DOI: 10.1016/j.foreco.2016.03.040
Scopus记录号: 2-s2.0-84962314016
论文题名: Effects of reduced-impact selective logging on palm regeneration in Belize
作者: Arevalo B. ; Valladarez J. ; Muschamp S. ; Kay E. ; Finkral A. ; Roopsind A. ; Putz F.E.
刊名: Forest Ecology and Management
ISSN: 0378-1127
出版年: 2016
卷: 369 起始页码: 155
结束页码: 160
语种: 英语
英文关键词: Arecaceae
; Biodiversity
; Forest disturbance
; Forest management
; Tropical silviculture
Scopus关键词: Biodiversity
; Forestry
; Harvesting
; Landing
; Reforestation
; Timber
; Arecaceae
; Ecological distances
; Forest disturbances
; Logging infrastructure
; Non-metric multi-dimensional scaling
; Reduced-impact logging
; Seedling regeneration
; Tropical silvicultures
; Logging (forestry)
; abundance
; Bayesian analysis
; biodiversity
; environmental disturbance
; evergreen tree
; forest canopy
; forest management
; selective logging
; silviculture
; timber
; tropical region
; Belize [Central America]
; Arecaceae
; Swietenia macrophylla
英文摘要: To assess the impacts of a low-intensity selective timber harvest on a palm community in Belize, we mapped logging infrastructure (i.e., roads, log landings, skid trails, and stumps) and measured palm regeneration 1 year after a timber harvest carried out using reduced-impact logging (RIL) practices. We sampled palms across a gradient of increasing harvest impact severity from areas not directly affected by logging, in felling gaps, on secondary and primary skid trails, and on log landings. We used generalised linear mixed-effect models fitted in a Bayesian framework and applied a non-metric multi-dimensional scaling of the ecological distances between sites to evaluate differences in palm seedling regeneration density and species composition, respectively. The harvest of an average of 2.5 trees ha-1 caused 0.4% of the forest to be converted to log landings, 0.7% and 3.6% to roads and skid trails, and 2.3% to felling gaps, which left 93.0% of the 350 ha harvest block with no direct impacts of logging. The difference in abundance and species composition of palm regeneration in unlogged areas compared to felling gaps and skid trails was small, but log landings had markedly lower densities. These results highlight that the impacts of selective logging are minor at least where harvest intensities are low and RIL practices are employed. If further reductions in canopy opening and soil disturbance are desired, we recommend that logs be cable-yarded (i.e., winched) the final 20 m to skid trails instead of driving to the tree stumps. We estimate that implementation of this practice would reduce total skid trail coverage from 3.6% to 2.9% and overall forest disturbance from 7.0% to 6.3%. However, further reductions in disturbance might be inimical to the maintenance of palms and will certainly not favour regeneration of light-demanding commercial timber species (e.g., Swietenia macrophylla). © 2016 Elsevier B.V. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/64947
Appears in Collections: 影响、适应和脆弱性
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作者单位: Friends for Conservation Development, Chi-Ha Street, San Jose Succotz, Cayo District, Belize; University of Belize, Faculty of Science and Technology, Department of Biology, Belmopan, Belize; University of Belize Environmental Research Institute, Price Centre Road, Belmopan, Belize; The Forestland Group, Chapel HillNC, United States; Department of Biology, University of Florida, Gainesville, FL, United States
Recommended Citation:
Arevalo B.,Valladarez J.,Muschamp S.,et al. Effects of reduced-impact selective logging on palm regeneration in Belize[J]. Forest Ecology and Management,2016-01-01,369