The loss of dissolved organic matter from biological soil crust at various successional stages under rainfall of different intensities: Insights into the changes of molecular components at different rainfall stages
文献类型：期刊论文
| 作者 | Wang, Hao1,2,3; Zhang, Qing-wei1,2,3; Chen, Guo1,2,3; Li, Xuan8; Wang, Qi-lin8; Gao, Li9; Wang, Jian1,2,3; He, Ding5,6,7; Li, Ming4 |
| 刊名 | WATER RESEARCH
 |
| 出版日期 | 2024-06-15 |
| 卷号 | 257页码:14 |
| 关键词 | Dissolved organic matter Biological soil crusts Runoff FT-ICR MS |
| ISSN号 | 0043-1354 |
| DOI | 10.1016/j.watres.2024.121719 |
| 英文摘要 | Biological soil crusts (BSCs) are typical covers in arid and semiarid regions. The dissolved organic matter (DOM) of BSCs can be transported to various aquatic ecosystems by rainfall-runoff processes. However, the spatiotemporal variation in quality and quantity of DOM in runoff remains unclear. Herein, four kinds of runoff plots covered by four successional stages of BSCs were set up on slopes, including bare runoff plot (BR), cyanobacteria crust covered runoff plot (CR), mixed crust covered runoff plot (MIR), and moss crust covered runoff plot (MOR). The quantity and quality of DOM in runoff during rainfall was investigated based on the stimulated rainfall experiments combined with optical spectroscopy and ultra-high resolution mass spectrometry analyses. The results showed that the DOM concentrations (i.e., 0.30 to 45.25 mg L-1) in runoff followed the pattern of MOR>MIR>CR>BR, and they were exponentially decreased with rainfall duration. The DOM loss rate of BR (8.26 to 11.64 %) was significantly greater than those of CR, MIR, and MOR (0.84 to 3.22 %). Highly unsaturated compounds (HUCs), unsaturated aliphatic compounds (UACs), saturated compounds (SCs), and peptide-like compounds (PLCs) were the dominated compounds of the water extractable DOM from the original soils. Thereinto, PLCs and UACs were more easily leached into runoff during rainfall. The relatively intensity of HUCs in runoff generally decreased with rainfall duration, while the relatively intensities of UACs, PLCs, and SCs slightly increased with rainfall duration. These findings suggested that the DOM loss rate was effectively decreased with the successional of BSCs during rainfall; meanwhile, some labile compounds (e.g., PLCs and UACs) were transported into various aquatic ecosystems by rainfall-runoff processes. |
| 资助项目 | National Natural Science Foundation of China[42107362] ; National Natural Science Foundation of China[42007061] ; National Natural Science Foundation of China[42222061] ; National Natural Science Foundation of China[42377332] ; Research Grants Council of the Hong Kong Special Administrative Region, China[AoE/P-601/23-N] ; Research Grants Council of the Hong Kong Special Administrative Region, China[26300822] ; Center for Ocean Research in Hong Kong and Macau (CORE) |
| WOS研究方向 | Engineering ; Environmental Sciences & Ecology ; Water Resources |
| 语种 | 英语 |
| WOS记录号 | WOS:001241569000001 |
| 出版者 | PERGAMON-ELSEVIER SCIENCE LTD |
| 源URL | [http://119.78.100.198/handle/2S6PX9GI/41631]  |
| 专题 | 中科院武汉岩土力学所 |
| 通讯作者 | He, Ding; Li, Ming |
| 作者单位 | 1.Minist Educ, Yangling 712100, Shaanxi, Peoples R China 2.Northwest A&F Univ, Inst Soil & Water Conservat, Coll Soil & Water Conservat Sci & Engn, State Key Lab Soil Eros & Dryland Farming Loess Pl, Yangling 712100, Shaanxi, Peoples R China 3.Chinese Acad Sci, Res Ctr Soil & Water Conservat & Ecol Environm, State Key Lab Soil Eros & Dryland Farming Loess Pl, Minist Educ, Yangling 712100, Shaanxi, Peoples R China 4.Northwest A&F Univ, Coll Nat Resources & Environm, Yangling 712100, Shaanxi, Peoples R China 5.Hong Kong Univ Sci & Technol, Dept Ocean Sci, Hong Kong, Peoples R China 6.Hong Kong Univ Sci & Technol, Ctr Ocean Res Hong Kong & Macau, Hong Kong, Peoples R China 7.Chinese Acad Sci, Inst Rock & Soil Mech, State Key Lab Geomech & Geotech Engn, Wuhan 430071, Peoples R China 8.Univ Technol Sydney, Ctr Technol Water & Wastewater, Sch Civil & Environm Engn, Ultimo, NSW 2007, Australia 9.Victoria Univ, Inst Sustainable Ind & Liveable Cities, POB 14428, Melbourne, Vic 8001, Australia |
| 推荐引用方式 GB/T 7714 | Wang, Hao,Zhang, Qing-wei,Chen, Guo,et al. The loss of dissolved organic matter from biological soil crust at various successional stages under rainfall of different intensities: Insights into the changes of molecular components at different rainfall stages[J]. WATER RESEARCH,2024,257:14. |
| APA | Wang, Hao.,Zhang, Qing-wei.,Chen, Guo.,Li, Xuan.,Wang, Qi-lin.,...&Li, Ming.(2024).The loss of dissolved organic matter from biological soil crust at various successional stages under rainfall of different intensities: Insights into the changes of molecular components at different rainfall stages.WATER RESEARCH,257,14. |
| MLA | Wang, Hao,et al."The loss of dissolved organic matter from biological soil crust at various successional stages under rainfall of different intensities: Insights into the changes of molecular components at different rainfall stages".WATER RESEARCH 257(2024):14. |
入库方式： OAI收割
来源：武汉岩土力学研究所
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