High dissolved organic carbon deposition is buffered by surface soil in a headwater catchment of a subtropical plantation
文献类型：期刊论文
| 作者 | Song, Xianwei2,3; Lyu, Sidan3; Wang, Jing3; Sun, Kun3; Gao, Yang3,4; Wen, Xuefa1,3,4 |
| 刊名 | JOURNAL OF HYDROLOGY
 |
| 出版日期 | 2022-04-01 |
| 卷号 | 607页码:10 |
| 关键词 | Dissolved organic carbon Headwater catchment Dry and wet deposition Soil absorption Net ecosystem carbon balance |
| ISSN号 | 0022-1694 |
| DOI | 10.1016/j.jhydrol.2022.127557 |
| 通讯作者 | Lyu, Sidan(lvsidan@igsnrr.ac.cn) ; Wen, Xuefa(wenxf@igsnrr.ac.cn) |
| 英文摘要 | High atmospheric dry and wet deposition of dissolved organic carbon (DOC) may contribute to net ecosystem carbon balance (NECB), but the input and output fluxes of DOC and their transport processes in a catchment remain unclear. Here, to elucidate the importance of DOC in NECB from the view of Earth's critical zone, we measured the water fluxes of inputs (precipitation, throughfall, and stemflow) and outputs (soil leachate, surface flow, interflow, streamflow and groundwater) and their DOC concentrations in a subtropical plantation headwater catchment. Our results showed that dry DOC deposition from plant-derived dust and exudates (22,317 kg C km-2 yr- 1) was about 4.5 times higher than the wet DOC deposition from precipitation (4966 kg C km-2 yr- 1), and accounted for 3.88 and 0.86% of the net ecosystem C productivity (NEP) (5.75x105 kg C km-2 yr- 1), respectively. In comparison, DOC fluxes in stream and groundwater were 5912 and 3905 kg C km-2 yr- 1, indicating that soil-buffered DOC flux was 17,466 kg C km-2 yr- 1 and accounted for 3.04% of NEP. A positive correlation between DOC and pH and total dissolved solids in soil leachate indicated that the biophysical and chemical absorption bridged the interaction between soil minerals and organic carbon. Our results underline the importance of including plant-derived DOC deposition in carbon sink estimations in subtropical plantation headwater catchments. |
| WOS关键词 | FAGUS-SYLVATICA L. ; TERRESTRIAL ECOSYSTEMS ; SPATIAL VARIABILITY ; TEMPORAL STABILITY ; DOC RELEASE ; MATTER ; FOREST ; WATER ; THROUGHFALL ; LITTER |
| 资助项目 | National Natural Science Foundation of China[41830860] ; National Natural Science Foundation of China[42171035] ; National Natural Science Foundation of China[42077302] |
| WOS研究方向 | Engineering ; Geology ; Water Resources |
| 语种 | 英语 |
| WOS记录号 | WOS:000790493000008 |
| 出版者 | ELSEVIER |
| 资助机构 | National Natural Science Foundation of China |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/176955]  |
| 专题 | 中国科学院地理科学与资源研究所 |
| 通讯作者 | Lyu, Sidan; Wen, Xuefa |
| 作者单位 | 1.Univ Chinese Acad Sci, Beijing Yanshan Earth Crit Zone Natl Res Stn, Beijing 101408, Peoples R China 2.Guangxi Univ, Coll Forestry, State Key Lab Conservat & Utilizat Agrobioresourc, Guangxi Key Lab Forest Ecol & Conservat, Nanning 530004, Peoples R China 3.Chinese Acad Sci, Key Lab Ecosyst Network Observat & Modeling, Inst Geog Sci & Nat Resources Res, Beijing 100101, Peoples R China 4.Univ Chinese Acad Sci, Coll Resources & Environm, Beijing 101408, Peoples R China |
| 推荐引用方式 GB/T 7714 | Song, Xianwei,Lyu, Sidan,Wang, Jing,et al. High dissolved organic carbon deposition is buffered by surface soil in a headwater catchment of a subtropical plantation[J]. JOURNAL OF HYDROLOGY,2022,607:10. |
| APA | Song, Xianwei,Lyu, Sidan,Wang, Jing,Sun, Kun,Gao, Yang,&Wen, Xuefa.(2022).High dissolved organic carbon deposition is buffered by surface soil in a headwater catchment of a subtropical plantation.JOURNAL OF HYDROLOGY,607,10. |
| MLA | Song, Xianwei,et al."High dissolved organic carbon deposition is buffered by surface soil in a headwater catchment of a subtropical plantation".JOURNAL OF HYDROLOGY 607(2022):10. |
入库方式： OAI收割
来源：地理科学与资源研究所
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