Quantifying the characteristics of particulate matters captured by urban plants using an automatic approach
文献类型：期刊论文
| 作者 | Yan, Jingli; Lin, Lin; Zhou, Weiqi; Han, Lijian; Ma, Keming |
| 刊名 | JOURNAL OF ENVIRONMENTAL SCIENCES
 |
| 出版日期 | 2016-01 |
| 卷号 | 39页码:259-267 |
| 关键词 | Particulate matter retention Urban vegetation Object-based classification Size and shape characteristics Source identification |
| 英文摘要 | It is widely accepted that urban plant leaves can capture airborne particles. Previous studies on the particle capture capacity of plant leaves have mostly focused on particle mass and/or size distribution. Fewer studies, however, have examined the particle density, and the size and shape characteristics of particles, which may have important implications for evaluating the particle capture efficiency of plants, and identifying the particle sources. In addition, the role of different vegetation types is as yet unclear. Here, we chose three species of different vegetation types, and firstly applied an object-based classification approach to automatically identify the particles from scanning electron microscope (SEM) micrographs. We then quantified the particle capture efficiency, and the major sources of particles were identified. We found (1) Rosa xanthina Lindl (shrub species) had greater retention efficiency than Broussonetia papyrifera (broadleaf species) and Pinus bungeana Zucc. (coniferous species), in terms of particle number and particle area cover. (2) 97.9% of the identified particles had diameter <10 mu m, and 67.1% of themhaddiameter <= 2.5 mu m. 89.8% of the particles had smooth boundaries, with 23.4% of thembeing nearly spherical. (3) 32.4%-74.1% of the particles were generated from bare soil and construction activities, and 15.5%-23.0% were mainly from vehicle exhaust and cooking fumes. (C) 2015 The Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences. Published by Elsevier B.V. |
| 源URL | [http://ir.rcees.ac.cn/handle/311016/35644]  |
| 专题 | 生态环境研究中心_城市与区域生态国家重点实验室 |
| 推荐引用方式 GB/T 7714 | Yan, Jingli,Lin, Lin,Zhou, Weiqi,et al. Quantifying the characteristics of particulate matters captured by urban plants using an automatic approach[J]. JOURNAL OF ENVIRONMENTAL SCIENCES,2016,39:259-267. |
| APA | Yan, Jingli,Lin, Lin,Zhou, Weiqi,Han, Lijian,&Ma, Keming.(2016).Quantifying the characteristics of particulate matters captured by urban plants using an automatic approach.JOURNAL OF ENVIRONMENTAL SCIENCES,39,259-267. |
| MLA | Yan, Jingli,et al."Quantifying the characteristics of particulate matters captured by urban plants using an automatic approach".JOURNAL OF ENVIRONMENTAL SCIENCES 39(2016):259-267. |
入库方式： OAI收割
来源：生态环境研究中心
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