Articles | Volume 15, issue 21
Biogeosciences, 15, 6637–6648, 2018
https://doi.org/10.5194/bg-15-6637-2018
Biogeosciences, 15, 6637–6648, 2018
https://doi.org/10.5194/bg-15-6637-2018
Research article
08 Nov 2018
Research article | 08 Nov 2018

Spatiotemporal transformation of dissolved organic matter along an alpine stream flow path on the Qinghai–Tibet Plateau: importance of source and permafrost degradation

Yinghui Wang et al.

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Cited articles

Abbott, B. W., Jones, J. B., Godsey, S. E., Larouche, J. R., and Bowden, W. B.: Patterns and persistence of hydrologic carbon and nutrient export from collapsing upland permafrost, Biogeosciences, 12, 3725–3740, https://doi.org/10.5194/bg-12-3725-2015, 2015. 
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, 2014. 
Bockheim, J. G. and Munroe, J. S.: Organic carbon pools and genesis of alpine soils with permafrost: a review, Arct. Antarct. Alp. Res., 46, 987–1006, 2014. 
Broek, T. A. B., Walker, B. D., Guilderson, T. P., and McCarthy, M. D.: Coupled ultrafiltration and solid phase extraction approach for the targeted study of semi-labile high molecular weight and refractory low molecular weight dissolved organic matter, Mar. Chem., 194, 146–157, 2017. 
Corilo, Y. E.: EnviroOrg, Florida State University, 2015. 
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Short summary
With global warming, thawing of permafrost releases dissolved organic matter (DOM) into streams. By analyzing DOM along an alpine stream on the Qinghai–Tibet Plateau, we found DOM was mainly from the active layer, but with deepening of the active layer, the contribution of the deep permafrost layer increased, causing a change in the chemical composition of DOM. From the head- to downstream, DOM is undergoing rapid degradation, but some components are persistent and can be transported downstream.
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