Decadal soil warming decreased vascular plant above and belowground production in a subarctic grassland by inducing nitrogen limitation

Decadal soil warming decreased vascular plant above and belowground production in a subarctic grassland by inducing nitrogen limitation

© 2023 The Authors New Phytologist © 2023 New Phytologist Foundation.

Bibliographische Detailangaben
Veröffentlicht in:The New phytologist. - 1979. - 240(2023), 2 vom: 08. Okt., Seite 565-576
1. Verfasser: Fang, Chao (VerfasserIn)
Weitere Verfasser: Verbrigghe, Niel, Sigurdsson, Bjarni D, Ostonen, Ivika, Leblans, Niki I W, Marañón-Jiménez, Sara, Fuchslueger, Lucia, Sigurðsson, Páll, Meeran, Kathiravan, Portillo-Estrada, Miguel, Verbruggen, Erik, Richter, Andreas, Sardans, Jordi, Peñuelas, Josep, Bahn, Michael, Vicca, Sara, Janssens, Ivan A
Format: Online-Aufsatz
Sprache:English
Veröffentlicht: 2023
Zugriff auf das übergeordnete Werk:The New phytologist
Schlagworte:Journal Article Research Support, Non-U.S. Gov't biomass distribution grasses nitrogen limitation temperature increase vascular plants Soil Nitrogen N762921K75 mehr... Carbon 7440-44-0
Beschreibung
Zusammenfassung:© 2023 The Authors New Phytologist © 2023 New Phytologist Foundation.
Below and aboveground vegetation dynamics are crucial in understanding how climate warming may affect terrestrial ecosystem carbon cycling. In contrast to aboveground biomass, the response of belowground biomass to long-term warming has been poorly studied. Here, we characterized the impacts of decadal geothermal warming at two levels (on average +3.3°C and +7.9°C) on below and aboveground plant biomass stocks and production in a subarctic grassland. Soil warming did not change standing root biomass and even decreased fine root production and reduced aboveground biomass and production. Decadal soil warming also did not significantly alter the root-shoot ratio. The linear stepwise regression model suggested that following 10 yr of soil warming, temperature was no longer the direct driver of these responses, but losses of soil N were. Soil N losses, due to warming-induced decreases in organic matter and water retention capacity, were identified as key driver of the decreased above and belowground production. The reduction in fine root production was accompanied by thinner roots with increased specific root area. These results indicate that after a decade of soil warming, plant productivity in the studied subarctic grassland was affected by soil warming mainly by the reduction in soil N
Beschreibung:Date Completed 22.09.2023
Date Revised 25.04.2024
published: Print-Electronic
ErratumIn: New Phytol. 2024 Apr 24;:. - PMID 38659155
Citation Status MEDLINE
ISSN:1469-8137
DOI:10.1111/nph.19177