Automobile exhaust particles retention capacity assessment of two common garden plants in different seasons in the Yangtze River Delta using open-top chambers

被引：17

作者：

Zhou, Miao ^{[1
]}

Wang, Xiang ^{[2
]}

Lin, Xintao ^{[1
]}

Yang, Shan ^{[1
]}

Zhang, Jing ^{[1
]}

Chen, Jian ^{[1
]}

机构：

[1] Zhejiang A&F Univ, State Key Lab Subtrop Silviculture, Linan 311300, Peoples R China

[2] Ctr Forest Resource Monitoring Zhejiang Prov, Hangzhou 310020, Peoples R China

来源：

ENVIRONMENTAL POLLUTION | 2020年 / 263卷

基金：

中国国家自然科学基金;

关键词：

Evergreen broad-leaved greening plants; Dynamic change in particle retention; The saturation time of particle retention; Seasonal differences; Yangtze river delta; POLLUTION TOLERANCE INDEX; LEAF SURFACE; FOLIAR DUST; VEGETATION; PM2.5; DEPOSITION; EFFICIENCY; MORTALITY; CAPTURE; METALS;

D O I：

10.1016/j.envpol.2020.114560

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Particulate matter (PM) pollution is a serious environmental problem in most of the cities in the Yangtze River Delta region. Plants can effectively filter ambient air by adsorbing PM. However, only a few studies have paid attention to the dynamic changes and seasonal differences in particle retention capacities of plants under long-term pollution. In this study, we investigated the dynamic changes in particle retention capabilities of the evergreen, broad-leaved, greening plants-Euonymus japonicus var. aurea-marginatus and Pittosporum tobiradin spring and summer. We employed an open-top chamber to simulate the severity of the tail gas pollution. The results showed that, both the plants reached a saturated state in 18-21 days, under continuous exposure to pollution (daily concentration of PM2.5: 214.64 +/- 321.33 mu g.cm(-3)). This was 6-8 days longer than that in the field experiments. In spring, the maximum retention of total particulate matter per unit leaf area of E. japonicus var. aurea-marginatus and P. tobira was 188.47 +/- 3.72 mu g cm(-2) (18 days) and 67.63 +/- 2.86 mu g cm(-2) (21 days), respectively. In summer, E. japonicus var. aurea-marginatus and P. tobira reached the maximum retention of the particle on the 21st day, with a net increase of 94.10 +/- 3.77 mu g cm(-2) and 27.81 +/- 3.57 mu g cm(-2), respectively. Irrespective of season, the particle retention capacity of E. japonicus var. aurea-marginatus was higher than that of P. tobira, and it showed a better effect on reducing the concentration of fine particles in the atmosphere. The particle retention of the two plants was higher in spring than that in summer. E. japonicus var. aurea-marginatus displayed a significant difference in particle retention between the seasons, while P. tobira did not show much difference. These results will provide a foundation for future studies on the dynamic changes and mechanism of particle retention in plants and management practices by employing plants for particle retention in severely polluted areas. (c) 2020 Elsevier Ltd. All rights reserved.

引用

页数：9