> Details

Liebmann, Patrick [Author]; Mikutta, Robert [Author]; Kalbitz, Karsten [Author]; Wordell‐Dietrich, Patrick [Author]; Leinemann, Timo [Author]; Preusser, Sebastian [Author]; Mewes, Ole [Author]; Perrin, Eike [Author]; Bachmann, Jörg [Author]; Don, Axel [Author]; Kandeler, Ellen [Author]; Marschner, Bernd [Author]; Schaarschmidt, Frank [Author]; Guggenberger, Georg [Author]

Biogeochemical limitations of carbon stabilization in forest subsoils - [published Version]

Reference
management

Bookmarks

Remove from
bookmarks

Share this on Whatsapp

Close

Bookmarks



You can manage bookmarks using lists, please log in to your user account for this.
  • Media type: E-Article; Text
  • Title: Biogeochemical limitations of carbon stabilization in forest subsoils
  • Contributor: Liebmann, Patrick [Author]; Mikutta, Robert [Author]; Kalbitz, Karsten [Author]; Wordell‐Dietrich, Patrick [Author]; Leinemann, Timo [Author]; Preusser, Sebastian [Author]; Mewes, Ole [Author]; Perrin, Eike [Author]; Bachmann, Jörg [Author]; Don, Axel [Author]; Kandeler, Ellen [Author]; Marschner, Bernd [Author]; Schaarschmidt, Frank [Author]; Guggenberger, Georg [Author]
  • imprint: Weinheim : Wiley-Vch, 2022
  • Published in: Journal of Plant Nutrition and Soil Science = Zeitschrift für Pflanzenernährung und Bodenkunde 185 (2022), Nr. 1 ; Journal of Plant Nutrition and Soil Science = Zeitschrift für Pflanzenernährung und Bodenkunde
  • Issue: published Version
  • Language: English
  • DOI: https://doi.org/10.15488/14229; https://doi.org/10.1002/jpln.202100295
  • ISSN: 1436-8730
  • Keywords: carbon cycling ; microbial community composition ; climate change mitigation ; mineral-associated organic carbon
  • Origination:
  • Footnote: Diese Datenquelle enthält auch Bestandsnachweise, die nicht zu einem Volltext führen.
  • Description: Background: Soils are important carbon (C) sinks or sources and thus of utmost importance for global carbon cycling. Particularly, subsoils are considered to have a high potential for additional C storage due to mineral surfaces still available for sorptive stabilization. Aims: Little information exists about the extent to which additional litter-derived C is transferred to and stabilized in subsoils. This study aimed at evaluating the role of litter-derived dissolved organic matter (DOM) inputs for the formation of stable mineral-associated C in subsoils. Methods: We carried out a multiple-method approach including field labeling with 13C-enriched litter, exposure of 13C-loaded reactive minerals to top- and subsoils, and laboratory sorption experiments. Results: For temperate forest soils, we found that the laboratory-based C sink capacity of subsoils is unlikely to be reached under field conditions. Surface C inputs via litter leachates are little conducive to the subsoil C pool. Only 0.5% of litter-derived C entered the subsoil as DOM within nearly 2 years and most of the recently sorbed C is prone to fast microbial mineralization rather than long-term mineral retention. Desorption to the soil solution and an adapted microbial community re-mobilize organic matter in subsoils faster than considered so far. Conclusions: We conclude that the factors controlling the current mineral retention and stabilization of C within temperate forest subsoils will likewise limit additional C uptake. Thus, in contrast to their widely debated potential to accrue more C, the role of forest subsoils as future C sink is likely overestimated and needs further reconsideration.
  • Access State: Open Access