DOI: 10.1016/j.foreco.2016.09.045
Scopus记录号: 2-s2.0-84991764232
论文题名: Do shrubs facilitate oak seedling establishment in Mediterranean pine forest understory?
作者: Gavinet J. ; Prévosto B. ; Fernandez C.
刊名: Forest Ecology and Management
ISSN: 0378-1127
出版年: 2016
卷: 381 起始页码: 289
结束页码: 296
语种: 英语
英文关键词: Nurse shrubs
; Oak regeneration
; Pine diversification
; Plant–plant interaction
; Seedling survival
Scopus关键词: Agriculture
; Land use
; Nursing
; Reforestation
; Mediterranean ecosystem
; Mediterranean pines
; Oak regeneration
; Performance rankings
; Pine diversification
; Plant interactions
; Seedling survival
; Survival and growth
; Forestry
; coniferous forest
; deciduous tree
; grass
; growth rate
; interspecific interaction
; Mediterranean environment
; regeneration
; seedling establishment
; shrub
; survival
; understory
; vegetation cover
; France
; Pinus halepensis
英文摘要: Shrubs have been shown to facilitate tree seedling establishment in open Mediterranean ecosystem habitats, but their effects in forests have been much less explored. We investigated the role played by shrubs in seedling emergence, survival and growth for two co-occurring oak species – Quercusilex and Quercuspubescens – in the understory of clear Aleppo pine stands (10 m2/ha). Acorns of both species were sown in two sites in South-East France that contrasted in terms of former land-use (pastoral vs agricultural), soil thickness (shallow vs deep) and type of understory (shrubs + grass vs only shrubs). Oak seedlings had a higher survival and growth on the former agricultural site with deeper soil. In general, the more stress-tolerant Q. ilex performed better than Q. pubescens. In the harsher site, seedling survival decreased with grass cover but increased with shrub cover. Shrub and grass cover decreased seedling diameter and had no effect on seedling height. In the more fertile site, shrub cover had no influence on seedling survival but had a species-specific effect on seedling growth: shrubs mostly competed with Q. ilex but ameliorated Q. pubescens growth, leading to changes in the two species performance ranking at high shrub cover. We conclude that shrubs can act as nurses for oak seedling establishment in pine forest understory, particularly in harsh conditions and for stress-intolerant species. In harsh conditions, shrub cover should be factored in as a way to promote pine forest diversification toward mixed pine–oak stands. © 2016 Elsevier B.V. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/64665
Appears in Collections: 影响、适应和脆弱性
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作者单位: Institut national de Recherche en Sciences et Technologies pour l'Environnement et l'Agriculture (Irstea), 3275 Route de Cézanne, Aix-en-Provence, France; Institut Méditerranéen de Biodiversité et d’Écologie marine et continentale (IMBE), Aix–Marseille Université, CNRS, IRD, Université d'Avignon, UMR 7263, 3 Place Victor-Hugo, Marseille Cedex 3, France
Recommended Citation:
Gavinet J.,Prévosto B.,Fernandez C.. Do shrubs facilitate oak seedling establishment in Mediterranean pine forest understory?[J]. Forest Ecology and Management,2016-01-01,381