DOI: 10.1016/j.foreco.2014.03.012
Scopus记录号: 2-s2.0-84929141835
论文题名: Natural establishment of Eucalyptus globulus Labill. in burnt stands in Portugal
作者: Águas A. ; Ferreira A. ; Maia P. ; Fernandes P.M. ; Roxo L. ; Keizer J. ; Silva J.S. ; Rego F.C. ; Moreira F.
刊名: Forest Ecology and Management
ISSN: 0378-1127
出版年: 2014
卷: 323 起始页码: 47
结束页码: 56
语种: 英语
英文关键词: Establishment
; Eucalyptus globulus
; Naturalization
; Post-fire management
; Seed
; Wildfire
Scopus关键词: Agricultural machinery
; Agriculture
; Deforestation
; Fires
; International law
; Probability
; Establishment
; Eucalyptus globulus
; Naturalization
; Post-fire
; Wildfire
; Seed
; cohort analysis
; coniferous tree
; dicotyledon
; disturbance
; fire management
; forest fire
; forest management
; invasive species
; management practice
; naturalization
; plantation
; seedling establishment
; selective logging
; size distribution
; size structure
; stand dynamics
; tillage
; understory
; wildfire
; Portugal
英文摘要: Exotic tree species are increasingly common in many regions of the world and at least some species are becoming naturalized in the regions where they were introduced. Disturbances like fire may be at the origin or accelerate the naturalization of these species. Portugal holds one of the largest areas of exotic Eucalyptus globulus plantations in the world and is one of the countries most affected by forest fires. These two facts have triggered the present research. This study aimed at characterising medium-term natural establishment of E. globulus plants originated from seeds under natural conditions in burnt planted forests (pure E. globulus stands, pure Pinus pinaster stands, and mixed stands of both species), and at analysing factors associated with this establishment. Occurrence, abundance and height of naturally established E. globulus plants were characterized in 284 sites distributed in burnt areas, across Central and Northern Portugal, 5-7years after wildfire. Generalized linear models were used to assess the influence of stand type, regional productivity potential, and post-fire management practices on occurrence probability, density, and median height of sampled E. globulus individuals. The influence of these explanatory variables on the structure (in terms of size class distribution) of naturally established E. globulus cohort was examined using analysis of similarity and non-metric multidimensional scaling. Naturally established E. globulus plants were present in 93.1%, 19.0% and 98.6% of samples in pure E. globulus, pure P. pinaster and mixed stands, respectively. Cohort median density was 0.20plantsm-2 and maximum density was 4.55plantsm-2. Median height of plants was 2.0m and 95.3% of them had h>1.30m and DBH≤5cm. Establishment probability, density and median height were highest in the most productive regions. Three post-fire management operations had a significant influence on the response variables: (i) salvage logging was associated with a higher density; (ii) tillage was associated with a lower density and a smaller median height; (iii) understorey removal was associated with a lower occurrence probability. Tillage was the only studied factor influencing the size structure of spontaneously established cohort, eliminating larger plants. This study showed that stand type, productivity region and post-fire management operations might have significantly influenced the natural establishment of E. globulus in burnt areas, and consequently the species naturalization process in Portugal. The implications of these findings for management are discussed. © 2014. Published by Elsevier B.V. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/65968
Appears in Collections: 影响、适应和脆弱性
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作者单位: Universidade de Lisboa, Instituto Superior de Agronomia, Centro de Ecologia Aplicada Prof Baeta Neves, InBio Tapada da Ajuda, 1349-017 Lisboa, Portugal; Instituto Politécnico de Leiria, Escola Superior de Educação e Ciências Sociais, 2411-901 Leiria, Portugal; CESAM, Departamento de Ambiente e Ordenamento, Universidade de Aveiro, 3810-193 Aveiro, Portugal; Universidade de Trás-os-Montes e Alto Douro, Centro de Investigação e de Tecnologias Agro-Ambientais e Biológicas (CITAB), Departamento de Ciências Florestais e Arquitectura Paisagista (CIFAP), Apartado 1013, 5001-801 Vila Real, Portugal; Instituto Politécnico de Coimbra, Escola Superior Agrária, 3040-316 Coimbra, Portugal
Recommended Citation:
Águas A.,Ferreira A.,Maia P.,et al. Natural establishment of Eucalyptus globulus Labill. in burnt stands in Portugal[J]. Forest Ecology and Management,2014-01-01,323