Fire-derived phosphorus fertilization of African tropical forests.

Autor: Bauters M; Department of Green Chemistry and Technology, Ghent University, Ghent, Belgium. Marijn.Bauters@UGent.be.; Department of Environment, Ghent University, Ghent, Belgium. Marijn.Bauters@UGent.be., Drake TW; Department of Environmental Systems Science, Swiss Federal Institute of Technology, ETH Zurich, Zurich, Switzerland., Wagner S; Department of Earth and Environmental Sciences, Rensselaer Polytechnic Institute, Troy, NY, USA., Baumgartner S; Department of Green Chemistry and Technology, Ghent University, Ghent, Belgium.; Earth and Life Institute, UCLouvain, Louvain-la-Neuve, Belgium., Makelele IA; Department of Green Chemistry and Technology, Ghent University, Ghent, Belgium.; Department of Biology, Université Officielle de Bukavu, Bukavu, Democratic Republic of the Congo., Bodé S; Department of Green Chemistry and Technology, Ghent University, Ghent, Belgium., Verheyen K; Department of Environment, Ghent University, Ghent, Belgium., Verbeeck H; Department of Environment, Ghent University, Ghent, Belgium., Ewango C; Faculty of Renewable Natural Resources Management, University of Kisangani, Kisangani, Democratic Republic of the Congo., Cizungu L; Soil Science Laboratory, Faculty of Agronomy, Université Catholique de Bukavu, Bukavu, Democratic Republic of the Congo., Van Oost K; Earth and Life Institute, UCLouvain, Louvain-la-Neuve, Belgium., Boeckx P; Department of Green Chemistry and Technology, Ghent University, Ghent, Belgium.
Jazyk: angličtina
Zdroj: Nature communications [Nat Commun] 2021 Aug 26; Vol. 12 (1), pp. 5129. Date of Electronic Publication: 2021 Aug 26.
DOI: 10.1038/s41467-021-25428-3
Abstrakt: Central African tropical forests face increasing anthropogenic pressures, particularly in the form of deforestation and land-use conversion to agriculture. The long-term effects of this transformation of pristine forests to fallow-based agroecosystems and secondary forests on biogeochemical cycles that drive forest functioning are poorly understood. Here, we show that biomass burning on the African continent results in high phosphorus (P) deposition on an equatorial forest via fire-derived atmospheric emissions. Furthermore, we show that deposition loads increase with forest regrowth age, likely due to increasing canopy complexity, ranging from 0.4 kg P ha -1  yr -1 on agricultural fields to 3.1 kg P ha -1  yr -1 on old secondary forests. In forest systems, canopy wash-off of dry P deposition increases with rainfall amount, highlighting how tropical forest canopies act as dynamic reservoirs for enhanced addition of this essential plant nutrient. Overall, the observed P deposition load at the study site is substantial and demonstrates the importance of canopy trapping as a pathway for nutrient input into forest ecosystems.
(© 2021. The Author(s).)
Databáze: MEDLINE
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