Temperature Thresholds of Pyrogenic Dissolved Organic Matter in Heating Experiments Simulating Forest Fires
文献类型：期刊论文
| 作者 | Zhang, Qiang3,4,5,7; Wang, Yinghui4,5,7; Guan, Ping6; Zhang, Peng4,5; Mo, Xiaohan8; Yin, Gege4,5; Qu, Bo6; Xu, Shujun6; He, Chen9; Shi, Quan9 |
| 刊名 | ENVIRONMENTAL SCIENCE & TECHNOLOGY
 |
| 出版日期 | 2023-11-02 |
| 卷号 | 57期号:45页码:17291-17301 |
| 关键词 | soil organic matter black carbon heating temperature thermogenic dissolved organic matter spectroscopic characteristics Fourier transform ion cyclotron resonance mass spectrometry |
| ISSN号 | 0013-936X |
| DOI | 10.1021/acs.est.3c05265 |
| 英文摘要 | Heating temperature (HT) during forest fires is a critical factor in regulating the quantity and quality of pyrogenic dissolved organic matter (DOM). However, the temperature thresholds at which maximum amounts of DOM are produced (TTmax) and at which the DOC gain turns into net DOC loss (TT0) remain unidentified on a component-specific basis. Here, based on solid-state C-13 nuclear magnetic resonance, absorbance and fluorescence spectroscopies, and Fourier transform ion cyclotron resonance mass spectrometry, we analyzed variations in DOM composition in detritus and soil with HT (150-500 degrees C) and identified temperature thresholds for components on structural, fluorophoric, and molecular formula levels. TTmax was similar for detritus and soil and ranged between 225 and 250 degrees C for bulk dissolved organic carbon (DOC) and most DOM components. TT0 was consistently lower in detritus than in soil. Moreover, temperature thresholds differed across the DOM components. As the HT increased, net loss was observed initially in molecular formulas tentatively associated with carbohydrates and aliphatics, then proteins, peptides, and polyphenolics, and ultimately condensed aromatics. Notably, at temperatures lower than TT0, particularly at TTmax, burning increased the DOC quantity and thus might increase labile substrates to fuel soil microbial community. These composition-specific variations of DOM with temperature imply nonlinear and multiple temperature-dependent wildfire impacts on soil organic matter properties. |
| WOS研究方向 | Engineering ; Environmental Sciences & Ecology |
| 语种 | 英语 |
| WOS记录号 | WOS:001105086500001 |
| 源URL | [http://ir.gig.ac.cn/handle/344008/79062]  |
| 专题 | 有机地球化学国家重点实验室 |
| 通讯作者 | Wang, Yinghui; Wang, Junjian |
| 作者单位 | 1.Guangzhou Inst Geochem, Chinese Acad Sci, Guangdong Hong Kong Macao Joint Lab Environm Pollu, Hong Kong 510640, Guangdong, Peoples R China 2.Carl von Ossietzky Univ Oldenburg, Helmholtz Inst Funct Marine Biodivers HIFMB, D-26129 Oldenburg, Germany 3.Harbin Inst Technol, Sch Environm, Harbin 150090, Peoples R China 4.Southern Univ Sci & Technol, Sch Environm Sci & Engn, State Environm Protect Key Lab Integrated Surface, Shenzhen 518055, Guangdong, Peoples R China 5.Southern Univ Sci & Technol, Guangdong Prov Key Lab Soil & Groundwater Pollut C, Shenzhen 518055, Guangdong, Peoples R China 6.Shenyang Agr Univ, Coll Biosci & Biotechnol, Shenyang 110866, Peoples R China 7.Carl von Ossietzky Univ Oldenburg, Inst Chem & Biol Marine Environm, D-26129 Oldenburg, Germany 8.Peking Univ, Sch Urban Planning & Design, Shenzhen Grad Sch, Shenzhen 518055, Guangdong, Peoples R China 9.China Univ Petr, State Key Lab Heavy Oil Proc, Beijing 102249, Peoples R China 10.Chinese Acad Sci, Guangzhou Inst Geochem, State Key Lab Organ Geochem, Guangdong Prov Key Lab Environm Protect & Resource, Hong Kong 510640, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhang, Qiang,Wang, Yinghui,Guan, Ping,et al. Temperature Thresholds of Pyrogenic Dissolved Organic Matter in Heating Experiments Simulating Forest Fires[J]. ENVIRONMENTAL SCIENCE & TECHNOLOGY,2023,57(45):17291-17301. |
| APA | Zhang, Qiang.,Wang, Yinghui.,Guan, Ping.,Zhang, Peng.,Mo, Xiaohan.,...&Wang, Junjian.(2023).Temperature Thresholds of Pyrogenic Dissolved Organic Matter in Heating Experiments Simulating Forest Fires.ENVIRONMENTAL SCIENCE & TECHNOLOGY,57(45),17291-17301. |
| MLA | Zhang, Qiang,et al."Temperature Thresholds of Pyrogenic Dissolved Organic Matter in Heating Experiments Simulating Forest Fires".ENVIRONMENTAL SCIENCE & TECHNOLOGY 57.45(2023):17291-17301. |
入库方式： OAI收割
来源：广州地球化学研究所
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