Articles | Volume 20, issue 24
https://doi.org/10.5194/bg-20-4949-2023
https://doi.org/10.5194/bg-20-4949-2023
Research article
 | 
15 Dec 2023
Research article |  | 15 Dec 2023

Geomorphologic controls and anthropogenic impacts on dissolved organic carbon from mountainous rivers: insights from optical properties and carbon isotopes

Shuai Chen, Jun Zhong, Lishan Ran, Yuanbi Yi, Wanfa Wang, Zelong Yan, Si-liang Li, and Khan M. G. Mostofa

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Cited articles

Aiken, G. R., Gilmour, C. C., Krabbenhoft, D. P., and Orem, W.: Dissolved organic matter in the Florida Everglades: implications for ecosystem restoration, Crit. Rev. Environ. Sci. Technol., 41, 217–248, https://doi.org/10.1080/10643389.2010.530934, 2011. 
Aiken, G. R., Spencer, R. G. M., Striegl, R. G., Schuster, P. F., and Raymond, P. A.: Influences of glacier melt and permafrost thaw on the age of dissolved organic carbon in the Yukon River basin, Global Biogeochem. Cy., 28, 525–537, https://doi.org/10.1002/2013gb004764, 2014. 
Amaral, V., Graeber, D., Calliari, D., and Alonso, C.: Strong linkages between DOM optical properties and main clades of aquatic bacteria, Limnol. Oceanogr., 61, 906–918, https://doi.org/10.1002/lno.10258, 2016. 
Andersson, C. A. and Bro, R.: The N-way toolbox for MATLAB, Chemometr. Intell. Lab., 52, 1–4, 2000. 
Ask, J., Karlsson, J., Persson, L., Ask, P., Byström, P., and Jansson, M.: Terrestrial organic matter and light penetration: Effects on bacterial and primary production in lakes, Limnol. Oceanogr., 54, 2034–2040, https://doi.org/10.4319/lo.2009.54.6.2034, 2009. 
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Short summary
This study found the source of dissolved organic carbon and its optical properties (e.g., aromaticity, humification) are related to human land use and catchment slope in anthropogenically impacted subtropical mountainous rivers. The study highlights that the combination of dual carbon isotopes and optical properties represents a useful tool in tracing the origin of dissolved organic carbon and its in-stream processes.
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