Phytoplankton community composition, carbon sequestration, and associated regulatory mechanisms in a floodplain lake system
文献类型：期刊论文
| 作者 | Jia, Junjie1,2; Gao, Yang1,2; Sun, Kun2; Lu, Yao1,2; Wang, Jing2; Shi, Kun3 |
| 刊名 | ENVIRONMENTAL POLLUTION
 |
| 出版日期 | 2022-08-01 |
| 卷号 | 306页码:15 |
| 关键词 | Phytoplankton community Primary productivity Carbon sequestration potential Floodplain lake Carbon cycle |
| ISSN号 | 0269-7491 |
| DOI | 10.1016/j.envpol.2022.119411 |
| 通讯作者 | Gao, Yang(gaoyang@igsnrr.ac.cn) |
| 英文摘要 | Phytoplankton contribute approximately 50% to the global photosynthetic carbon (C) fixation. However, our understanding of the corresponding C sequestration capacity and driving mechanisms associated with each individual phytoplankton taxonomic group is limited. Particularly in the hydrologically dynamic system with highly complex surface hydrological processes (floodplain lake systems). Through investigating seasonal monitoring data in a typical floodplain lake system and estimation of primary productivity of each phytoplankton taxonomic group individually using novel equations, this study proposed a phytoplankton C fixation model. Results showed that dominant phytoplankton communities had a higher gross carbon sequestration potential (CSP) (9.50 +/- 5.06 Gg C each stage) and gross primary productivity (GPP) (65.46 +/- 25.32 mg C m(-2) d(-1)), but a lower net CSP (-1.04 +/- 0.79 Gg C each stage) and net primary productivity (NPP) (-5.62 +/- 4.93 mg C m(-3) d(-1)) than rare phytoplankton communities in a floodplain lake system. Phytoplanktonic GPP was high (317.94 +/- 73.28 mg C m(-2) d(-1)) during the rainy season and low (63.02 +/- 9.65 mg C m(-2) d(-1)) during the dry season. However, their NPP reached the highest during the rising-water stage and the lowest during the receding-water stage. Findings also revealed that during the rainy season, high water levels (p = 0.56**) and temperatures (p = 0.37*) as well as strong solar radiation (p = 0.36*) will increase photosynthesis and accelerate metabolism and respiration of dominant phytoplankton communities, then affect primary productivity and CSP. Additionally, water level fluctuations drive changes in nutrients (p = -0.57*) and metals (p = -0.68*) concentrations, resulting in excessive nutrients and metals slowing down phytoplankton growth and reducing GPP. Compared with the static water lake system, the floodplain lake system with a lower net CSP became a heterotrophic C source. |
| WOS关键词 | FRESH-WATER LAKE ; MARINE-PHYTOPLANKTON ; PRIMARY PRODUCTIVITY ; LEVEL FLUCTUATIONS ; WETLAND CHANGES ; GROWTH-RATES ; POYANG ; CHLOROPHYLL ; CHINA ; ZOOPLANKTON |
| 资助项目 | National Nature Science Foundation of China[41922003] ; National Nature Science Foundation of China[31988102] ; National Nature Science Foundation of China[41871080] |
| WOS研究方向 | Environmental Sciences & Ecology |
| 语种 | 英语 |
| WOS记录号 | WOS:000860792700005 |
| 出版者 | ELSEVIER SCI LTD |
| 资助机构 | National Nature Science Foundation of China |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/186414]  |
| 专题 | 中国科学院地理科学与资源研究所 |
| 通讯作者 | Gao, Yang |
| 作者单位 | 1.Univ Chinese Acad Sci, Coll Resources & Environm, Beijing 100049, Peoples R China 2.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Ecosyst Network Observat & Modeling, Beijing 100101, Peoples R China 3.Chinese Acad Sci, Nanjing Inst Geog & Limnol, State Key Lab Lake Sci & Environm, Nanjing 210008, Peoples R China |
| 推荐引用方式 GB/T 7714 | Jia, Junjie,Gao, Yang,Sun, Kun,et al. Phytoplankton community composition, carbon sequestration, and associated regulatory mechanisms in a floodplain lake system[J]. ENVIRONMENTAL POLLUTION,2022,306:15. |
| APA | Jia, Junjie,Gao, Yang,Sun, Kun,Lu, Yao,Wang, Jing,&Shi, Kun.(2022).Phytoplankton community composition, carbon sequestration, and associated regulatory mechanisms in a floodplain lake system.ENVIRONMENTAL POLLUTION,306,15. |
| MLA | Jia, Junjie,et al."Phytoplankton community composition, carbon sequestration, and associated regulatory mechanisms in a floodplain lake system".ENVIRONMENTAL POLLUTION 306(2022):15. |
入库方式： OAI收割
来源：地理科学与资源研究所
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