Optical properties as tracers of riverine dissolved organic matter biodegradation in a headwater tributary of the Yangtze
文献类型：期刊论文
| 作者 | Ni, Maofei1,2,3; Li, Siyue1
|
| 刊名 | Journal of Hydrology
 |
| 出版日期 | 2020 |
| 卷号 | 582 |
| ISSN号 | 00221694 |
| DOI | 10.1016/j.jhydrol.2019.124497 |
| 英文摘要 | The optical properties can characterize the chemical composition, bioavailability and origins of dissolved organic matter (DOM), and thus indicate its biodegradability in natural waters. However, there remains a large gap in how DOM optical properties (UV–visible and fluorescence spectra) trace and predict the dissolved organic carbon biodegradation (%BDOC) in river systems. Over a 56-day laboratory incubation experiment, we examined the variations of %BDOC and DOM optical properties in a headwater tributary of the upper Yangtze River. We found that DOC biodegradability was significantly higher in the tributaries (20 °C: 38.9 ± 19.8%; 30 °C: 58.6 ± 19.5%) than that in the main stem (20 °C: 26.1 ± 18.2%: 30 °C: 41.8 ± 16.3%) (p 254 and S275-295 decreased, while the S350-400, FI and BIX increased after the incubations, implying the synchronous biodegradation and production of young DOMs via microbial respiration. The %BDOC:DOC tightly linked to a254, S275-295, S350-400 and BIX, illustrating that optical properties could predict the riverine %BDOC. The findings demonstrated that optical properties could be regarded as the useful tracers of DOM biodegradation in river systems. © 2019 Elsevier B.V. |
| 语种 | 英语 |
| 源URL | [http://119.78.100.138/handle/2HOD01W0/9853]  |
| 专题 | 中国科学院重庆绿色智能技术研究院 |
| 作者单位 | 1.Key Laboratory of Reservoir Aquatic Environment, Research Center for Ecohydrology, Chongqing Institute of Green and Intelligent Technology, Chinese Academy of Sciences, Chongqing; 400714, China; 2.University of Chinese Academy of Sciences, Beijing; 100049, China; 3.College of Eco-Environmental Engineering, Guizhou Minzu University, Guiyang; 550025, China |
| 推荐引用方式 GB/T 7714 | Ni, Maofei,Li, Siyue. Optical properties as tracers of riverine dissolved organic matter biodegradation in a headwater tributary of the Yangtze[J]. Journal of Hydrology,2020,582. |
| APA | Ni, Maofei,&Li, Siyue.(2020).Optical properties as tracers of riverine dissolved organic matter biodegradation in a headwater tributary of the Yangtze.Journal of Hydrology,582. |
| MLA | Ni, Maofei,et al."Optical properties as tracers of riverine dissolved organic matter biodegradation in a headwater tributary of the Yangtze".Journal of Hydrology 582(2020). |
入库方式： OAI收割
来源：重庆绿色智能技术研究院
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