DOI: 10.1111/gcb.14163
Scopus记录号: 2-s2.0-85046368707
论文题名: Long-term nitrogen fertilization decreases bacterial diversity and favors the growth of Actinobacteria and Proteobacteria in agro-ecosystems across the globe
作者: Dai Z. ; Su W. ; Chen H. ; Barberán A. ; Zhao H. ; Yu M. ; Yu L. ; Brookes P.C. ; Schadt C.W. ; Chang S.X. ; Xu J.
刊名: Global Change Biology
ISSN: 13541013
出版年: 2018
卷: 24, 期: 8 起始页码: 3452
结束页码: 3461
语种: 英语
英文关键词: Actinobacteria
; agro-ecosystems
; bacterial diversity
; community composition
; microbial biomass
; N fertilization
Scopus关键词: agricultural ecosystem
; bacterium
; biomass
; fertilizer application
; growth rate
; microbial community
; nitrogen
; relative abundance
; species diversity
; Acidobacteria
; Actinobacteria
; Bacteria (microorganisms)
; Proteobacteria
英文摘要: Long-term elevated nitrogen (N) input from anthropogenic sources may cause soil acidification and decrease crop yield, yet the response of the belowground microbial community to long-term N input alone or in combination with phosphorus (P) and potassium (K) is poorly understood. We explored the effect of long-term N and NPK fertilization on soil bacterial diversity and community composition using meta-analysis of a global dataset. Nitrogen fertilization decreased soil pH, and increased soil organic carbon (C) and available N contents. Bacterial taxonomic diversity was decreased by N fertilization alone, but was increased by NPK fertilization. The effect of N fertilization on bacterial diversity varied with soil texture and water management, but was independent of crop type or N application rate. Changes in bacterial diversity were positively related to both soil pH and organic C content under N fertilization alone, but only to soil organic C under NPK fertilization. Microbial biomass C decreased with decreasing bacterial diversity under long-term N fertilization. Nitrogen fertilization increased the relative abundance of Proteobacteria and Actinobacteria, but reduced the abundance of Acidobacteria, consistent with the general life history strategy theory for bacteria. The positive correlation between N application rate and the relative abundance of Actinobacteria indicates that increased N availability favored the growth of Actinobacteria. This first global analysis of long-term N and NPK fertilization that differentially affects bacterial diversity and community composition provides a reference for nutrient management strategies for maintaining belowground microbial diversity in agro-ecosystems worldwide. © 2018 John Wiley & Sons Ltd
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/110305
Appears in Collections: 影响、适应和脆弱性 气候变化事实与影响
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作者单位: Zhejiang Provincial Key Laboratory of Agricultural Resources and Environment, Institute of Soil and Water Resources and Environmental Science, Zhejiang University, Hangzhou, China; Biosciences Division, Oak Ridge National Laboratory, Oak Ridge, TN, United States; Department of Soil, Water and Environmental Science, University of Arizona, Tucson, AZ, United States; Department of Renewable Resources, University of Alberta, Edmonton, AB, Canada
Recommended Citation:
Dai Z.,Su W.,Chen H.,et al. Long-term nitrogen fertilization decreases bacterial diversity and favors the growth of Actinobacteria and Proteobacteria in agro-ecosystems across the globe[J]. Global Change Biology,2018-01-01,24(8)