Drawdown zone can shift a floodplain-lake system from a steady carbon source to an unsteady carbon sink
文献类型：期刊论文
| 作者 | Jia, Junjie1,2,3; Gao, Yang1,2; Sun, Kun1,2; Wang, Shuoyue1,2; Wang, Jing1; Li, Zhaoxi1,2; Lu, Yao1,2; Deng, Wanqian1,2; Ha, Xianrui1,2 |
| 刊名 | AGRICULTURAL AND FOREST METEOROLOGY
 |
| 出版日期 | 2022-12-15 |
| 卷号 | 327页码:13 |
| 关键词 | Carbon cycle Carbon pool Carbon storage Floodplain system Water level fluctuations |
| ISSN号 | 0168-1923 |
| DOI | 10.1016/j.agrformet.2022.109224 |
| 通讯作者 | Gao, Yang(gaoyang@igsnrr.ac.cn) |
| 英文摘要 | Studies have suggested that, globally, lake and reservoir systems constitute large carbon (C) sources. However, the drawdown zone where certain lake areas subject to water level fluctuations temporarily dry out, exposing sediment to the atmosphere, needs to be considered in lake-based C sink/source quantitative assessments. This study incorporates the drawdown zone into a lake-based quantitative approach to investigate C source/sink and C pool pattern stability in Poyang Lake and the surrounding wetland ecosystem, a typical floodplain-lake system case. By combining field sampling and remote sensing methods we found that from flooding to non-flooding periods, the C storage of Poyang Lake increased, leading to a steady C source. When accounting for the draw -down zone, however, the whole floodplain-lake system shifted from a C source to a C sink. Temperature drives changes in wetland C emissions and vegetation C production by affecting microbial organic carbon (OC) decomposition processes, to regulate this unsteady C source/sink lake system transformation processes (R2=0.97). Rainfall-driven water level and area changes can also influence C storage of the whole floodplain-lake system (R2=0.86). It is therefore necessary to integrate the drawdown zone into lake system qualification pro-cesses to ensure steady C source and sink states. |
| WOS关键词 | SOIL ORGANIC-CARBON ; WATER-QUALITY ; PHYTOPLANKTON ; WETLAND ; INLAND ; CHINA ; RATES |
| 资助项目 | National Nature Science Foundation of China ; CAS Project for Young Scientists in Basic Research ; [42225103] ; [42141015] ; [YSBR- 037] |
| WOS研究方向 | Agriculture ; Forestry ; Meteorology & Atmospheric Sciences |
| 语种 | 英语 |
| WOS记录号 | WOS:000880770600002 |
| 出版者 | ELSEVIER |
| 资助机构 | National Nature Science Foundation of China ; CAS Project for Young Scientists in Basic Research |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/187170]  |
| 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.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Ecosyst Network Observat & Modeling, Beijing 100101, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 3.Chinese Acad Sci, Nanjing Inst Geog & Limnol, Nanjing 210008, Peoples R China |
| 推荐引用方式 GB/T 7714 | Jia, Junjie,Gao, Yang,Sun, Kun,et al. Drawdown zone can shift a floodplain-lake system from a steady carbon source to an unsteady carbon sink[J]. AGRICULTURAL AND FOREST METEOROLOGY,2022,327:13. |
| APA | Jia, Junjie.,Gao, Yang.,Sun, Kun.,Wang, Shuoyue.,Wang, Jing.,...&Ha, Xianrui.(2022).Drawdown zone can shift a floodplain-lake system from a steady carbon source to an unsteady carbon sink.AGRICULTURAL AND FOREST METEOROLOGY,327,13. |
| MLA | Jia, Junjie,et al."Drawdown zone can shift a floodplain-lake system from a steady carbon source to an unsteady carbon sink".AGRICULTURAL AND FOREST METEOROLOGY 327(2022):13. |
入库方式： OAI收割
来源：地理科学与资源研究所
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