Knowledge Management System Of Guangzhou Institute of Geochemistry，CAS
Yin, Gege1,2; Guan, Ping3; Wang, Ying-Hui1,2; Zhang, Peng1,2; Qu, Bo3; Xu, Shujun3; Zhang, Gan4 ; He, Chen5; Shi, Quan5; Wang, Junjian1,2
| |
| Temporal Variations in Fire Impacts on Characteristics and Composition of Soil-Derived Dissolved Organic Matter at Qipan Mountain, China | |
| Source Publication | ENVIRONMENTAL SCIENCE & TECHNOLOGY
 |
| ISSN | 0013-936X |
| 2024-07-26 | |
| Volume | 58Issue:31Pages:13772-13782 |
| DOI | 10.1021/acs.est.4c00446 |
| Language | 英语 |
| WOS Research Area | Engineering ; Environmental Sciences & Ecology |
| Abstract | Dissolved organic matter (DOM), the most reactive fraction of forest soil organic matter, is increasingly impacted by wildfires worldwide. However, few studies have quantified the temporal changes in soil DOM quantity and quality after fire. Here, soil samples were collected after the Qipan Mountain Fire (3-36 months) from pairs of burned and unburned sites. DOM contents and characteristics were analyzed using carbon quantification and various spectroscopic and spectrometric techniques. Compared with the unburned sites, burned sites showed higher contents of bulk DOM and most DOM components 3 months after the fire but lower contents of them 6-36 months after the fire. During the sharp drop of DOM from 3 to 6 months after the fire, carboxyl-rich alicyclic molecule-like and highly unsaturated compounds had greater losses than condensed aromatics. Notably, the burned sites had consistently higher abundances of oxygen-poor dissolved black nitrogen and fluorescent DOM 3-36 months after the fire, particularly the abundance of pyrogenic C2 (excitation/emission maxima of <250/similar to 400 nm) that increased by 150% before gradually declining. This study advances the understanding of temporal variations in the effects of fire on different soil DOM components, which is crucial for future postfire environmental management. |
| Keyword | forest wildfires optical properties temporaldynamics pyrogenic dissolved organic matter nuclearmagnetic resonance spectroscopy ultrahigh-resolution massspectrometry |
| WOS ID | WOS:001279695800001 |
| Indexed By | SCI |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.gig.ac.cn/handle/344008/78205 |
| Collection | 有机地球化学国家重点实验室 |
| Corresponding Author | Wang, Junjian |
| Affiliation | 1.Southern Univ Sci & Technol, Guangdong Prov Key Lab Soil & Groundwater Pollut, State Environm Protect Key Lab Integrated Surface, Sch Environm Sci & Engn, Shenzhen 518055, Peoples R China 2.Southern Univ Sci & Technol, Sch Environm Sci & Engn, Guangdong Key Lab Soil & Groundwater Pollut Contr, Shenzhen 518055, Guangdong, Peoples R China 3.Shenyang Agr Univ, Liaoning Key Lab Biol Invas & Global Changes, Shenyang 110866, Liaoning, Peoples R China 4.Chinese Acad Sci, State Key Lab Organ Geochem & Guangdong Prov, Key Lab Environm Protect & Resources Utilizat, Guangzhou Inst Geochem, Guangzhou 510640, Peoples R China 5.China Univ Petr, State Key Lab Heavy Oil Proc, Beijing 102249, Peoples R China |
| Recommended Citation GB/T 7714 | Yin, Gege,Guan, Ping,Wang, Ying-Hui,et al. Temporal Variations in Fire Impacts on Characteristics and Composition of Soil-Derived Dissolved Organic Matter at Qipan Mountain, China[J]. ENVIRONMENTAL SCIENCE & TECHNOLOGY,2024,58(31):13772-13782. |
| APA | Yin, Gege.,Guan, Ping.,Wang, Ying-Hui.,Zhang, Peng.,Qu, Bo.,...&Wang, Junjian.(2024).Temporal Variations in Fire Impacts on Characteristics and Composition of Soil-Derived Dissolved Organic Matter at Qipan Mountain, China.ENVIRONMENTAL SCIENCE & TECHNOLOGY,58(31),13772-13782. |
| MLA | Yin, Gege,et al."Temporal Variations in Fire Impacts on Characteristics and Composition of Soil-Derived Dissolved Organic Matter at Qipan Mountain, China".ENVIRONMENTAL SCIENCE & TECHNOLOGY 58.31(2024):13772-13782. |
| Files in This Item: | There are no files associated with this item. | |||||
Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.
Edit Comment