DOI: 10.1016/j.foreco.2012.09.041
Scopus记录号: 2-s2.0-84869888431
论文题名: Prescribed burning and browsing to control tree encroachment in southern European heathlands
作者: Ascoli D. ; Lonati M. ; Marzano R. ; Bovio G. ; Cavallero A. ; Lombardi G.
刊名: Forest Ecology and Management
ISSN: 0378-1127
出版年: 2013
卷: 289 起始页码: 69
结束页码: 77
语种: 英语
英文关键词: Aspen
; Browsing
; Conservation management
; Heathland
; Prescribed burning
; Tree encroachment
Scopus关键词: Aspen
; Browsing
; Conservation management
; Heathlands
; Prescribed burning
; Tree encroachment
; Fires
; Recovery
; Vegetation
; Reforestation
; abandoned land
; browsing
; conservation management
; deciduous forest
; experimental design
; heathland
; management practice
; mortality
; prescribed burning
; regeneration
; scrub
; stand structure
; stem
; vegetation dynamics
; Conservation
; Europe
; Forestry
; Plants
; Populus
; Populus Tremula
; Prescribed Burning
; Reforestation
; Europe
; Calluna
; Calluna vulgaris
; Capra hircus
; Molinia arundinacea
; Populus
; Populus tremula
英文摘要: Land abandonment and the cessation of traditional management practices is favouring scrubland and forest expansion throughout Europe, reducing the extent of many semi-natural open habitats of a high ecological value. Tree encroachment is threatening several Calluna vulgaris (L.) Hull heathlands. The objective of this study was to analyze vegetation dynamics resulting from an experiment designed to test management options aiming at controlling the encroachment of Populus tremula (aspen) and favouring heathland recovery. The research was conducted at Vauda Heath, North-western Italy, from 2005 till 2009. We studied prescribed burning and goat browsing, both alone or in combination, assessing their effects on structure and density of encroaching trees, as well as on heathland main species, C. vulgaris and Molinia arundinacea. Treatments were applied to 42 experimental units (300-650m2 each), with each treatment combination replicated from six to twelve times (including untreated controls).Prescribed burning and browsing showed complementary effects on post-fire vegetation development. Both back and head fire behaviors were effective in inducing stem mortality of aspen and rejuvenating the heathland, but in the absence of measures to control post-fire suckering, aspen tended to recover the pre-treatment stand structure. A higher fire frequency (annual winter fire) controlled tree encroachment, but hindered Calluna recovery, whilst favouring competing grass species. Goat browsing alone was initially able to reduce tree growth and slow down woodland expansion, until aspen individuals reached an escape size of 1.5. m in height. Prescribed burning followed by yearly goat browsing effectively contained tree encroachment while maximizing post-fire heathland regeneration. This integrated approach thus proved its efficacy also at the southern limits of Calluna distributional area. © 2012 Elsevier B.V. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/66820
Appears in Collections: 影响、适应和脆弱性
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作者单位: University of Torino, Department of Agriculture, Forest and Food Sciences, Via Leonardo Da Vinci 44, 10095 Grugliasco, TO, Italy
Recommended Citation:
Ascoli D.,Lonati M.,Marzano R.,et al. Prescribed burning and browsing to control tree encroachment in southern European heathlands[J]. Forest Ecology and Management,2013-01-01,289