DOI: 10.1016/j.foreco.2016.06.004
Scopus记录号: 2-s2.0-84973459179
论文题名: Linkages of C:N:P stoichiometry and bacterial community in soil following afforestation of former farmland
作者: Ren C. ; Zhao F. ; Kang D. ; Yang G. ; Han X. ; Tong X. ; Feng Y. ; Ren G.
刊名: Forest Ecology and Management
ISSN: 0378-1127
出版年: 2016
卷: 376 起始页码: 59
结束页码: 66
语种: 英语
英文关键词: Afforestation
; C:N:P stoichiometry
; Illumina sequencing
; QPCR
; Soil bacterial communities
Scopus关键词: Bacteria
; Biomass
; Conservation
; Ecology
; Farms
; Polymerase chain reaction
; Reforestation
; RNA
; Stoichiometry
; Afforestation
; Illumina
; N:p stoichiometries
; QPCR
; Soil bacterial community
; Soils
; abandoned land
; abundance
; afforestation
; agricultural land
; bacterium
; carbon
; deciduous tree
; ecosystem dynamics
; ecosystem function
; microbial community
; nitrogen
; phosphorus
; polymerase chain reaction
; relative abundance
; restoration ecology
; shrub
; soil microorganism
; stoichiometry
; sustainability
; Acidobacteria
; Bacteria (microorganisms)
; Caragana korshinskii
; Chloroflexi
; Chloroflexi (class)
; Nitrospirae
; Proteobacteria
; Robinia pseudoacacia
英文摘要: Ecological stoichiometry (C:N:P ratios) in soil plays an important role in ecosystem dynamics and functioning; however, its relationship with below-ground microbial diversity following afforestation remains poorly understood. To illustrate the linkage of C, N, and P in soil and microbial biomass, and the effect on the soil bacterial community, soil samples were collected from farmland and from three afforested land, namely Robinia pseudoacacia L., Caragana korshinskii Kom, and abandoned land, which have been arable for the past 40 years. Quantitative PCR and Illumina sequencing of the 16S rRNA genes were used to analyze soil bacterial abundance, diversity, and composition. Additionally, soil properties and C, N, and P levels in soil and microbial biomass were estimated. The results revealed that C, N, and P levels in soil and microbial biomass increased following afforestation, with a significant correlation observed, especially for the N:P ratio. Additionally, a rise in 〈alpha〉- and 〈beta〉-diversity of soil bacteria was observed in response to afforestation, and was linked to soil C:P and N:P ratios. Soil bacterial phyla with high relative abundance (relative abundance > 1%) across all samples showed inconsistent directional trends in the composition response after afforestation. An increased abundance of Proteobacteria, Acidobacteria, and Nitrospirae were observed, while the abundance of Chloroflexi was opposite (P < 0.05) following afforestation. Those were largely influenced by changes in the N:P ratio in soil and microbial biomass. Taken together, significantly increased N:P ratio in soil reflected the deficient P that would be limited for increased microbial biomass and diversity. Thus, P status should be an important factor for sustainable restoration of the forest during the process of afforestation. © 2016 Elsevier B.V. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/64804
Appears in Collections: 影响、适应和脆弱性
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作者单位: College of Agronomy, Northwest AandF University, Yangling, Shaanxi, China; The Research Center of Recycle Agricultural Engineering and Technology of Shaanxi Province, Yangling, Shaanxi, China; College of Urban and Environmental Science, Northwest University, Xi'an, Shaanxi, China; College of Forestry, Northwest AandF University, Yangling, Shaanxi, China; College of Natural Resources and Environment, Northwest AandF University, Yangling, Shaanxi, China
Recommended Citation:
Ren C.,Zhao F.,Kang D.,et al. Linkages of C:N:P stoichiometry and bacterial community in soil following afforestation of former farmland[J]. Forest Ecology and Management,2016-01-01,376