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Leaf area index development in temperate oak and beech forests is driven by stand characteristics and weather conditions

(2011) TREES-STRUCTURE AND FUNCTION. 25(5). p.935-946
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Abstract
Using data from 20 even-aged and homogeneous mature beech and oak study plots in Flanders (Northern Belgium), an analysis of the empirical relationships between the rates of leaf area index (LAI) change throughout the leaf development of 2008 and stand, site and meteorological variables was performed. Species-specific multiple linear regressions were fitted between the rates of LAI change and the predictors for two distinct periods from April until August. After a sharp increase in LAI following budburst, the seasonal LAI development for both species showed a marked period of stationary LAI development over all study plots. The cause for the cessation of LAI growth was assumed to be the decline of air temperature and radiation during this period. Later on, the rate of LAI development restarted similarly in every plot. The influence of weather on LAI development was high and its effects were different between species, with beech mostly affected by radiation and oak negatively related to minimal and maximal values of air temperature. Furthermore, our analysis suggested that stand structural (tree density and stand basal area for both species) and tree growth characteristics (average tree-ring width ratio for oak) variables were major drivers of the LAI development during early spring. Later during the growth period, stand variables became less predominant in affecting LAI development. Site quality variables affected LAI development to a lesser extent. The seasonal LAI development was found very similar among stands. This study adds a more accurate and comprehensive approach to the modelling of LAI development during leaf growth of two important European temperate deciduous forest species.
Keywords
BOREAL, CANOPY, PHENOLOGY, SEASONAL VARIABILITY, CARBON SEQUESTRATION, FAGUS-SYLVATICA, HEMISPHERICAL PHOTOGRAPHY, INTERANNUAL VARIABILITY, DECIDUOUS FOREST, NET ECOSYSTEM EXCHANGE, Quercus robur, Phenology, Model, Seasonal leaf area course, Hemispherical photography, Fagus sylvatica

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Chicago
Bequet, Raphael, Matteo Campioli, Vincent Kint, Dries Vansteenkiste, Bart Muys, and Reinhart Ceulemans. 2011. “Leaf Area Index Development in Temperate Oak and Beech Forests Is Driven by Stand Characteristics and Weather Conditions.” Trees-structure and Function 25 (5): 935–946.
APA
Bequet, R., Campioli, M., Kint, V., Vansteenkiste, D., Muys, B., & Ceulemans, R. (2011). Leaf area index development in temperate oak and beech forests is driven by stand characteristics and weather conditions. TREES-STRUCTURE AND FUNCTION, 25(5), 935–946.
Vancouver
1.
Bequet R, Campioli M, Kint V, Vansteenkiste D, Muys B, Ceulemans R. Leaf area index development in temperate oak and beech forests is driven by stand characteristics and weather conditions. TREES-STRUCTURE AND FUNCTION. 2011;25(5):935–46.
MLA
Bequet, Raphael, Matteo Campioli, Vincent Kint, et al. “Leaf Area Index Development in Temperate Oak and Beech Forests Is Driven by Stand Characteristics and Weather Conditions.” TREES-STRUCTURE AND FUNCTION 25.5 (2011): 935–946. Print.
@article{2941248,
  abstract     = {Using data from 20 even-aged and homogeneous mature beech and oak study plots in Flanders (Northern Belgium), an analysis of the empirical relationships between the rates of leaf area index (LAI) change throughout the leaf development of 2008 and stand, site and meteorological variables was performed. Species-specific multiple linear regressions were fitted between the rates of LAI change and the predictors for two distinct periods from April until August. After a sharp increase in LAI following budburst, the seasonal LAI development for both species showed a marked period of stationary LAI development over all study plots. The cause for the cessation of LAI growth was assumed to be the decline of air temperature and radiation during this period. Later on, the rate of LAI development restarted similarly in every plot. The influence of weather on LAI development was high and its effects were different between species, with beech mostly affected by radiation and oak negatively related to minimal and maximal values of air temperature. Furthermore, our analysis suggested that stand structural (tree density and stand basal area for both species) and tree growth characteristics (average tree-ring width ratio for oak) variables were major drivers of the LAI development during early spring. Later during the growth period, stand variables became less predominant in affecting LAI development. Site quality variables affected LAI development to a lesser extent. The seasonal LAI development was found very similar among stands. This study adds a more accurate and comprehensive approach to the modelling of LAI development during leaf growth of two important European temperate deciduous forest species.},
  author       = {Bequet, Raphael and Campioli, Matteo and Kint, Vincent and Vansteenkiste, Dries and Muys, Bart and Ceulemans, Reinhart},
  issn         = {0931-1890},
  journal      = {TREES-STRUCTURE AND FUNCTION},
  keyword      = {BOREAL,CANOPY,PHENOLOGY,SEASONAL VARIABILITY,CARBON SEQUESTRATION,FAGUS-SYLVATICA,HEMISPHERICAL PHOTOGRAPHY,INTERANNUAL VARIABILITY,DECIDUOUS FOREST,NET ECOSYSTEM EXCHANGE,Quercus robur,Phenology,Model,Seasonal leaf area course,Hemispherical photography,Fagus sylvatica},
  language     = {eng},
  number       = {5},
  pages        = {935--946},
  title        = {Leaf area index development in temperate oak and beech forests is driven by stand characteristics and weather conditions},
  url          = {http://dx.doi.org/10.1007/s00468-011-0568-4},
  volume       = {25},
  year         = {2011},
}

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