DOI: 10.1016/j.foreco.2013.05.017
Scopus记录号: 2-s2.0-84878690502
论文题名: Planting density affects growth and water-use efficiency depending on site in Populus deltoides × P. nigra
作者: Toillon J. ; Fichot R. ; Dallé E. ; Berthelot A. ; Brignolas F. ; Marron N.
刊名: Forest Ecology and Management
ISSN: 0378-1127
出版年: 2013
卷: 304 起始页码: 345
结束页码: 354
语种: 英语
英文关键词: Biomass production
; Bulk leaf carbon isotope discrimination (δ13C)
; Genotype×Environment interactions
; Phenotypic plasticity
; Poplar
; Short-rotation coppice
Scopus关键词: Biomass productions
; Leaf carbon isotopes
; Phenotypic plasticity
; Poplar
; Short rotation coppice
; Biomass
; Carbon
; Efficiency
; Isotopes
; Nitrogen
; Rotation
; Forestry
; biomass
; coppice
; deciduous forest
; genotype-environment interaction
; growing season
; growth rate
; interspecific competition
; light availability
; phenotypic plasticity
; plantation forestry
; site characterization
; soil fertility
; water availability
; Biomass
; Carbon
; Efficiency
; Forestry
; Isotopes
; Nitrogen
; Plasticity
; Populus
; Production
; Rotation
; Populus
; Populus deltoides
; Populus nigra
英文摘要: Poplar coppice plantations for biomass production can be conducted under either short rotation coppice (SRC) or short rotation forestry (SRF) systems, depending on planting density and rotation length. It is likely that differences in planting density affect tree physiology through competition for resource acquisition, including light, water and nutrients. In this paper, we hypothesized that the effects of planting density on growth and water-use efficiency (assessed through bulk leaf carbon isotope discrimination, δ13C) in poplar depend on site characteristics in terms of soil fertility and water availability. To test this hypothesis, 56 Populus deltoides×P. nigra genotypes were planted under both SRC and SRF and replicated at two sites differing for pedoclimatic conditions. At the most favorable site for growth, trees grown at the higher density (SRC) displayed higher stem height, lower stem circumference, higher specific leaf area, higher mass-based leaf nitrogen contents and higher δ13C, indicating that increased tree density mainly accentuated competition for light. Under less favorable conditions, trees grown under SRC still displayed lower stem circumference, higher specific leaf area and higher mass-based leaf nitrogen contents. However, stem height remained unaffected by increasing planting density while δ13C was lower, likely because of increased competition for water availability. Genotypic rankings across planting densities were overall conserved while they were significantly modified across sites, suggesting that rankings for genotypic performances were much less affected by planting density than by site. Realized growth measured after 2years (height and circumference) was weakly correlated with δ13C, but a negative relationship between δ13C and growing season leaf increment rate was observed in most cases. The absence of trade-off between growth and water-use efficiency combined with the large genotypic variations observed for these traits confirms the potential for selecting genotypes with high water-use efficiency without counter-selecting on biomass production in P. deltoides×P. nigra. © 2013 Elsevier B.V. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/66474
Appears in Collections: 影响、适应和脆弱性
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作者单位: INRA, UMR 1137 'Ecologie et Ecophysiologie Forestières' (EEF), Route d'Amance, F-54280 Champenoux, France; Université de Lorraine, UMR 1137 'Ecologie et Ecophysiologie Forestières' (EEF), F-54500 Vandœuvre-lès-Nancy, France; Université d'Orléans, UFR-Faculté des Sciences, UPRES EA 1207 'Laboratoire de Biologie des Ligneux et des Grandes Cultures' (LBLGC), Rue de Chartres, BP 6759, F-45067 Orléans, France; INRA, USC 1328, 'Arbres et Réponses aux Contraintes Hydriques et Environnementales' (ARCHE), Rue de Chartres, BP 6759, F-45067 Orléans, France; Institut Technologique FCBA, 60 route de Bonnencontre, F-21170 Charrey-sur-SaÔne, France
Recommended Citation:
Toillon J.,Fichot R.,Dallé E.,et al. Planting density affects growth and water-use efficiency depending on site in Populus deltoides × P. nigra[J]. Forest Ecology and Management,2013-01-01,304