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

Ji, Hongbing; Li, Cai; Ding, Huaijian; Gao, Yang

doi:https://doi.org/10.5194/bg-13-3687-2016

Articles | Volume 13, issue 12

https://doi.org/10.5194/bg-13-3687-2016

© Author(s) 2016. This work is distributed under
the Creative Commons Attribution 3.0 License.

https://doi.org/10.5194/bg-13-3687-2016

© Author(s) 2016. This work is distributed under
the Creative Commons Attribution 3.0 License.

Articles | Volume 13, issue 12

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, Cai Li, Huaijian Ding, and Yang Gao

Supplement

https://doi.org/10.5194/bg-13-3687-2016-supplement

Data sets

Source and flux of POC in a karstic area in the Changjiang River watershed: impacts of reservoirs and extreme drought H. Ji, C. Li, H. Ding and Y. Gao https://doi.org/10.5194/bg-2015-655

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Short summary

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.