DOI: 10.1016/j.foreco.2016.05.033
Scopus记录号: 2-s2.0-84969988132
论文题名: Site preparation and fertilization of wet forests alter soil bacterial and fungal abundance, community profiles and CO2 fluxes
作者: Levy-Booth D.J. ; Prescott C.E. ; Christiansen J.R. ; Grayston S.J.
刊名: Forest Ecology and Management
ISSN: 0378-1127
出版年: 2016
卷: 375 起始页码: 159
结束页码: 171
语种: 英语
英文关键词: Bacteria
; Carbon
; Drainage
; Fertilization
; Forests
; Fungi
; Mounding
Scopus关键词: Bacteria
; Carbon
; Carbon dioxide
; Drainage
; Fungi
; Microorganisms
; Polymerase chain reaction
; Reforestation
; Social sciences
; Soil moisture
; Soils
; Fertilization
; Forests
; Mechanical site preparation
; Microbial communities
; Microbial community structures
; Mounding
; Soil microbial community structure
; Terminal restriction fragments
; Forestry
; abundance estimation
; carbon dioxide
; carbon flux
; community structure
; drainage water
; environmental disturbance
; fertilizer application
; forest soil
; fungus
; genetic marker
; regeneration
; site preparation
; soil microorganism
; species diversity
; wet season
; Bacteria (microorganisms)
; Fungi
; Picea
; Thuja plicata
; Tsuga heterophylla
英文摘要: Nitrogen (N) fertilization and mechanical site preparation are used to increase productivity of forests and prevent paludification in wet climates. However, these practices may also alter soil microbial community structure and rates of decomposition and respiration. The effects of mounding, drainage and fertilization were investigated at a mounded hybrid spruce site and a drained coastal western redcedar - western hemlock site in British Columbia (B.C.), Canada. CO2 efflux was measured at four dates over a one-year period using static closed chambers. Total bacterial and fungal ribosomal marker abundance and structure were assessed using quantitative PCR and terminal-restriction fragment polymorphism (T-RFLP), respectively. Mounding reduced soil water content of planting sites, but also removed much of the forest floor layer from the rooting zone and led to a significant decrease in CO2 efflux rates, as well as bacterial and fungal abundance and diversity. Drainage increased CO2 fluxes and led to significant differences in T-RFLP profiles in drained and undrained samples. Fertilization had variable effects on the microbial community and CO2 fluxes at the two sites. Site preparation and fertilization can improve regeneration of wet forests that would otherwise be subject to paludification, but can lead to shifts in carbon fluxes and microbial community structure. Major disturbances to soil structure and composition (e.g., following mounding) can alter the microbial community structure in a way that suppresses microbial diversity and function for up to one year following treatment. © 2016 Elsevier B.V. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/64827
Appears in Collections: 影响、适应和脆弱性
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作者单位: Department of Microbiology and Immunology, University of British Columbia, 2350 Health Sciences Mall, Vancouver, BC, Canada; Department of Forest and Conservation Sciences, University of British Columbia, 2424 Main Mall, Vancouver, BC, Canada; Department of Geosciences and Natural Resource Management, University of Copenhagen, Rolighedsvej 23, Frederiksberg C, Denmark
Recommended Citation:
Levy-Booth D.J.,Prescott C.E.,Christiansen J.R.,et al. Site preparation and fertilization of wet forests alter soil bacterial and fungal abundance, community profiles and CO2 fluxes[J]. Forest Ecology and Management,2016-01-01,375