Surface microrelief induced by tillage management alters the pathway and composition of dissolved organic matter exports from soils to runoff during rainfall
文献类型：期刊论文
| 作者 | Wang, Hao2,3; Zhang, Qingwei2,3; Li, Xuan4; Yi, Yuanbi5,6; Wang, Qilin4; Gao, Li1; Wang, Jian2,3; He, Ding5,6,7; Li, Ming3 |
| 刊名 | WATER RESEARCH
 |
| 出版日期 | 2023-10-15 |
| 卷号 | 245页码:15 |
| 关键词 | Dissolved organic matter Sub-surface flow Tillage management Surface microrelief FT-ICR MS |
| ISSN号 | 0043-1354 |
| DOI | 10.1016/j.watres.2023.120554 |
| 英文摘要 | Rainfall-runoff process mobilizes considerable dissolved organic matter (DOM) from soils to aquatic systems via surface and sub-surface flow pathways. Microrelief induced by tillage management can alter this flow partitioning and thus likely affect the associated pathway and composition of DOM exports during rainfall. This study conducted rainfall simulation experiments, combined with three-dimensional fluorescence spectra analysis and Fourier transform ion cyclotron resonance mass spectrometry (FT-ICR MS) technology, to explore the effects of different surface microreliefs treatments on the quantity and composition of DOM exports at a plot scale. Four typical microrelief treatments (i.e., contour tillage (CP), longitudinal tillage (LP), artificial digging tillage (AP), and flat tillage (CK, as control)) were selected. Results showed that ratios of surface to sub-surface flow volume under four treatments were in order of LP (193:1)>CK (73:1)>AP (4.5:1)>CP (0.5:1). DOM concentrations in sub-surface flow (13.37 similar to 33.50 mg L-1) were 7 similar to 18 times of that in surface flow (0.03 similar to 4.56 mg L-1). The total export fluxes of DOM were 134, 139, 563, and 1214 mg m(-2) at LP, CK, AP, and CP treatments, respectively, with proportions of 8%, 17%, 82%, and 98% via sub-surface flow. Compared to surface flow, DOM molecular composition in sub-surface flow showed a significant feature of higher oxygen to carbon ratio, higher molecular weight, and lower hydrogen to carbon ratio. The findings indicated that microrelief with higher surface storage capacity tends to favor a large flux of DOM export, primarily via sub-surface flow, which might significantly affect the DOM cycling in the receiving aquatic ecosystems. |
| 资助项目 | National Natural Science Foundation of China[42107362] ; National Natural Science Foundation of China[51979236] ; National Natural Science Foundation of China[42007061] ; Research Grants Council of Hong Kong[ECS26300822] ; visiting scholars program of State Key Laboratory of Geomechanics and Geotechnical Engineering[SKLGME022008] ; Center for Ocean Research in Hong Kong and Macau (CORE) ; Key Research and Development Program of Shaanxi[2021SF-506] |
| WOS研究方向 | Engineering ; Environmental Sciences & Ecology ; Water Resources |
| 语种 | 英语 |
| WOS记录号 | WOS:001083624800001 |
| 出版者 | PERGAMON-ELSEVIER SCIENCE LTD |
| 源URL | [http://119.78.100.198/handle/2S6PX9GI/39650]  |
| 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.Victoria Univ, Inst Sustainable Ind & Liveable Cities, POB 14428, Melbourne, Vic 8001, Australia 2.Northwest A&F Univ, Inst Soil & Water Conservat, Coll Soil & Water Conservat Sci & Engn, Yangling 712100, Peoples R China 3.Northwest A&F Univ, Coll Nat Resources & Environm, Yangling 712100, Peoples R China 4.Univ Technol Sydney, Sch Civil & Environm Engn, Ctr Technol Water & Wastewater, Ultimo, NSW 2007, Australia 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 |
| 推荐引用方式 GB/T 7714 | Wang, Hao,Zhang, Qingwei,Li, Xuan,et al. Surface microrelief induced by tillage management alters the pathway and composition of dissolved organic matter exports from soils to runoff during rainfall[J]. WATER RESEARCH,2023,245:15. |
| APA | Wang, Hao.,Zhang, Qingwei.,Li, Xuan.,Yi, Yuanbi.,Wang, Qilin.,...&Li, Ming.(2023).Surface microrelief induced by tillage management alters the pathway and composition of dissolved organic matter exports from soils to runoff during rainfall.WATER RESEARCH,245,15. |
| MLA | Wang, Hao,et al."Surface microrelief induced by tillage management alters the pathway and composition of dissolved organic matter exports from soils to runoff during rainfall".WATER RESEARCH 245(2023):15. |
入库方式： OAI收割
来源：武汉岩土力学研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。