High stability of autochthonous organic matter in inland aquatic ecosystems
文献类型：期刊论文
| 作者 | Xia, Fan1,2,3; Liu, Zaihua1,3,4; Zhao, Min1,3; He, Haibo1; He, Qiufang5,6,7; Lai, Chaowei1; He, Xuejun1,2,3; Ma, Zhen1; Wu, Yang1; Ma, Song1 |
| 刊名 | JOURNAL OF HYDROLOGY
 |
| 出版日期 | 2023-12-01 |
| 卷号 | 627页码:11 |
| ISSN号 | 0022-1694 |
| 关键词 | Recalcitrant dissolved organic matter CDOM Inland carbon sink Sediment |
| DOI | 10.1016/j.jhydrol.2023.130407 |
| 通讯作者 | Liu, Zaihua(liuzaihua@vip.gyig.ac.cn) |
| 英文摘要 | Recalcitrant dissolved organic matter (RDOM) is a key component of ocean carbon sinks and it can be preserved in seawater for thousands of years. However, the fate of RDOM derived from the primary production in inland lake is unclear. In this study of Erhai lake in China, used the combination of delta C-13, carbon/nitrogen (C/N) ratio, and optical spectroscopy analyses to constrain the variation of organic matter in the vertical direction (i.e., lake water -> trap sediments -> surface sediments -> core sediments), to trace the burial process of RDOM. Two autochthonous components (C1, C2) and two allochthonous components (C3, C4) were identified in the water. High concentrations of C2 in winter and spring indicate that these two seasons provide favourable burial conditions for autochthonous dissolved organic matter. Three autochthonous components (C1, C2, C5) and three allochthonous components (C3, C4, C6) were identified in the sediments. The contributions of autochthonous organic matter were similar to 49.9 +/- 5.84 % (based on PARAFAC analysis) and similar to 56.7 +/- 5.62 % (based on the C/N ratio) in the sediment trap samples; 43.4 +/- 8.84 % (based on PARAFAC analysis) and 40.8 +/- 14.26 % (based on the C/N ratio) in the surface sediments; and 44.5 +/- 14.4 % (based on PARAFAC analysis) and 48.4 +/- 6.04 % (based on the C/N ratio) in the core sediments. Additionally, C2, which is the autochthonous component after microbial mineralisation, was preserved as a significant part of the RDOM in the water. Our results suggest that the mineralisation of autochthonous organic matter (OM) in the core sediments did not promote bacterial mineralization, and that the burial of OM on long timescales dependents primarily on its concentration rather than on its origin. Our results provide a new perspective for studying the stability of autochthonous OM and highlight a new direction for the study of the carbon sink of inland lakes. |
| WOS关键词 | C/N RATIOS ; CARBON ; LAKE ; SEDIMENTS ; OCEAN ; RECONSTRUCTIONS ; SEQUESTRATION ; FLUORESCENCE ; BACTERIA ; INSIGHTS |
| 资助项目 | National Natural Science Foundation of China[42130501] ; National Natural Science Foundation of China[42141008] ; National Natural Science Foundation of China[42177248] ; National Natural Science Foundation of China[41921004] ; Strategic Priority Research Program of Chinese Academy of Sciences[XDB40020000] |
| WOS研究方向 | Engineering ; Geology ; Water Resources |
| 语种 | 英语 |
| 出版者 | ELSEVIER |
| WOS记录号 | WOS:001111930200001 |
| 资助机构 | National Natural Science Foundation of China ; Strategic Priority Research Program of Chinese Academy of Sciences |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/200531]  |
| 专题 | 中国科学院地理科学与资源研究所 |
| 通讯作者 | Liu, Zaihua |
| 作者单位 | 1.Chinese Acad Sci, Inst Geochem, State Key Lab Environm Geochem, Guiyang 550081, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 3.Chinese Acad Sci, Puding Karst Ecosyst Res Stn, Chinese Ecosyst Res Network, Puding 562100, Peoples R China 4.CAS Ctr Excellence Quaternary Sci & Global Change, Xian 710061, Peoples R China 5.Southwest Univ, Chongqing Key Lab Karst Environm, Chongqing 400700, Peoples R China 6.Southwest Univ, Sch Geog Sci, Chongqing 400700, Peoples R China 7.Chinese Acad Geol Sci, Inst Karst Geol, Key Lab Karst Dynam, Minist Nat Resources Guangxi, Guilin 541004, Peoples R China |
| 推荐引用方式 GB/T 7714 | Xia, Fan,Liu, Zaihua,Zhao, Min,et al. High stability of autochthonous organic matter in inland aquatic ecosystems[J]. JOURNAL OF HYDROLOGY,2023,627:11. |
| APA | Xia, Fan.,Liu, Zaihua.,Zhao, Min.,He, Haibo.,He, Qiufang.,...&Ma, Song.(2023).High stability of autochthonous organic matter in inland aquatic ecosystems.JOURNAL OF HYDROLOGY,627,11. |
| MLA | Xia, Fan,et al."High stability of autochthonous organic matter in inland aquatic ecosystems".JOURNAL OF HYDROLOGY 627(2023):11. |
入库方式： OAI收割
来源：地理科学与资源研究所
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