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DOI | 10.5194/bg-15-3345-2018 |
Characteristics of wet dissolved carbon deposition in a semi-arid catchment at the Loess Plateau, China | |
Wang, Linhua; Yen, Haw; Chen, Liding; Xinhui, E.; Wang, Yafeng | |
通讯作者 | Wang, YF (通讯作者) |
发表日期 | 2018 |
ISSN | 1726-4170 |
EISSN | 1726-4189 |
起始页码 | 3345 |
结束页码 | 3356 |
卷号 | 15期号:11 |
英文摘要 | Wet dissolved carbon deposition is a critical node of the global carbon cycle, but little is known about dissolved organic and inorganic carbon (DOC and DIC) concentrations and fluxes in the semi-arid areas of the Loess Plateau Region (LPR). In this study, we measured variations in DOC and DIC concentrations in rainfalls at Yangjuangou Ecological Restoration and Soil and Water Observatory. Rainwater samples were collected in 16 rainfall events from July to September and the event-based, monthly concentrations and fluxes of DOC and DIC were quantified. The results showed that the event-based concentrations and fluxes of DOC and DIC were highly variable, ranging from 0.56 to 28.71 mg CL-1 and from 3.47 to 17.49 mg CL-1, respectively. The corresponding event-based fluxes ranged from 0.21-258.36 mg Cm-2 and from 4.12 to 42.32 mg Cm-2. The monthly concentrations of DOC and DIC were 24.62 and 4.30 (July), 3.58 and 10.52 (August), and 1.01 and 5.89 (September) mg CL-1, respectively. Thus, the monthly deposition fluxes of DOC and DIC were 541.64/94.60, 131.03/385.03, and 44.44/259.16 mg Cm-2 for July, August, and September, respectively. In addition, the concentrations of DOC and DIC for the concentrated rainfall season (July-September) in the studied catchment were 7.06 and 7.00 mg CL-1, respectively. The estimated annual wet dissolved carbon depositions were 1.91 and 1.89 g Cm-2 yr(-1) for DOC and DIC, respectively. The results of this study suggest the variation in concentrations and fluxes of DOC and DIC and explore that these variation may be related to the dissolved carbon source and the rainfall characteristics during the concentrated rainfall season in the semi-arid catchment of the LPR. Furthermore, these results also suggest that dissolved carbon may be an important external input of carbon into terrestrial ecosystems. |
关键词 | ORGANIC-CARBONATMOSPHERIC DEPOSITIONTIBETAN PLATEAUBULK DEPOSITIONHUBBARD-BROOKCOASTAL TOWNPRECIPITATIONRAINWATERFLUXMATTER |
语种 | 英语 |
WOS研究方向 | Environmental Sciences & Ecology ; Geology |
WOS类目 | Ecology ; Geosciences, Multidisciplinary |
WOS记录号 | WOS:000434354700001 |
来源期刊 | BIOGEOSCIENCES |
来源机构 | 中国科学院青藏高原研究所 |
文献类型 | 期刊论文 |
条目标识符 | http://gcip.llas.ac.cn/handle/2XKMVOVA/259272 |
推荐引用方式 GB/T 7714 | Wang, Linhua,Yen, Haw,Chen, Liding,et al. Characteristics of wet dissolved carbon deposition in a semi-arid catchment at the Loess Plateau, China[J]. 中国科学院青藏高原研究所,2018,15(11). |
APA | Wang, Linhua,Yen, Haw,Chen, Liding,Xinhui, E.,&Wang, Yafeng.(2018).Characteristics of wet dissolved carbon deposition in a semi-arid catchment at the Loess Plateau, China.BIOGEOSCIENCES,15(11). |
MLA | Wang, Linhua,et al."Characteristics of wet dissolved carbon deposition in a semi-arid catchment at the Loess Plateau, China".BIOGEOSCIENCES 15.11(2018). |
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