Abstract
Air pollution has increased in the last decade in China. Urban green infrastructure, such as trees, could help to mitigate air pollution by the dry deposition process. The aim of this paper is to develop an assessment method for improving air quality by appropriate urban green infrastructure for high density urban environment in north China. Based on a literature review of relevant researches, an evaluation method of PM10 removal has been improved.
Highlights
The question ‘how much green spaces should a city have?’ has been asked since the 1920s, but the idea of urban green spaces became more important and popular after World War II
The aim of this paper is to develop an assessment method for improving air quality by appropriate urban green infrastructure for high density urban environment in north China
One key aim of this study is to explore the potential of nature-based solutions, for example Urban Green Infrastructure(UGI)[16,17] for air pollutant removal for high-rise buildings
Summary
The question ‘how much green spaces should a city have?’ has been asked since the 1920s, but the idea of urban green spaces became more important and popular after World War II. Malmo Green Factor has been designed and used in an international housing exposition, called ‘The Sustainable City of Tomorrow’ or Bo01 held in Malmo in 2001[10] Based on these green factors, green plot ratio (GPR) has been developed and chosen for this research to evaluate Urban Green Infrastructures (UGI). GPR is an appropriate tool to be used in the model of evaluating plants in urban air pollution removal It could act as a variable value in the model to show how different levels of Urban Green Infrastructures (UGI) affect air quality. 2. The model of quantifying air pollution mitigation The model aims to develop a new process to evaluate different types of UGI and their proportion. Data is required for each step, which could be collect in many ways, such as satellite images and local weather stations
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