space is relevant to the health of the whole city residents.Although some studies have begun to preliminarily explore the role of urban green space in reducing air particles,there is still a lack of more systematic comparative studies to reveal the different subduction effects of different green space types,such as green rate and plant community structure,on air particles.However,with the further deterioration of the city’s air quality,the existing research has been insufficient to meet the current needs of urban development.China’s industrialization process is later than that of western countries,so its air quality problems will be as predictable as those in the West.Thus,to avoid a repeat,it is necessary to attach importance to the management of air quality while industrialization is developing rapidly.Of course,the most effective way is to control the source of pollution,but there are other things that we can do to improve air quality to a certain extent.The closest relation with this subject is the urban green space.This is a new mission of landscape architecture in the new era.It is also an important extension of this discipline.To break through the planning and design of urban green space with space as the only pursuit,more consideration should be given to different urban green spaces in improving urban air quality,especially in the reduction of air particles and other aspects of the positive role.What’more,it should be applied to the planning and design of urban green space.In this paper,the typical green space types in Chongqing are tested and analyzed by quantitative measurement.Studies have shown that:1)the reduction rate of airborne particles in park green s

关 键 词：城市绿地 空气颗粒物 PM_(2.5) PM_(10) TSP 

分 类 号：TU985.129[建筑科学—城市规划与设计]