文章基本信息

标题：Recovery of plant community functional traits following severe soil perturbation in plantations: a case-study
本地全文：下载
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
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 the plant community and soil variables in young hybrid poplar ( Populus sp.) plantations of southern Québec (Canada). Our overall goal was to test if soil perturbation and planting fast-growing species could promote the reestablishment of a relatively diverse plant community. A chronosequence that included three plantations (4, 8, and 12-year old) established after soil scarification, paired with three natural stands representative of the local temperate mixedwood forest comprising both pioneer and late-successional tree species, was implemented. Vegetation surveys and soil collection were performed in 2012 and species traits were provided by the Traits Of Plants In Canada and TRY databases. Principal response curve analyses showed species and functional trait divergence between treated and natural stands at 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 (mounds between furrows). However, severe site preparation did not appear to affect soil variables on the study sites. Our results suggest that even following severe site preparation, gradual recovery of species and trait composition similar to that of natural stands appears possible in 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 preparation need to be evaluated.
关键词：V-blade scarification ; functional ecology ; functional traits ; plant biodiversity ; ecosystem resilience