DOI: 10.1016/j.foreco.2017.05.058
Scopus记录号: 2-s2.0-85020394129
论文题名: Post-fire plant regeneration across a closed forest-savanna vegetation transition
作者: Araújo F.D.C. ; Tng D.Y.P. ; Apgaua D.M.G. ; Coelho P.A. ; Pereira D.G.S. ; Santos R.M.
刊名: Forest Ecology and Management
ISSN: 0378-1127
出版年: 2017
卷: 400 起始页码: 77
结束页码: 84
语种: 英语
英文关键词: Alternative stable states
; Diversity
; Fire disturbance
; Forest-savanna ecotones
; Structural change
; Vegetation dynamics
Scopus关键词: Dynamics
; Ecology
; Ecosystems
; Fires
; Forestry
; Plants (botany)
; Vegetation
; Alternative stable state
; Diversity
; Fire disturbance
; Forest-savanna ecotones
; Structural change
; Vegetation dynamics
; Reforestation
英文摘要: Fire is a major environmental factor influencing vegetation heterogeneity, with closed forest and savanna ecosystems having different management needs due to their different responses to fire disturbance. However, the differences in post-fire vegetation dynamics between these ecosystems have seldom been compared using a uniform set of parameters. Additionally, post-fire dynamics of forest-savanna ecotones is poorly characterized. With the hypothesis that closed forest, savannas and ecotones will exhibit different post-fire responses, we studied the vegetation diversity, structure and dynamics in an upland forest-savanna vegetation mosaic in Minas Gerais, Brazil following a fire that occurred in September 2011. In January 2012, we identified, tagged, and measured the basal diameter of all regenerating juvenile tree stems within forty-six 4 m2 plots in closed forest, savanna and ecotone vegetation, and conducted recensuses in 2013 and 2014. We modelled the relationship between short-term dynamics parameters (recruitment, mortality, basal area loss and gain, and the turnover and net changes in the number of individual stems and basal areas) and vegetation type. Species diversity was higher in closed forests and ecotones than in savanna. Across all vegetation types, stem density decreased and basal area increased. Parameters such as recruitment, net changes in the number of individuals, and the gain, loss and turnover in basal area did not differ across vegetation types. However, stem mortality was higher in closed forest and ecotones combined than in savannas, and the net change in the number of individuals was the lowest in the savanna. Overall, our results support that within a climatically-similar vegetation mosaic, closed forests exhibit different post-fire regeneration dynamics from savanna as expected. Ecotones exhibited post-fire responses and dynamics more similar to closed forests than to savanna, but more studies will be needed to establish if this pattern is applicable to other areas. Understanding the longer-term vegetation dynamics and plant regeneration patterns is a potential next step that will help inform fire management strategies for forest-savanna mosaics. © 2017 Elsevier B.V. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/64199
Appears in Collections: 影响、适应和脆弱性
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作者单位: Department of Forest Science, Federal University of Lavras, Av. Doutor Sylvio Menicucci, LavrasMinas Gerais, Brazil; College of Science and Engineering, James Cook University, McGregor Road, SmithfieldQueensland, Australia
Recommended Citation:
Araújo F.D.C.,Tng D.Y.P.,Apgaua D.M.G.,et al. Post-fire plant regeneration across a closed forest-savanna vegetation transition[J]. Forest Ecology and Management,2017-01-01,400