DOI: 10.1016/j.foreco.2013.10.045
Scopus记录号: 2-s2.0-84888219350
论文题名: Diagnosing the demographic balance of two light-demanding tree species populations in central Africa from their diameter distribution
作者: Engone Obiang N.L. ; Ngomanda A. ; Hymas O. ; Chézeauxl T. ; Picard N.
刊名: Forest Ecology and Management
ISSN: 0378-1127
出版年: 2014
卷: 313 起始页码: 55
结束页码: 62
语种: 英语
英文关键词: Aucoumea klaineana
; Diameter distribution
; Gabon
; Lophira alata
; Natural forest
; Population dynamics
Scopus关键词: Forestry
; Population dynamics
; Population statistics
; Aucoumea klaineana
; Diameter distributions
; Gabon
; Lophira alata
; Natural forests
; Population distribution
; diameter
; environmental disturbance
; evergreen tree
; growth modeling
; light availability
; pioneer species
; population dynamics
; population structure
; recruitment (population dynamics)
; shifting cultivation
; Biological Populations
; Forestry
; Statistics
; Central Africa
; Gabon
; Aucoumea klaineana
; Lophira alata
英文摘要: The diameter distribution of a tree species population in a natural forest reflects its demographic dynamics and the impact of past disturbances. A modal diameter distribution can be the mark of a demographic imbalance or it can be the consequence of a particular growth pattern. By comparing the observed diameter distribution with the one that follows from a reference growth model under the hypothesis of demographic balance, we diagnosed demographic balance. In a forest concession in Gabon before logging, an unbalanced diameter distribution was found for Aucoumea klaineana, a long-lived pioneer species and also a valuable commercial species. The Aucoumea klaineana population consisted of old trees without meaningful recruitment, thus indicating an ageing, declining population. In contrast, in the same concession, a balanced diameter distribution was found for Lophira alata, a pioneer to moderate light-demanding species. The history of this forest concession, once heavily populated and subsequently depleted from human perturbation (shifting cultivation), can be used to interpret these demographic statuses. These results reinforce the view of a forest that is constantly changing and shaped by past human perturbations, with the implication for its conservation that some kind of perturbation should be maintained. © 2013 Elsevier B.V. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/66153
Appears in Collections: 影响、适应和脆弱性
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作者单位: IRET, BP 13354 Libreville, Gabon; University College London, London, United Kingdom; Zoological Society of London, London, United Kingdom; Rougier-Gabon, ZI Oloumi, BP 130 Libreville, Gabon; CIRAD, UPR Bsef, 34398 Montpellier Cedex 5, France
Recommended Citation:
Engone Obiang N.L.,Ngomanda A.,Hymas O.,et al. Diagnosing the demographic balance of two light-demanding tree species populations in central Africa from their diameter distribution[J]. Forest Ecology and Management,2014-01-01,313