Patterns in coarse root decomposition of woody plants effects of climate, root quality, mycorrhizal associations and phylogeny

Patterns in coarse root decomposition of woody plants : effects of climate, root quality, mycorrhizal associations and phylogeny

© 2024 The Author(s). New Phytologist © 2024 New Phytologist Foundation.

Bibliographische Detailangaben
Veröffentlicht in:The New phytologist. - 1979. - 245(2025), 5 vom: 15. März, Seite 1940-1952
1. Verfasser: Ling, Long (VerfasserIn)
Weitere Verfasser: Gill, Allison L, See, Craig R, Fahey, Timothy J, Silver, Whendee L, Lambers, Hans, Ding, Yiyang, Sun, Tao
Format: Online-Aufsatz
Sprache:English
Veröffentlicht: 2025
Zugriff auf das übergeordnete Werk:The New phytologist
Schlagworte:Journal Article biogeochemical cycles coarse root decomposition meta‐analysis plant functional type root traits Nitrogen N762921K75 Phosphorus 27YLU75U4W
Beschreibung
Zusammenfassung:© 2024 The Author(s). New Phytologist © 2024 New Phytologist Foundation.
Coarse roots represent a globally important belowground carbon pool, but the factors controlling coarse root decomposition rates remain poorly understood relative to other plant biomass components. We compiled the most comprehensive dataset of coarse root decomposition data including 148 observations from 60 woody species, and linked coarse root decomposition rates to plant traits, phylogeny and climate to address questions of the dominant controls on coarse root decomposition. We found that decomposition rates increased with mean annual temperature, root nitrogen and phosphorus concentrations. Coarse root decomposition was slower for ectomycorrhizal than arbuscular mycorrhizal associated species, and angiosperm species decomposed faster than gymnosperms. Coarse root decomposition rates and calcium concentrations showed a strong phylogenetic signal. Our findings suggest that categorical traits like mycorrhizal association and phylogenetic group, in conjunction with root quality and climate, collectively serve as the optimal predictors of coarse root decomposition rates. Our findings propose a paradigm of the dominant controls on coarse decomposition, with mycorrhizal association and phylogeny acting as critical roles on coarse root decomposition, necessitating their explicit consideration in Earth-system models and ultimately improving confidence in projected carbon cycle-climate feedbacks
Beschreibung:Date Completed 29.04.2025
Date Revised 29.04.2025
published: Print-Electronic
Citation Status MEDLINE
ISSN:1469-8137
DOI:10.1111/nph.20365