DOI: 10.1111/gcb.12493
论文题名: Priming effect and microbial diversity in ecosystem functioning and response to global change: A modeling approach using the SYMPHONY model
作者: Perveen N. ; Barot S. ; Alvarez G. ; Klumpp K. ; Martin R. ; Rapaport A. ; Herfurth D. ; Louault F. ; Fontaine S.
刊名: Global Change Biology
ISSN: 13541013
出版年: 2014
卷: 20, 期: 4 起始页码: 1174
结束页码: 1190
语种: 英语
英文关键词: Bank functioning
; C sequestration
; C/N coupling
; Nutrient cycling
; Nutrient mining
; Plant/soil interactions
Scopus关键词: carbon sequestration
; ecosystem function
; ecosystem modeling
; ecosystem response
; global change
; microbial community
; nutrient cycling
; species diversity
; carbon
; nitrogen
; soil
; biodiversity
; carbon sequestration
; ecosystem
; metabolism
; microbiology
; plant
; Poaceae
; soil
; theoretical model
; Biodiversity
; Carbon
; Carbon Sequestration
; Ecosystem
; Models, Theoretical
; Nitrogen
; Plants
; Poaceae
; Soil
; Soil Microbiology
英文摘要: Integration of the priming effect (PE) in ecosystem models is crucial to better predict the consequences of global change on ecosystem carbon (C) dynamics and its feedbacks on climate. Over the last decade, many attempts have been made to model PE in soil. However, PE has not yet been incorporated into any ecosystem models. Here, we build plant/soil models to explore how PE and microbial diversity influence soil/plant interactions and ecosystem C and nitrogen (N) dynamics in response to global change (elevated CO2 and atmospheric N depositions). Our results show that plant persistence, soil organic matter (SOM) accumulation, and low N leaching in undisturbed ecosystems relies on a fine adjustment of microbial N mineralization to plant N uptake. This adjustment can be modeled in the SYMPHONY model by considering the destruction of SOM through PE, and the interactions between two microbial functional groups: SOM decomposers and SOM builders. After estimation of parameters, SYMPHONY provided realistic predictions on forage production, soil C storage and N leaching for a permanent grassland. Consistent with recent observations, SYMPHONY predicted a CO2-induced modification of soil microbial communities leading to an intensification of SOM mineralization and a decrease in the soil C stock. SYMPHONY also indicated that atmospheric N deposition may promote SOM accumulation via changes in the structure and metabolic activities of microbial communities. Collectively, these results suggest that the PE and functional role of microbial diversity may be incorporated in ecosystem models with a few additional parameters, improving accuracy of predictions. © 2013 John Wiley & Sons Ltd. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/61942
Appears in Collections: 影响、适应和脆弱性
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作者单位: INRA, UR874 (Unité Recherche d'Ecosystème prairial), 5 Chemin de Beaulieu, 63039 Clermont-Ferrand, France; IRD, UMR (7618) BIOEMCO (Biogéochimie et Ecologie des Milieux Continentaux), Ecole Normale Supérieure, 46 rue d'Ulm, 75230, Paris, France; Clermont Université, VetAgro Sup, BP 10448, F-6300 Clermont-Ferrand, France; UMR INRA/SupAgro 'MISTEA' and EPI INRA/INRIA 'MODEMIC', 2, pl. Viala, 34060 Montpellier, France
Recommended Citation:
Perveen N.,Barot S.,Alvarez G.,et al. Priming effect and microbial diversity in ecosystem functioning and response to global change: A modeling approach using the SYMPHONY model[J]. Global Change Biology,2014-01-01,20(4)