Subalpine grassland carbon balance during 7 years of increased
atmospheric N deposition

Volk, Matthias; Enderle, Jan; Bassin, Seraina

doi:https://doi.org/10.5194/bg-13-3807-2016

Articles | Volume 13, issue 12

https://doi.org/10.5194/bg-13-3807-2016

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

https://doi.org/10.5194/bg-13-3807-2016

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

Articles | Volume 13, issue 12

Research article

|

01 Jul 2016

Research article |

| 01 Jul 2016

Subalpine grassland carbon balance during 7 years of increased atmospheric N deposition

Matthias Volk, Jan Enderle, and Seraina Bassin

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Final revised paper (published on 01 Jul 2016)
Preprint (discussion started on 05 Feb 2016)

Interactive discussion

Status: closed

AC: Author comment | RC: Referee comment | SC: Short comment | EC: Editor comment

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- Supplement

RC1: 'Review of Volk et al Atmospheric N deposition causes carbon balance gains in a seven year field experiment in sub-alpine grassland', Anonymous Referee #2, 18 Feb 2016
- AC1: 'Authors response to RC1', Matthias Volk, 12 May 2016
RC2: 'Review of Volk et al.', Edzo Veldkamp, 17 Apr 2016
- AC2: 'Authors comment to RC1', Matthias Volk, 12 May 2016

Peer-review completion

AR: Author's response | RR: Referee report | ED: Editor decision

ED: Reconsider after major revisions (23 May 2016) by Edzo Veldkamp

AR by Matthias Volk on behalf of the Authors (24 May 2016)

ED: Publish as is (08 Jun 2016) by Edzo Veldkamp

AR by Matthias Volk on behalf of the Authors (08 Jun 2016)

Short summary

Grasslands hold 28 % of global soil organic carbon (SOC). We studied carbon-fluxes and -pools in subalpine grassland under atmospheric nitrogen (N) deposition (air pollution) treatment. Unlike plant yield, SOC and CO₂ gains were largest at intermediate, not maximum N deposition. Thus, N deposition driven plant yield increases may not be considered as a valid proxy for ecosystem C-pool increases and the biological sink for CO₂ greenhouse gas may be smaller under higher N deposition.