Isotope Constraints on the Sources of Particulate Organic Carbon in a Subtropical Deep Reservoir
文献类型：期刊论文
| 作者 | Zheng, Li-Wei; Li, Dawei2; Ding, Xiaodong3; Lee, Tsung-Yu; Zheng, Zhenzhen; Shiah, Fuh-Kwo; Zheng, Xufeng1; Hsu, Ting-Chang; Huang, Jr-Chuan; Kao, Shuh-Ji |
| 刊名 | JOURNAL OF GEOPHYSICAL RESEARCH-BIOGEOSCIENCES
 |
| 出版日期 | 2020 |
| 卷号 | 125期号:1页码:e2019JG005240 |
| ISSN号 | 2169-8961 |
| DOI | 10.1029/2019JG005240 |
| 英文摘要 | Reservoirs are active sites in the terrestrial environment in terms of carbon transformation and storage. Continuous reservoir construction reinforces the importance of such artificial storage; however, knowledge pertaining to the sources, cycling, and preservation of autochthonous/allochthonous particulate organic carbon (POC) in reservoirs remains incomplete. We monitored the flux and carbon isotope composition of sinking particles in a subtropical deep reservoir, and the results were compared with the isotopic signatures of potential POC sources (soil) and the sedimentary sink. We found that the typhoon-induced POC flux was transported laterally at intermediate water depths within the reservoir and that it contributed more than 70% of the annual deposition. An isotope ternary mixing model showed that over 87% of the POC preserved in sediments was allochthonous. Although the autochthonous POC from primary production was preferentially degraded, the preserved autochthonous POC (42 +/- 14 gC m(-2) yr(-1)) was comparable to the observed carbon dioxide uptake (35 gC m(-2) yr(-1)) by the reservoir, suggesting a high efficiency of carbon preservation in subtropical deep reservoirs. |
| 源URL | [http://ir.scsio.ac.cn/handle/344004/18588]  |
| 专题 | 南海海洋研究所_中科院边缘海地质重点实验室 |
| 作者单位 | 1.Acad Sinica, Res Ctr Environm Changes, Taipei, Taiwan 2.Xiamen Univ, Coll Ocean & Earth Sci, State Key Lab Marine Environm Sci, Xiamen, Peoples R China 3.Ocean Univ China, Key Lab Marine Chem Theory & Technol, Minist Educ, Qingdao, Peoples R China 4.North Minzu Univ, Sch Gen Educ, Yinchuan, Ningxia, Peoples R China 5.Natl Taiwan Normal Univ, Dept Geog, Taipei, Taiwan 6.Chinese Acad Sci, South China Sea Inst Oceanol, Key Lab Marginal Sea Geol, Guangzhou, Peoples R China 7.Natl Taiwan Univ, Dept Geog, Taipei, Taiwan |
| 推荐引用方式 GB/T 7714 | Zheng, Li-Wei,Li, Dawei,Ding, Xiaodong,et al. Isotope Constraints on the Sources of Particulate Organic Carbon in a Subtropical Deep Reservoir[J]. JOURNAL OF GEOPHYSICAL RESEARCH-BIOGEOSCIENCES,2020,125(1):e2019JG005240. |
| APA | Zheng, Li-Wei.,Li, Dawei.,Ding, Xiaodong.,Lee, Tsung-Yu.,Zheng, Zhenzhen.,...&Kao, Shuh-Ji.(2020).Isotope Constraints on the Sources of Particulate Organic Carbon in a Subtropical Deep Reservoir.JOURNAL OF GEOPHYSICAL RESEARCH-BIOGEOSCIENCES,125(1),e2019JG005240. |
| MLA | Zheng, Li-Wei,et al."Isotope Constraints on the Sources of Particulate Organic Carbon in a Subtropical Deep Reservoir".JOURNAL OF GEOPHYSICAL RESEARCH-BIOGEOSCIENCES 125.1(2020):e2019JG005240. |
入库方式： OAI收割
来源：南海海洋研究所
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