DOI: 10.1016/j.foreco.2016.10.040
Scopus记录号: 2-s2.0-84994588813
论文题名: Thinning of loblolly pine plantations in subtropical Argentina: Impact on microclimate and understory vegetation
作者: Trentini C.P. ; Campanello P.I. ; Villagra M. ; Ritter L. ; Ares A. ; Goldstein G.
刊名: Forest Ecology and Management
ISSN: 0378-1127
出版年: 2017
卷: 384 起始页码: 236
结束页码: 247
语种: 英语
英文关键词: Atlantic Forest
; Life form
; Light demanding species
; Litter removal
; Species richness
Scopus关键词: Biodiversity
; Carbon
; Ecology
; Soil moisture
; Vegetation
; Atlantic forest
; Environmental conditions
; Life form
; Loblolly pine (pinus taeda l.)
; Loblolly pine plantations
; Silvicultural practices
; Species richness
; Understory vegetation
; Forestry
; air temperature
; biodiversity
; bulk density
; carbon cycle
; coniferous tree
; ecosystem function
; environmental conditions
; forest floor
; litter
; management practice
; microclimate
; plantation forestry
; sapling
; soil water
; solar radiation
; species richness
; subtropical region
; thinning
; understory
; vegetation cover
; water content
; Argentina
; Atlantic Forest
; Pinus taeda
英文摘要: During the last three decades, the area dedicated to tree plantations in northeast of Argentina has increased five-fold at the expense of the native semideciduous Atlantic Forest. Silvicultural practices such as thinning affect the understory and forest floor incrementing vegetation cover and diversity that may impact ecological functions such as carbon and nutrient cycling and provide food and shelter for wildlife. The aim of this study was to assess the effects of two thinning intensities (50% and 30% of individual removal), and litter removal in the 50% thinning treatment on the understory vegetation of loblolly pine (Pinus taeda L.). The high thinning intensity and the control without thinning were intended to recreate existing management practices in the region. The study was carried out in three Pinus taeda plantations (replicates). Environmental conditions and cover of native understory vegetation were measured during two years after thinning. Canopy openness, solar radiation, air temperature and soil bulk density were higher in thinning treatments than in control plots while soil water content was lower. Vegetation cover and richness increased with intensity of the thinning treatments. Tree saplings differed in the responses according to light requirements and height. Light-demanding species and individuals taller than 0.5 m were responsive to thinning increasing coverage, abundance and height, while smaller saplings were more abundant in control plots. No effects of litter removal were observed in understory species richness and plant cover. This study provides evidence that thinning on pine plantations in Northeastern Argentina can contribute in maintaining biodiversity and related ecosystem functions of subtropical forests. Management practices involving lower plantation densities and fewer interventions should be developed to achieve more positive effects. © 2016 Elsevier B.V. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/64567
Appears in Collections: 影响、适应和脆弱性
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作者单位: Laboratorio de Ecología Forestal y Ecofisiología, Instituto de Biología Subtropical, CONICET-UNaM, Puerto Iguazú, Misiones, Argentina; Arkansas Forest Resources Center, University of Arkansas, Monticello, AR, United States; Laboratorio de Ecología Funcional, Departamento de Ecología Genética y Evolución, Instituto IEGEBA, CONICET-UBA, Buenos Aires, Argentina
Recommended Citation:
Trentini C.P.,Campanello P.I.,Villagra M.,et al. Thinning of loblolly pine plantations in subtropical Argentina: Impact on microclimate and understory vegetation[J]. Forest Ecology and Management,2017-01-01,384