DOI: 10.1016/j.foreco.2017.02.049
Scopus记录号: 2-s2.0-85014782367
论文题名: Natural regeneration of trees in selectively logged forest in western Amazonia
作者: de Carvalho A.L. ; d'Oliveira M.V.N. ; Putz F.E. ; de Oliveira L.C.
刊名: Forest Ecology and Management
ISSN: 0378-1127
出版年: 2017
卷: 392 起始页码: 36
结束页码: 44
语种: 英语
英文关键词: Amazon
; Forest degradation
; Forest dynamics
; Natural forest management
; Reduced-impact logging
; Soil compaction
; Tropical forestry
Scopus关键词: Ecosystems
; Landing
; Logging (forestry)
; Reforestation
; Soil mechanics
; Soils
; Transportation
; Amazon
; Forest degradation
; Forest dynamics
; Natural forest management
; Reduced-impact logging
; Soil compaction
; Forestry
英文摘要: We evaluated the impacts of selective logging on tree regeneration one, four, and eight years after harvests in Antimary State Forest in the State of Acre, Brazil. We inventoried tree seedlings, saplings, and poles (>50 cm tall to <10 cm DBH) on secondary roads, log landing, and skid trails, as well as in the bole and crown zones of canopy gaps created by felling; for comparison we also sampled areas not affected directly by logging. We compared these habitats on the basis soil (physical) characteristics, canopy cover, and floristic composition. For areas one and four years after logging, we supplemented the ground-based information with aerial LiDAR data. By eight years post-logging the size class distributions of tree regeneration in all habitat types resembled those in unlogged areas, and densities were only lower in crown gaps. Eight years after logging, relative densities of pioneer trees were highest on secondary roads and log landings; no among habitat differences were observed in the relative densities of non-pioneer species at any time along the chronosequence. Tree species diversity (Fisher's alpha) converged on unlogged values on skid trails, bole gaps, and crown gaps at 8-years post-logging, but values remained lower on secondary roads and log landings. Canopy openness was greatest one year after logging, especially in log landings (mean 45.4 ± SE 4.5%) whereas four and eight years post-logging it did not exceed 10% and no differences were found among habitats. Soil bulk density was elevated relative to un-logged areas only on log landings one and four years after logging, and this difference disappeared by eight years post-logging. The total area disturbed by logging varied from 7.0% to 8.6% with nearly half of the totals in felling gaps (3.0–3.7%). © 2017 Elsevier B.V. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/64379
Appears in Collections: 影响、适应和脆弱性
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作者单位: Tropical Forest Science, National Institute for Amazon Research, Amazonas, Brazil; EMBRAPA – CPAF-ACRE, Caixa Postal 392, Rio Branco, Brazil; Department of Biology, University of Florida, Gainesville, FL, United States
Recommended Citation:
de Carvalho A.L.,d'Oliveira M.V.N.,Putz F.E.,et al. Natural regeneration of trees in selectively logged forest in western Amazonia[J]. Forest Ecology and Management,2017-01-01,392