Long-term nitrogen loading alleviates phosphorus limitation in terrestrial ecosystems.
microbial biomass
nitrogen addition
nutrient stoichiometry balance
phosphorus limitation
soil nitrogen content
soil pH
soil phosphatase activity
soil phosphorus content
Journal
Global change biology
ISSN: 1365-2486
Titre abrégé: Glob Chang Biol
Pays: England
ID NLM: 9888746
Informations de publication
Date de publication:
Sep 2020
Sep 2020
Historique:
received:
28
04
2020
accepted:
21
05
2020
pubmed:
13
6
2020
medline:
30
1
2021
entrez:
13
6
2020
Statut:
ppublish
Résumé
Increased human-derived nitrogen (N) deposition to terrestrial ecosystems has resulted in widespread phosphorus (P) limitation of net primary productivity. However, it remains unclear if and how N-induced P limitation varies over time. Soil extracellular phosphatases catalyze the hydrolysis of P from soil organic matter, an important adaptive mechanism for ecosystems to cope with N-induced P limitation. Here we show, using a meta-analysis of 140 studies and 668 observations worldwide, that N stimulation of soil phosphatase activity diminishes over time. Whereas short-term N loading (≤5 years) significantly increased soil phosphatase activity by 28%, long-term N loading had no significant effect. Nitrogen loading did not affect soil available P and total P content in either short- or long-term studies. Together, these results suggest that N-induced P limitation in ecosystems is alleviated in the long-term through the initial stimulation of soil phosphatase activity, thereby securing P supply to support plant growth. Our results suggest that increases in terrestrial carbon uptake due to ongoing anthropogenic N loading may be greater than previously thought.
Substances chimiques
Soil
0
Phosphorus
27YLU75U4W
Carbon
7440-44-0
Nitrogen
N762921K75
Types de publication
Journal Article
Meta-Analysis
Langues
eng
Sous-ensembles de citation
IM
Pagination
5077-5086Subventions
Organisme : H2020 Marie Skłodowska-Curie Actions
ID : 839806
Organisme : H2020 European Research Council
ID : 647038 [BIODESERT]
Organisme : Lawrence Livermore National Laboratory
ID : DE-AC52-07NA27344
Organisme : National Natural Science Foundation of China
ID : 41701292
Organisme : Aarhus Universitets Forskningsfond
ID : AUFF-E-2019-7-1
Organisme : China Postdoctoral Science Foundation
ID : 2017M610647
Organisme : China Postdoctoral Science Foundation
ID : 2018T111091
Organisme : LLNL-LDRD Program
ID : 20-ERD-055
Organisme : Generalitat Valenciana
ID : CIDEGENT/2018/041
Informations de copyright
© 2020 John Wiley & Sons Ltd.
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