Variation of Dissolved Organic Matter Chemistry in the Runoff From Slopes Covered With Biocrusts Under Rainfall: Insights From the Linkages Between the Optical and Molecular Composition Analyses
文献类型：期刊论文
| 作者 | Chen, Guo4; Wang, Hao4; Zhang, Qing-wei4; Geng, Ren5; Wang, Jian4; Yi, Yuan-bi1; Li, Ming2; He, Ding1,3 |
| 刊名 | LAND DEGRADATION & DEVELOPMENT
 |
| 出版日期 | 2024-10-17 |
| 页码 | 15 |
| 关键词 | biocrust dissolved organic matter molecular characteristics optical indices runoff |
| ISSN号 | 1085-3278 |
| DOI | 10.1002/ldr.5340 |
| 英文摘要 | Variation of dissolved organic matter (DOM) largely affects the regional and even global carbon cycle. Both optical techniques and ultra-high-resolution mass spectrometry have their advantages and disadvantages, and the combination of them can better track DOM cycles. However, the relationship between the optical and molecular characteristics of DOM in the runoff from slopes covered with biocrusts are still unclear. Therefore, optical techniques and Fourier transform ion cyclotron resonance mass spectrometry (FT-ICR MS) were combined to explore the DOM composition in the runoff from different runoff plots (i.e., bare runoff plot [BP], cyanobacterial crusts covered runoff plot [CP], mixed crusts covered runoff plot [MIP], moss crusts covered runoff plot [MOP]) under different rainfall intensities in the current study. The findings stated that the runoff from BP and CP exhibited a higher proportion of terrestrial DOM under heavy rainfall intensity (HRI), whereas DOM in the runoff from MIP and MOP were primarily controlled by microbial sources. The DOM unique molecules in the runoff from CP were more recalcitrant under HRI than those under light rainfall intensity (LRI), and these differences decreased with the increased with the succession stage of biocrusts. The results of aromaticity characterized by optical method and FT-ICR MS were generally consistent. Meanwhile, Spearman correlation analysis also indicated that the optical parameters can be utilized for the estimation of molecular characteristics and labile in the runoff from slopes covered with biocrusts after the necessary calibration of the correction between the optical and molecular parameters. |
| 资助项目 | National Natural Science Foundation of China ; 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] ; State Key Laboratory of Geomechanics and Geotechnical Engineering[SKLGME022008] ; HKUST ; [42477362] ; [42107362] ; [42377332] |
| WOS研究方向 | Environmental Sciences & Ecology ; Agriculture |
| 语种 | 英语 |
| WOS记录号 | WOS:001333141400001 |
| 出版者 | WILEY |
| 源URL | [http://119.78.100.198/handle/2S6PX9GI/42789]  |
| 专题 | 中科院武汉岩土力学所 |
| 通讯作者 | Wang, Hao |
| 作者单位 | 1.Hong Kong Univ Sci & Technol, Ctr Ocean Res Hong Kong & Macau, Dept Ocean Sci, Hong Kong, Peoples R China 2.Northwest A&F Univ, Coll Nat Resources & Environm, Yangling, Shaanxi, Peoples R China 3.Chinese Acad Sci, Inst Rock & Soil Mech, State Key Lab Geomech & Geotech Engn, Wuhan, Peoples R China 4.Northwest A&F Univ, Inst Soil & Water Conservat, Coll Soil & Water Conservat Sci & Engn, State Key Lab Soil Eros & Dryland Farming Loess Pl, Yangling, Shaanxi, Peoples R China 5.Nanjing Hydraul Res Inst, Sate Key Lab Hydrol Water Resources & Hydraul Engn, Nanjing, Jiangsu, Peoples R China |
| 推荐引用方式 GB/T 7714 | Chen, Guo,Wang, Hao,Zhang, Qing-wei,et al. Variation of Dissolved Organic Matter Chemistry in the Runoff From Slopes Covered With Biocrusts Under Rainfall: Insights From the Linkages Between the Optical and Molecular Composition Analyses[J]. LAND DEGRADATION & DEVELOPMENT,2024:15. |
| APA | Chen, Guo.,Wang, Hao.,Zhang, Qing-wei.,Geng, Ren.,Wang, Jian.,...&He, Ding.(2024).Variation of Dissolved Organic Matter Chemistry in the Runoff From Slopes Covered With Biocrusts Under Rainfall: Insights From the Linkages Between the Optical and Molecular Composition Analyses.LAND DEGRADATION & DEVELOPMENT,15. |
| MLA | Chen, Guo,et al."Variation of Dissolved Organic Matter Chemistry in the Runoff From Slopes Covered With Biocrusts Under Rainfall: Insights From the Linkages Between the Optical and Molecular Composition Analyses".LAND DEGRADATION & DEVELOPMENT (2024):15. |
入库方式： OAI收割
来源：武汉岩土力学研究所
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