Long-term nitrogen loading alleviates phosphorus limitation in terrestrial ecosystems

Long-term nitrogen loading alleviates phosphorus limitation in terrestrial ecosystems

© 2020 John Wiley & Sons Ltd.

Bibliographische Detailangaben
Veröffentlicht in:Global change biology. - 1999. - 26(2020), 9 vom: 06. Sept., Seite 5077-5086
1. Verfasser: Chen, Ji (VerfasserIn)
Weitere Verfasser: van Groenigen, Kees J, Hungate, Bruce A, Terrer, César, van Groenigen, Jan-Willem, Maestre, Fernando T, Ying, Samantha C, Luo, Yiqi, Jørgensen, Uffe, Sinsabaugh, Robert L, Olesen, Jørgen E, Elsgaard, Lars
Format: Online-Aufsatz
Sprache:English
Veröffentlicht: 2020
Zugriff auf das übergeordnete Werk:Global change biology
Schlagworte:Journal Article Meta-Analysis microbial biomass nitrogen addition nutrient stoichiometry balance phosphorus limitation soil nitrogen content soil pH soil phosphatase activity soil phosphorus content mehr... Soil Phosphorus 27YLU75U4W Carbon 7440-44-0 Nitrogen N762921K75
Beschreibung
Zusammenfassung:© 2020 John Wiley & Sons Ltd.
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
Beschreibung:Date Completed 29.01.2021
Date Revised 29.01.2021
published: Print-Electronic
Citation Status MEDLINE
ISSN:1365-2486
DOI:10.1111/gcb.15218