Titel
Long-term soil warming decreases microbial phosphorus utilization by increasing abiotic phosphorus sorption and phosphorus losses
... show all
Abstract
Phosphorus (P) is an essential and often limiting element that could play a crucial role in terrestrial ecosystem responses to climate warming. However, it has yet remained unclear how different P cycling processes are affected by warming. Here we investigate the response of soil P pools and P cycling processes in a mountain forest after 14 years of soil warming (+4 °C). Long-term warming decreased soil total P pools, likely due to higher outputs of P from soils by increasing net plant P uptake and downward transportation of colloidal and particulate P. Warming increased the sorption strength to more recalcitrant soil P fractions (absorbed to iron oxyhydroxides and clays), thereby further reducing bioavailable P in soil solution. As a response, soil microbes enhanced the production of acid phosphatase, though this was not sufficient to avoid decreases of soil bioavailable P and microbial biomass P (and biotic phosphate immobilization). This study therefore highlights how long-term soil warming triggers changes in biotic and abiotic soil P pools and processes, which can potentially aggravate the P constraints of the trees and soil microbes and thereby negatively affect the C sequestration potential of these forests.
Stichwort
Element cycles
Objekt-Typ
Sprache
Englisch [eng]
Persistent identifier
https://phaidra.univie.ac.at/o:2046294
Erschienen in
Titel
Nature Communications
Band
14
ISSN
2041-1723
Erscheinungsdatum
2023
Verlag
Springer Science and Business Media LLC
Projektnummer
I 3745 – Austrian Science Fund (FWF)
Erscheinungsdatum
2023
Zugänglichkeit
Rechteangabe
© The Author(s) 2023

Herunterladen

Universität Wien | Universitätsring 1 | 1010 Wien | T +43-1-4277-0