Decision on bg-2017-549

Dear Prof. Park and co-authors

Based on the reports of the two reviewers and on my own reading of your MS and responses to the referees comments, I think your paper needs some revision before it can be published in BG. Although the evaluations by the two referees were relatively consistent concerning scientific significance and quality, the referee 2 expressed some important criticism and concern on the presentation quality and overall organization of your MS and provided a very comprehensive evaluation of your paper. I agree with referee#2 ‘s general comment that your submitted MS needs to be better organized in order to gain clarity and increase its audience. I have consulted the planned modifications in your MS and I was in general satisfied with your answers to Referre#2 and the proposed changes. For that reason, I will not send it back to review. I ask you to submit a completely re-edited MS, so I can have a last detailed reading before taking a final decision.

With best regards
Gwenaël Abril, Biogeosciences Associate Editor

Dear Dr Park
From my reading of your revised MS, I think your review can be published in Biogeosciences as a significant and original contribution to the special issue on Human impacts on carbon fluxes in Asian river systems. I suggest below few technical corrections
Thank you for publishing your work in Biogesciences
With best regards
Gwenaël Abril, Biogeosciences associate editor


Line 462

« pCO2 may continue to increase along lower reaches of large rivers in response to inputs of labile OM from floodplains (Abril et al., 2014) and pollution sources in croplands and urban areas (Kempe, 1982; Frankignoulle et al., 1998). »
Change « inputs of labile OM » by « input of labile OM and dissolved CO2 » from floodplains
In this context of floodplains, I think the paper Borges et al 2015 is also an important reference to be cited

Borges, A. V., Darchambeau, F., Teodoru, C. R., Marwick, T. R., Tamooh, F., Geeraert, N., Omengo, F. O., Guérin, F., Lambert, T., Morana, C., Okuku, E., and Bouillon, S.: Globally significant greenhouse gas emissions from African inland waters, Nat. Geosci., 8, 637–642, https://doi.org/10.1038/NGEO2486, 2015a.


Update the reference
Borges, A. V ., Abril, G., and Bouillon, S.: Carbon dynamics in the Mekong Delta. Biogeosciences Discuss., doi.org/10.5194/bg-2017-444, 2017, In review.