DOI: 10.1016/j.foreco.2012.12.003
Scopus记录号: 2-s2.0-84873036568
论文题名: Pine growth response to processionary moth defoliation across a 40-year chronosequence
作者: Jacquet J.-S. ; Bosc A. ; O'Grady A.P. ; Jactel H.
刊名: Forest Ecology and Management
ISSN: 0378-1127
出版年: 2013
卷: 293 起始页码: 29
结束页码: 38
语种: 英语
英文关键词: Age
; Carbon
; Forest productivity
; Herbivory
; Nitrogen
; Nutrient
Scopus关键词: Age
; Carbon resources
; Chronosequences
; Field experiment
; Forest productivity
; Growth response
; Herbivory
; Nitrogen content
; Physiological process
; Pine growth
; Pine processionary moth
; Pine trees
; Pinus pinaster
; Radial growth
; Stem growth
; Underlying mechanism
; Carbohydrates
; Carbon
; Nitrogen
; Nutrients
; Productivity
; Forestry
; carbon
; chronosequence
; coniferous tree
; defoliation
; forestry production
; growth response
; herbivory
; moth
; nitrogen
; nutrient
; pest outbreak
; pest species
; physiological response
; source-sink dynamics
; Carbohydrates
; Carbon
; Forestry
; Nitrogen
; Nutrients
; Productivity
; France
; Hexapoda
; Lepidoptera
; Pinus pinaster
; Thaumetopoea pityocampa
英文摘要: Estimating the impact of pest insects on forest productivity requires a better understanding of host tree responses. While many studies have focused on juvenile trees, studying the impacts of defoliation on trees of increasing age helps to better characterize underlying mechanisms regulating growth responses to defoliation. During winter 2009-2010 a large outbreak of pine processionary moth occurred in Southwestern France. We established a field experiment to examine the effects of pine processionary moth defoliation varying from 25% to 100% on the growth of Pinus pinaster in stands ranging from 3 to 40. years old. Our results showed that pine processionary moth defoliation resulted in significant loss of radial growth for at least two years following defoliation. Stem growth loss in the first and second years was proportional to defoliation intensity and ranged from 32% to 93% in year 1, and from 17% to 68% in year 2. Stem growth was most reduced in older trees. Carbohydrates and nitrogen contents in needles and stem sapwood were also affected by defoliation. Our results suggest that defoliation affects stem growth through nitrogen and carbon resource limitation and that stem growth would be a lower priority sink for resources than other physiological processes in pine trees. © 2012 Elsevier B.V. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/66715
Appears in Collections: 影响、适应和脆弱性
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作者单位: INRA, UMR1202 BIOGECO, F-33612 Cestas, France; Univ. Bordeaux, UMR 1202, BIOGECO, F-33405 Talence, France; INRA, UR1263 EPHYSE, F-33140 Villenave d'Ornon, France; CSIRO Ecosystem Sciences, Private Bag 12, Hobart, Tas. 7001, Australia
Recommended Citation:
Jacquet J.-S.,Bosc A.,O'Grady A.P.,et al. Pine growth response to processionary moth defoliation across a 40-year chronosequence[J]. Forest Ecology and Management,2013-01-01,293