Particle size distribution and total suspended solid concentrations in urban surface runoff
文献类型：期刊论文
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| 作者 | Zhao, Hongtao ; Ma, Yukun; Fang, Jinxiu; Hu, Lian; Li, Xuyong
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| 刊名 | SCIENCE OF THE TOTAL ENVIRONMENT
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| 出版日期 | 2022-04-01 |
| 卷号 | 815期号:0页码:152533 |
| 关键词 | ROAD-DEPOSITED SEDIMENT WASH-OFF SOURCE APPORTIONMENT POLLUTANT BUILDUP STORMWATER RUNOFF RAINFALL-RUNOFF STREET DUST LAND USES METALS LOADS |
| ISSN号 | 0048-9697 |
| 英文摘要 | An in-depth understanding of particle size distribution as well as total suspended solids (TSS) in surface runoff is essential for managing urban diffuse pollution. In this study, field experiments and model simulation were undertaken to explore and confirm the dynamic runoff behaviour of TSS and their influencing factors. Field observation results showed that samples with high TSS concentrations contained coarser particles (>100 mu m) during three natural rainfall events. Particle size distribution as well as road-deposited sediments (RDS) amount before and after these rainfall events also confirmed that a higher percentage of washed-off coarser particles resulted in higher TSS concentrations in surface runoff water. The impacts of rainfall characteristics, urban-rural gradients, surface roughness, and climate difference on particle distribution as well as TSS concentration were analyzed using the wash-off formula of particle size. These factors mainly affected the contribution rate of RDS to TSS by altering particle size composition; rates ranged from 4% to 44% under different rainfall characteristics. The critical particle size (<100 mu m) was developed according to the mass percentage of particles with different sizes in RDS and TSS. Our results can provide a simple and effective way of assessing RDS contribution to TSS in surface runoff. |
| 源URL | [https://ir.rcees.ac.cn/handle/311016/47310]  |
| 专题 | 生态环境研究中心_城市与区域生态国家重点实验室 |
| 通讯作者 | Li, Xuyong |
| 作者单位 | 1.Chinese Acad Sci, State Key Lab Urban & Reg Ecol, Res Ctr Ecoenvironm Sci, Beijing 100085, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 3.Beijing Normal Univ, Sch Environm, State Key Lab Water Environm Simulat, Beijing 100875, Peoples R China 4.Peking Univ, Coll Environm Sci & Engn, Beijing 100871, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhao, Hongtao,Ma, Yukun,Fang, Jinxiu,et al. Particle size distribution and total suspended solid concentrations in urban surface runoff, Particle size distribution and total suspended solid concentrations in urban surface runoff.pdf[J]. SCIENCE OF THE TOTAL ENVIRONMENT,2022,815(0):152533. |
| APA | Zhao, Hongtao,Ma, Yukun,Fang, Jinxiu,Hu, Lian,&Li, Xuyong.(2022).Particle size distribution and total suspended solid concentrations in urban surface runoff.SCIENCE OF THE TOTAL ENVIRONMENT,815(0),152533. |
| MLA | Zhao, Hongtao,et al."Particle size distribution and total suspended solid concentrations in urban surface runoff".SCIENCE OF THE TOTAL ENVIRONMENT 815.0(2022):152533. |
入库方式： OAI收割
来源：生态环境研究中心
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