The Effects, Patterns and Predictors of Phosphorus Addition on Terrestrial Litter Decomposition
Wu, Yujie (Guizhou University. Institute for Forest Resources and Environment of Guizhou)
Tie, Liehua (Centre de Recerca Ecològica i d'Aplicacions Forestals)
Huang, Congde (Sichuan Agricultural University)
Sardans i Galobart, Jordi (Centre de Recerca Ecològica i d'Aplicacions Forestals)
de la Casa, Javier (Centre de Recerca Ecològica i d'Aplicacions Forestals)
Bose, Arun K. (WSL Swiss Federal Institute for Forest, Snow and Landscape Research)
Ouyang, Shengnan (Guizhou University. Institute for Forest Resources and Environment of Guizhou)
Duan, Honglang (Guizhou University. Institute for Forest Resources and Environment of Guizhou)
Wang, Jie (Guizhou University. Institute for Forest Resources and Environment of Guizhou)
Peñuelas, Josep (Centre de Recerca Ecològica i d'Aplicacions Forestals)

Data:	2025
Resum:	Aim: Anthropogenic phosphorus (P) input profoundly affects carbon (C) and nutrient dynamics in terrestrial ecosystems, which poses a threat to soil health and nutrient sustainability. Litter decomposition is crucial for maintaining soil C and nutrient pools, yet there is a significant knowledge gap regarding the effects of anthropogenic P input on terrestrial litter decomposition. Location: Terrestrial ecosystems. Time Period: 1985-2024. Major Taxa Studied: Litter decomposition. Methods: We conducted a meta-analysis based on 731 observations from 40 peer-reviewed articles to determine the overall effects, patterns and primary predictors of P addition on litter decomposition. Results: The results showed that P addition increased the activities of β-1,4-glucosidase (BG) and β-1,4-N-acetylglucosaminidase (NAG) during decomposition and accelerated the degradation of lignin and cellulose and the release of litter C. This resulted in a 6. 63% increase in litter mass loss. The positive effect of P addition on litter mass loss was further amplified when combined with N addition. In addition, the patterns varied depending on P fertiliser type (e. g. , Ca(H2PO4)2, NaH2PO4, and KH2PO4), P addition level (e. g. , < 5, 5-10 and > 10 g P m-2 year-1), experimental duration (e. g. , < 12, 12-24 and > 24 months), litterbag mesh size (e. g. , < 0. 5, 0. 5-2 and > 2 mm), litter type (e. g. , leaf, stem and root), climate zone (e. g. , tropical and temperate), and ecosystem type (e. g. , forest, grassland and wetland). Model selection analysis showed that background soil pH was the primary predictor driving litter decomposition in response to P addition. Main Conclusions: Our results highlighted that P addition promoted the degradation of organic C, lignin, and cellulose and accelerated the process of litter decomposition. Moreover, the patterns and primary predictors (e. g. , backgroud soil pH) are critical for accurately understanding how anthropogenic P input influences these processes.
Ajuts:	Generalitat de Catalunya 2021/ SGR-1333 Agencia Estatal de Investigación PID2020-115770RB-I00 Agencia Estatal de Investigación TED2021-132627B-I00
Nota:	Fundación Ramon Areces grant CIVP20A6621
Drets:	Aquest material està protegit per drets d'autor i/o drets afins. Podeu utilitzar aquest material en funció del que permet la legislació de drets d'autor i drets afins d'aplicació al vostre cas. Per a d'altres usos heu d'obtenir permís del(s) titular(s) de drets.
Llengua:	Anglès
Document:	Article ; recerca ; Versió acceptada per publicar
Matèria:	Biodegradation ; Extracellular enzyme ; Litter decomposition ; Meta-analysis ; Nutrient release ; Phosphorus addition
Publicat a:	Global Ecology and Biogeography, Vol. 34, Num. 5 (May 2025) , art. e70057, ISSN 1466-8238

DOI: 10.1111/geb.70057

Disponible a partir de: 2026-05-31 Postprint 1.2 MB

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