Abiotic degradation of field wheat straw as a notable source of atmospheric carbonyls in the North China Plain
文献类型：期刊论文
| 作者 | Li, Xuran; Zhang, Chenglong ; Zhao, Xiaoxi; Li, Yuanzhao; He, Zhouming; Liu, Pengfei; Liu, Chengtang; Liu, Junfeng; Zhang, Yuanyuan; Mu, Yujing
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| 刊名 | SCIENCE OF THE TOTAL ENVIRONMENT
 |
| 出版日期 | 2022-03-10 |
| 卷号 | 811期号:0页码:151366 |
| 关键词 | VOLATILE ORGANIC-COMPOUNDS OZONE FORMATION MAIZE FIELD CHEMISTRY EMISSIONS IMPACTS AIR SIMULATION PRODUCTS EXCHANGE |
| ISSN号 | 0048-9697 |
| 英文摘要 | Carbonyl compounds (carbonyls) play a crucial role in atmospheric chemistry, but their atmospheric sources are not fully identified. Here we show unexpectedly high carbonyl emissions from extensive field returning wheat straw over the North China Plain (NCP). The emission rates of carbonyls exhibit distinct diurnal variations with the noontime peak value of total carbonyls greater than 135 mu g.kg(-1) (dry straw weight).h(-)(1). The carbonyl emission is mainly attributed to biomass abiotic degradation processes that are affected by air temperature and sunlight intensity. Given that the photolysis of carbonyls is the major primary source of ROx radicals in the troposphere, carbonyl emissions would lead to increasing atmospheric oxidants. The mean daytime O-3 concentration over the NCP increases by 12.3% when coupling carbonyl emissions from wheat straw with the current emission inventory through the model simulation. It might be one of the important reasons for the occurrence of the most serious O-3 pollution in June when winter wheat is intensively harvested in the region. Further studies are warranted to explore the influence of field returning wheat straw on regional air quality. (C) 2021 Elsevier B.V. All rights reserved. |
| 源URL | [https://ir.rcees.ac.cn/handle/311016/47380]  |
| 专题 | 生态环境研究中心_大气污染控制中心 |
| 通讯作者 | Mu, Yujing |
| 作者单位 | 1.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 2.Chinese Acad Sci, Res Ctr Ecoenvironm Sci, Beijing 100085, Peoples R China 3.China Meteorol Adm, Key Lab Atmospher Chem, Beijing 100081, Peoples R China 4.Chinese Meteorol Adm, Inst Urban Meteorol, Beijing 100089, Peoples R China 5.Chinese Acad Sci, Inst Urban Environm, Ctr Excellence Urban Atmospher Environm, Xiamen 361021, Peoples R China |
| 推荐引用方式 GB/T 7714 | Li, Xuran,Zhang, Chenglong,Zhao, Xiaoxi,et al. Abiotic degradation of field wheat straw as a notable source of atmospheric carbonyls in the North China Plain[J]. SCIENCE OF THE TOTAL ENVIRONMENT,2022,811(0):151366. |
| APA | Li, Xuran.,Zhang, Chenglong.,Zhao, Xiaoxi.,Li, Yuanzhao.,He, Zhouming.,...&Mu, Yujing.(2022).Abiotic degradation of field wheat straw as a notable source of atmospheric carbonyls in the North China Plain.SCIENCE OF THE TOTAL ENVIRONMENT,811(0),151366. |
| MLA | Li, Xuran,et al."Abiotic degradation of field wheat straw as a notable source of atmospheric carbonyls in the North China Plain".SCIENCE OF THE TOTAL ENVIRONMENT 811.0(2022):151366. |
入库方式： OAI收割
来源：生态环境研究中心
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