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A comparison of repeated soil inventory and carbon flux budget to detect soil carbon stock changes after conversion from cropland to grasslands

2011; Wiley; Volume: 17; Issue: 11 Linguagem: Inglês

10.1111/j.1365-2486.2011.02471.x

1365-2486

Jens Leifeld, Christof Ammann, A. Neftel, Jürg Fuhrer,

Plant Water Relations and Carbon Dynamics

Global Change BiologyVolume 17, Issue 11 p. 3366-3375 Original Article A comparison of repeated soil inventory and carbon flux budget to detect soil carbon stock changes after conversion from cropland to grasslands Jens Leifeld, Corresponding Author Jens Leifeld Air Pollution/Climate Group, Agroscope Reckenholz-Tänikon Research Station ART, Reckenholzstrasse 191, Zurich, CH 8046 SwitzerlandCorrespondence: Jens Leifeld, tel. + 41 44 3777 510, fax + 41 44 3777 201, e-mail: [email protected]Search for more papers by this authorChristof Ammann, Christof Ammann Air Pollution/Climate Group, Agroscope Reckenholz-Tänikon Research Station ART, Reckenholzstrasse 191, Zurich, CH 8046 SwitzerlandSearch for more papers by this authorAlbrecht Neftel, Albrecht Neftel Air Pollution/Climate Group, Agroscope Reckenholz-Tänikon Research Station ART, Reckenholzstrasse 191, Zurich, CH 8046 SwitzerlandSearch for more papers by this authorJürg Fuhrer, Jürg Fuhrer Air Pollution/Climate Group, Agroscope Reckenholz-Tänikon Research Station ART, Reckenholzstrasse 191, Zurich, CH 8046 SwitzerlandSearch for more papers by this author Jens Leifeld, Corresponding Author Jens Leifeld Air Pollution/Climate Group, Agroscope Reckenholz-Tänikon Research Station ART, Reckenholzstrasse 191, Zurich, CH 8046 SwitzerlandCorrespondence: Jens Leifeld, tel. + 41 44 3777 510, fax + 41 44 3777 201, e-mail: [email protected]Search for more papers by this authorChristof Ammann, Christof Ammann Air Pollution/Climate Group, Agroscope Reckenholz-Tänikon Research Station ART, Reckenholzstrasse 191, Zurich, CH 8046 SwitzerlandSearch for more papers by this authorAlbrecht Neftel, Albrecht Neftel Air Pollution/Climate Group, Agroscope Reckenholz-Tänikon Research Station ART, Reckenholzstrasse 191, Zurich, CH 8046 SwitzerlandSearch for more papers by this authorJürg Fuhrer, Jürg Fuhrer Air Pollution/Climate Group, Agroscope Reckenholz-Tänikon Research Station ART, Reckenholzstrasse 191, Zurich, CH 8046 SwitzerlandSearch for more papers by this author First published: 06 July 2011 https://doi.org/10.1111/j.1365-2486.2011.02471.xCitations: 28Read the full textAboutPDF ToolsRequest permissionExport citationAdd to favoritesTrack citation ShareShare Give accessShare full text accessShare full-text accessPlease review our Terms and Conditions of Use and check box below to share full-text version of article.I have read and accept the Wiley Online Library Terms and Conditions of UseShareable LinkUse the link below to share a full-text version of this article with your friends and colleagues. Learn more.Copy URL Share a linkShare onFacebookTwitterLinkedInRedditWechat Abstract Assessment of soil carbon (C) stock changes over time is typically based on the application of two methods, namely (i) repeated soil inventory and (ii) determination of the ecosystem C budget or net biome productivity (NBP) by continuous measurement of CO2 exchange in combination with quantification of other C imports and exports. Here, we applied both methods in parallel to determine C stock changes of two temperate grassland fields previously converted from long-term cropland. The grasslands differed in management intensity with either intensive management (high fertilization, frequent cutting) or extensive management (no fertilization, less frequent cutting). Soil organic C stocks (0–45 cm depth) were quantified at the beginning (2001) and the end (2006) of a 5 year observational period using the equivalent soil mass approach. For the same period and in both fields, NBP was quantified from net CO2 fluxes monitored using eddy covariance systems, and measured C import by organic fertilizer and C export by harvest. Both NBP and repeated soil inventories revealed a consistent and significant difference between management systems of 170 ± 48 and 253 ± 182 g C m−2 a−1, respectively. For both fields, the inventory method showed a tendency towards higher C loss/smaller C gain than NBP. In the extensive field, a significant C loss was observed by the inventory but not by the NBP approach. Thus neither flux measurements nor repeated soil sampling may be suitable for tracking absolute changes in SOC, but both give similar answers with respect to relative changes. Citing Literature Supporting Information Filename Description gcb2471-sup-0001-fS1-AA.tifimage/tif, 1.6 MB Figure S1. Map of measurement fields and adjacent agricultural fields at the Oensingen site, together with mean relative distribution of wind direction at the site (after Ammann et al., 2007). Please note: The publisher is not responsible for the content or functionality of any supporting information supplied by the authors. Any queries (other than missing content) should be directed to the corresponding author for the article. Volume17, Issue11November 2011Pages 3366-3375 RelatedInformation