DOI: 10.1016/j.foreco.2013.09.037
Scopus记录号: 2-s2.0-84888134062
论文题名: Pervasive, long-lasting impact of historical logging on composition, diversity and above ground carbon stocks in Afrotemperate forest
作者: Adie H. ; Rushworth I. ; Lawes M.J.
刊名: Forest Ecology and Management
ISSN: 0378-1127
出版年: 2013
卷: 310 起始页码: 887
结束页码: 895
语种: 英语
英文关键词: Above ground biomass
; Degradation
; Forest recovery
; Podocarpaceae
; Primary forest
; Secondary forest
Scopus关键词: Above ground biomass
; Forest recovery
; Podocarpaceae
; Primary forest
; Secondary forests
; Carbon
; Conservation
; Degradation
; Population statistics
; Recovery
; Secondary recovery
; Forestry
; aboveground biomass
; community composition
; coniferous tree
; environmental degradation
; forest canopy
; forest management
; logging (timber)
; old-growth forest
; secondary forest
; species diversity
; temperate forest
; Biomass
; Carbon
; Conservation
; Degradation
; Forestry
; Coniferophyta
; Magnoliophyta
; Podocarpaceae
英文摘要: Understanding the rate and extent of forest recovery from major disturbance events enable forest managers to establish conservation priorities and allocate limited resources for their management. We examined the extent to which Afrotemperate forest has recovered from widespread, stand-levelling logging that followed the European settlement of south eastern South Africa approximately 150years ago. We used plot-based tree census data to compare ecological characteristics (diversity, composition, structure) of primary, secondary and degraded Afrotemperate forests. Forests impacted by colonial logging events show no evidence of converging on the composition and above ground standing stock of old-growth forests. Primary forest canopies were dominated by two conifer species (Podocarpaceae) and a suite of long-lived pioneer angiosperms dominated the canopies of secondary forests. Old-growth canopy trees (≥20cmdbh) were taller (~26m vs ~16m) and had broader girths (~94cm vs ~54cm) compared with those in secondary forest. Canopy tree size differences translated to considerable (2 to 3-fold) differences in above ground carbon: we estimated that primary forest stores >240MgCha-1 compared with the range of 80.7-114.3MgCha-1 estimated for the two secondary forests and 84.3MgCha-1 for the degraded forest. Measures of rarefied species richness and diversity (Shannon exponential) were markedly lower for primary forest canopy trees, consistent with the proposition that the composition of Afrotemperate forests converges on podocarp dominance at the old-growth stage. In contrast, diversity measures for small (2.5-10.0cmdbh) and medium (10.1-19.9cmdbh) trees were noticeably higher in secondary and degraded forests indicating the considerable conservation value of these formerly disturbed forests. © 2013 Elsevier B.V. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/66312
Appears in Collections: 影响、适应和脆弱性
There are no files associated with this item.
作者单位: School of Life Sciences, University of KwaZulu-Natal, P/Bag X01, Scottsville 3209, South Africa; Ecological Advice Division, Ezemvelo KZN Wildlife, PO Box 13053, Cascades 3202, South Africa; Research Institute for the Environment and Livelihoods, Charles Darwin University, Darwin, NT 0909, Australia
Recommended Citation:
Adie H.,Rushworth I.,Lawes M.J.. Pervasive, long-lasting impact of historical logging on composition, diversity and above ground carbon stocks in Afrotemperate forest[J]. Forest Ecology and Management,2013-01-01,310