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Biogeosciences An interactive open-access journal of the European Geosciences Union
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Volume 13, issue 12
Biogeosciences, 13, 3687–3699, 2016
https://doi.org/10.5194/bg-13-3687-2016
© Author(s) 2016. This work is distributed under
the Creative Commons Attribution 3.0 License.
Biogeosciences, 13, 3687–3699, 2016
https://doi.org/10.5194/bg-13-3687-2016
© Author(s) 2016. This work is distributed under
the Creative Commons Attribution 3.0 License.

Research article 23 Jun 2016

Research article | 23 Jun 2016

Source and flux of POC in a karstic area in the Changjiang River watershed: impacts of reservoirs and extreme drought

Hongbing Ji et al.

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Revised manuscript accepted for BG
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Cited articles

Amiotte Suchet, P., Probst, J. L., and Ludwig, W.: Worldwide distribution of continental rock lithology: implications for the atmospheric/soil CO2 uptake by continental weathering and alkalinity river transport to the oceans, Global Biogeochem. Cy., 17, 7–1, 2003.
Aucour, A. M., France-Lanord, C., Pedoja, K., Pierson-Wickmann, A. C., and Sheppard, S. M. F.: Fluxes and sources of particulate organic carbon in the Ganga-Brahmaputra river system, Global Biogeochem. Cy., 20, GB2006, https://doi.org/10.1029/2004GB002324, 2006.
Bao, H. Y., Wu, Y., Zhang, J., Deng, B., and He, Q.: Composition and flux of suspended organic matter in the middle and lower reaches of the Changjiang (Yangtze River)-impact of the Three Gorges Dam and the role of tributaries and channel erosion, Hydrol. Process., 28, 2877–2877, 2014.
Bianchi, T. S., Wysocki, L. A., Stewart, M., Filley, T. R., and Mckee, B. A.: Temporal variability in terrestrially-derived sources of particulate organic carbon in the lower Mississippi River and its upper tributaries, Geochim. Cosmochim. Ac., 71, 4425–4437, 2007.
Cai, W. J., Guo, X., Chen, C. T. A., Dai, M., Zhang, L., Zhai, W., Lohrena, S. E., Yin, K., Harrison, P. J., and Wang, Y.: A comparative overview of weathering intensity and HCO3 flux in the world's major rivers with emphasis on the Changjiang, Huanghe, Zhujiang (Pearl) and Mississippi Rivers, Cont. Shelf Res., 28, 1538–1549, 2008.
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The mineral composition, C / N ratios as well as 13C and 15N, of POC was firstly analyzed in suspended and surface sediments in the Wujiang River after the Three Gorges Dam began impounding sediment in 2004. A comparison of POC yield was made between karstic rivers and non-karstic rivers to evaluate the influence of carbonate distribution on POC transport. Considering the cascade reservoir and climate in the Wujiang River, the impacts of reservoirs and extreme drought were estimated in this study.
The mineral composition, C / N ratios as well as 13C and 15N, of POC was firstly analyzed in...
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