Cascading multiscale watershed effects on differential carbon isotopic characteristics and associated hydrological processes
文献类型：期刊论文
| 作者 | Gao, Yang1,3; Jia, Junjie1,3; Lu, Yao1,3; Zhou, Feng4; Hao, Zhuo1,3; Johnes, Penny J.5; Dungait, Jennifer A. J.6; Shi, Kun2 |
| 刊名 | JOURNAL OF HYDROLOGY
 |
| 出版日期 | 2020-09-01 |
| 卷号 | 588页码:11 |
| 关键词 | C transport C-13 Watershed Scale effect Hydrological process |
| ISSN号 | 0022-1694 |
| DOI | 10.1016/j.jhydrol.2020.125139 |
| 通讯作者 | Gao, Yang(gaoyang@igsnrr.ac.cn) |
| 英文摘要 | Understanding land-use change accompanied by anthropogenic activities under alterations in watershed size regulations or differential carbon (C) isotope characteristics remain a challenge in C cycling research. In this study, we investigate changes in the export of C composition and its isotopic characteristics at multiple scales in a subtropical cascading watershed in China. Results show that C concentrations in rainfall and dissolved total carbon (DTC), dissolved organic carbon (DOC) and delta C-13 in runoff seasonally fluctuate at a temporal scale. On average, the delta C-13 from silicate rock weathering was 31-32%, contributing the largest amount of delta C-13 in the different watersheds. Moreover, the contribution of isotopic composition from atmospheric deposition to the delta C-13 fraction increased as watershed size increased, while the corresponding contribution from soil organic matter (SOM) decomposition decreased. On the other hand, anthropogenic activities play a dominant role in the isotopic composition of large watersheds. In addition, the correlation coefficient between C transport via runoff and the delta O-18 value in rainfall increased as watershed size increased. This indicated that as a source rainfall had an obvious influence on C transport in runoff according to proportional values measured in event and pre-event water. |
| WOS关键词 | LAND-USE ; STABLE-ISOTOPES ; ORGANIC-MATTER ; FUTURE CLIMATE ; SOIL CARBON ; RIVER ; CATCHMENT ; TERRESTRIAL ; EFFICIENCY ; STREAMFLOW |
| 资助项目 | National Nature Science Foundation of China[41922003] ; National Nature Science Foundation of China[41871080] ; National Nature Science Foundation of China[41830860] |
| WOS研究方向 | Engineering ; Geology ; Water Resources |
| 语种 | 英语 |
| WOS记录号 | WOS:000568826300017 |
| 出版者 | ELSEVIER |
| 资助机构 | National Nature Science Foundation of China |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/156873]  |
| 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, Key Lab Ecosyst Network Observat & Modeling, Inst Geog Sci & Nat Resources Res, Beijing 100101, Peoples R China 2.Chinese Acad Sci, State Key Lab Lake Sci & Environm, Nanjing Inst Geog & Limnol, Nanjing 210008, Peoples R China 3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 4.Peking Univ, Coll Urban & Environm Sci, Sinofrench Inst Earth Syst Sci, Beijing, Peoples R China 5.Univ Bristol, Sch Geog Sci, Univ Rd, Bristol BS8 1SS, Avon, England 6.Univ Exeter, Geog, CLES, Amory Bldg,Rennes Dr, Exeter EX4 4RJ, Devon, England |
| 推荐引用方式 GB/T 7714 | Gao, Yang,Jia, Junjie,Lu, Yao,et al. Cascading multiscale watershed effects on differential carbon isotopic characteristics and associated hydrological processes[J]. JOURNAL OF HYDROLOGY,2020,588:11. |
| APA | Gao, Yang.,Jia, Junjie.,Lu, Yao.,Zhou, Feng.,Hao, Zhuo.,...&Shi, Kun.(2020).Cascading multiscale watershed effects on differential carbon isotopic characteristics and associated hydrological processes.JOURNAL OF HYDROLOGY,588,11. |
| MLA | Gao, Yang,et al."Cascading multiscale watershed effects on differential carbon isotopic characteristics and associated hydrological processes".JOURNAL OF HYDROLOGY 588(2020):11. |
入库方式： OAI收割
来源：地理科学与资源研究所
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