| Light absorption and emissions inventory of humic-like substances from simulated rainforest biomass burning in Southeast Asia | |
Tang, Jiao1,2,6; Li, Jun1,2; Mo, Yangzhi1,2; Khorram, Mahdi Safaei1,2; Chen, Yingjun3; Tang, Jianhui4 ; Zhang, Yanlin5; Song, Jianzhong1,2; Zhang, Gan1,2
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| 发表期刊 | ENVIRONMENTAL POLLUTION
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| ISSN | 0269-7491 |
| 2020-07-01 | |
| 卷号 | 262页码:10 |
| 关键词 | Brown carbon Mass absorption efficiency Emission factors Regional emissions |
| DOI | 10.1016/j.envpol.2020.114266 |
| 通讯作者 | Zhang, Gan([email protected]) |
| 英文摘要 | Humic-like substances (HULIS) are complex mixtures that are highly associated with brown carbon (BrC) and are important components of biomass burning (BB) emissions. In this study, we investigated the light absorption, emission factors (EFs), and amounts of HULIS emitted from the simulated burning of 27 types of regionally important rainforest biomass in Southeast Asia. We observed that HULIS had a high mass absorption efficiency at 365 nm (MAE(365)), with an average value of 2.6 +/- 0.83 m(2) g(-1) C. HULIS emitted from BB accounted for 65% +/- 13% of the amount of water-soluble organic carbon (WSOC) and 85% +/- 10% of the light absorption of WSOC at 365 nm. The EFs of HULIS from BB averaged 2.3 +/- 2.1 g kg(-1) fuel, and the burning of the four vegetation subtypes (herbaceous plants, shrubs, evergreen trees, and deciduous trees) exhibited different characteristics. The differences in EFs among the subtypes were likely due to differences in lignin content in the vegetation, the burning conditions, or other factors. The light absorption characteristics of HULIS were strongly associated with the EFs. The annual emissions (minimum-maximum) of HULIS from BB in this region in 2016 were 200-371 Gg. Furthermore, the emissions from January to April accounted for 99% of the total annual emissions of HULIS, which is likely the result of the burning activities during this season. The most significant emission regions were Cambodia, Burma, Thailand, and Laos. This study, which evaluated emissions of HULIS by simulating open BB, contributes to a better understanding of the light-absorbing properties and regional budgets of BrC in this region. (C) 2020 Elsevier Ltd. All rights reserved. |
| 资助机构 | Natural Science Foundation of China (NSFC) ; National Key R&D Program of China ; International Partnership Program of Chinese Academy of Sciences ; Guangdong Foundation for Program of Science and Technology Research |
| 收录类别 | SCI |
| 语种 | 英语 |
| 关键词[WOS] | SOLUBLE ORGANIC-MATTER ; PEARL RIVER DELTA ; OPTICAL-PROPERTIES ; BROWN CARBON ; CHEMICAL-CHARACTERIZATION ; MOLECULAR CHARACTERIZATION ; LIQUID-CHROMATOGRAPHY ; ATMOSPHERIC AEROSOLS ; ANGSTROM EXPONENT ; BLACK CARBON |
| 研究领域[WOS] | Environmental Sciences & Ecology |
| WOS记录号 | WOS:000533524300095 |
| 引用统计 | |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://ir.yic.ac.cn/handle/133337/29087 |
| 专题 | 中国科学院海岸带环境过程与生态修复重点实验室_海岸带环境过程实验室 中国科学院海岸带环境过程与生态修复重点实验室 |
| 通讯作者 | Zhang, Gan |
| 作者单位 | 1.Chinese Acad Sci, Guangzhou Inst Geochem, State Key Lab Organ Geochem, Guangzhou 510640, Peoples R China 2.Chinese Acad Sci, Guangdong Key Lab Environm Protect & Resources Ut, Guangzhou Inst Geochem, Guangzhou 510640, Peoples R China 3.Fudan Univ, Dept Environm Sci & Engn, Shanghai 200092, Peoples R China 4.Chinese Acad Sci, Yantai Inst Coastal Zone Res, Key Lab Coastal Environm Proc & Ecol Remediat, Yantai 264003, Peoples R China 5.Nanjing Univ Informat Sci & Technol, Yale NUIST Ctr Atmospher Environm, Nanjing 210044, Peoples R China 6.Univ Chinese Acad Sci, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Tang, Jiao,Li, Jun,Mo, Yangzhi,et al. Light absorption and emissions inventory of humic-like substances from simulated rainforest biomass burning in Southeast Asia[J]. ENVIRONMENTAL POLLUTION,2020,262:10. |
| APA | Tang, Jiao.,Li, Jun.,Mo, Yangzhi.,Khorram, Mahdi Safaei.,Chen, Yingjun.,...&Zhang, Gan.(2020).Light absorption and emissions inventory of humic-like substances from simulated rainforest biomass burning in Southeast Asia.ENVIRONMENTAL POLLUTION,262,10. |
| MLA | Tang, Jiao,et al."Light absorption and emissions inventory of humic-like substances from simulated rainforest biomass burning in Southeast Asia".ENVIRONMENTAL POLLUTION 262(2020):10. |
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