文章基本信息

标题：Recovery of plant community functional traits following severe soil perturbation in plantations: a case-study
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作者：François Hébert ; Marianne Bachand ; Nelson Thiffault 等
期刊名称：Ecosystems and People
印刷版ISSN：2639-5908
电子版ISSN：2639-5916
出版年度：2016
卷号：12
期号：1-2
页码：116-127
DOI：10.1080/21513732.2016.1146334
语种：English
出版社：Taylor & Francis Group
摘要：We present a case study in which we assessed the effects of a severe soil perturbation on theplant community and soil variables in young hybrid poplar (Populus sp.) plantations ofsouthern Québec (Canada). Our overall goal was to test if soil perturbation and plantingfast-growing species could promote the reestablishment of a relatively diverse plant community. A chronosequence that included three plantations (4, 8, and 12-year old) establishedafter soil scarification, paired with three natural stands representative of the local temperatemixedwood forest comprising both pioneer and late-successional tree species, was implemented. Vegetation surveys and soil collection were performed in 2012 and species traitswere provided by the Traits Of Plants In Canada and TRY databases. Principal response curveanalyses showed species and functional trait divergence between treated and natural standsat ages 4 and 8, but that those divergences were less at age 12. Species and trait convergences were slower in the scarification furrows than in the scarification berms (moundsbetween furrows). However, severe site preparation did not appear to affect soil variables onthe study sites. Our results suggest that even following severe site preparation, gradualrecovery of species and trait composition similar to that of natural stands appears possiblein the long term, mainly through fast canopy development by hybrid poplar. However,organic material export and soil erosion risks associated with this type of site preparationneed to be evaluated.
关键词：V-blade scarification;functional ecology;functional traits;plantbiodiversity;ecosystemresilience