Flux and source of dissolved inorganic carbon in a headwater stream in a subtropical plantation catchment
文献类型：期刊论文
| 作者 | Song Xianwei1,2; Lyu Sidan2; Sun Kun2; Gao Yang1,2; Wen Xuefa1,2,3 |
| 刊名 | JOURNAL OF HYDROLOGY
 |
| 出版日期 | 2021-09-01 |
| 卷号 | 600页码:10 |
| 关键词 | Dissolved inorganic carbon Carbon source Headwater stream Soil CO2 Carbonate weathering |
| ISSN号 | 0022-1694 |
| DOI | 10.1016/j.jhydrol.2021.126511 |
| 通讯作者 | Lyu Sidan(lvsidan@igsnrr.ac.cn) ; Wen Xuefa(wenxf@igsnrr.ac.cn) |
| 英文摘要 | Dissolved inorganic carbon (DIC) in headwater streams significantly contributes to the riverine CO2 emission to the atmosphere and oceans. However, understanding of the sources and mechanisms of DIC generation and mass balances of DIC flux in headwater streams at the scale of catchments remain poor and add to uncertainty in regional carbon estimates. In this study, the input and output of water fluxes and their chemical and isotopic compositions in a headwater stream were investigated from 2016 to 2019 in a subtropical plantation catchment. Our results showed that the headwater stream catchment experienced a net carbon loss of 262-4352 kg C km(-2) yr(-1) based on the water balance of annual precipitation, evapotranspiration, headwater stream and groundwater discharge, and change in soil water storage. The headwater stream exhibited comparable DIC flux (3561 +/- 933 kg C km(-2) yr(-1)) and higher DIC concentration (7.91 +/- 3.13 mg L-1) than precipitation (3662 +/- 682 kg C km(-2) yr(-1) and 2.63 +/- 1.22 mg L-1 , respectively). Differences in DIC concentration between precipitation and headwater stream were mainly controlled by soil CO2 dissolution, carbonate weathering, and their synergistic effects. Relative contributions to DIC fluxes in this headwater stream were 25.3 +/- 5.2% by precipitation, 47.3 +/- 6.2% by soil biological CO2 , and 27.4 +/- 7.3% by carbonate weathering. Our results indicated that the DIC-generating processes may result in an underestimation of soil biological CO2 efflux to the atmosphere. Further, soil carbonate weathering, and a net carbon loss at the scale of catchments may be overlooked in acid soils. |
| WOS关键词 | SOIL CARBON ; ISOTOPE FRACTIONATION ; CO2 CONSUMPTION ; GASEOUS CARBON ; ORGANIC-MATTER ; CRITICAL ZONE ; PRECIPITATION ; TERRESTRIAL ; WATER ; TRANSPORT |
| 资助项目 | National Natural Science Foundation of China[41830860] ; National Natural Science Foundation of China[41807167] ; 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:000685246900019 |
| 出版者 | ELSEVIER |
| 资助机构 | National Natural Science Foundation of China |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/165317]  |
| 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, Coll Resources & Environm, Beijing 101408, Peoples R China 2.Chinese Acad Sci, Key Lab Ecosyst Network Observat & Modeling, Inst Geog Sci & Nat Resources Res, Beijing 100101, Peoples R China 3.Univ Chinese Acad Sci, Yanshan Earth Crit Zone & Surface Fluxes Res Stn, Beijing 101408, Peoples R China |
| 推荐引用方式 GB/T 7714 | Song Xianwei,Lyu Sidan,Sun Kun,et al. Flux and source of dissolved inorganic carbon in a headwater stream in a subtropical plantation catchment[J]. JOURNAL OF HYDROLOGY,2021,600:10. |
| APA | Song Xianwei,Lyu Sidan,Sun Kun,Gao Yang,&Wen Xuefa.(2021).Flux and source of dissolved inorganic carbon in a headwater stream in a subtropical plantation catchment.JOURNAL OF HYDROLOGY,600,10. |
| MLA | Song Xianwei,et al."Flux and source of dissolved inorganic carbon in a headwater stream in a subtropical plantation catchment".JOURNAL OF HYDROLOGY 600(2021):10. |
入库方式： OAI收割
来源：地理科学与资源研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。