Nitrogen -addition accelerates phosphorus cycling and changes phosphorus use strategy in a subtropical Moso bamboo forest
Type de ressource
Auteurs/contributeurs
- Li, Quan (Auteur)
- Lv, Jianhua (Auteur)
- Peng, Changhui (Auteur)
- Xiang, Wenhua (Auteur)
- Xiao, Wenfa (Auteur)
- Song, Xinzhang (Auteur)
Titre
Nitrogen -addition accelerates phosphorus cycling and changes phosphorus use strategy in a subtropical Moso bamboo forest
Résumé
Abstract
Ecosystem-level effects of increasing atmospheric nitrogen (N) deposition on the phosphorus (P) cycle and P use strategy are poorly understood. Here, we conducted a seven year N-addition experiment to comprehensively evaluate the effects of N deposition on P limitation, cycling, and use strategy in a subtropical Moso bamboo forest. N addition significantly increased foliar litterfall by 4.7%–21.7% and subsequent P return to the soil by 49.0%–70.1%. It also increased soil acidity, acid phosphatase activity, and soil microbial biomass P, which substantially contributed to a significantly increased soil P availability and largely alleviated the P limitation. This resulted in a significant decrease in the foliar P-resorption efficiency and the abundance and colonization of arbuscular mycorrhizal fungi. Our results indicate that N deposition can reduce plant internal cycling while enhancing ecosystem-scale cycling of P in Moso bamboo forests. This suggests a shift in P use from a ‘conservative consumption’ strategy to a ‘resource spending’ strategy. Our findings shed new light on N deposition effects on P cycle processes and P use strategy at the ecosystem scale under increasing atmospheric N deposition.
Publication
Environmental Research Letters
Volume
16
Numéro
2
Pages
024023
Date
2021-02-01
Abrév. de revue
Environ. Res. Lett.
ISSN
1748-9326
Consulté le
12/11/2024 16:02
Catalogue de bibl.
DOI.org (Crossref)
Référence
Li, Q., Lv, J., Peng, C., Xiang, W., Xiao, W., & Song, X. (2021). Nitrogen -addition accelerates phosphorus cycling and changes phosphorus use strategy in a subtropical Moso bamboo forest. Environmental Research Letters, 16(2), 024023. https://doi.org/10.1088/1748-9326/abd5e1
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