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J Environ Sci (China). 2015 Jan 1;27:33-41. doi: 10.1016/j.jes.2014.04.019. Epub 2014 Dec 3.

Relationship between types of urban forest and PM2.5 capture at three growth stages of leaves.

Author information

1
College of Soil and Water Conservation, Beijing Forestry University, Beijing 100083, China; Science and Technology Department, Binh Duong Province, Viet Nam. Electronic address: nguyenthanhthao777@gmail.com.
2
College of Soil and Water Conservation, Beijing Forestry University, Beijing 100083, China. Electronic address: yuxinxiao333@126.com.
3
College of Nature Conservation, Beijing Forestry University, Beijing 100083, China.
4
College of Soil and Water Conservation, Beijing Forestry University, Beijing 100083, China.

Abstract

Particulate matter diameter ≤ 2.5 μm (PM2.5) causes direct harm to human health. Finding forms of urban forest systems that with the ability to reduce the amount of particulate matter in air effectively is the aim of this study. Five commonly cultivated kinds of urban forest types were studied in Beijing city at three stages of leaf growth. Results show that the urban forest system is capable of storing and capturing dust from the air. The types of shrubs and broadleaf trees that have the ability to capture PM2.5 from the air are most effective when leaves have fully developed. In the leafless season, the conifer and mixed tree types are the most effective in removing dust from the air. For all kinds of forest types and stages of leaf growth, the PM2.5 concentration is highest in the morning but lower in the afternoon and evening. Grassland cannot control particles suspended in the air, but can reduce dust pollution caused by dust from the ground blown by the wind back into the air.

KEYWORDS:

Growth stages of leaves; PM(2.5); Particulate matter; Type of urban forest

PMID:
25597660
DOI:
10.1016/j.jes.2014.04.019
[Indexed for MEDLINE]

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