Water balance, transpiration and canopy conductance in two beech stands

Granier, André; Biron, Philippe; Lemoine, Damien

doi:10.1016/s0168-1923(99)00151-3

Cited by 377 publications

(283 citation statements)

References 28 publications

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“…The coupling (1 -Ω) between the forest "Aelmoeseneie" and the atmosphere was rather strong, Storage terms in a deciduous forest 539 and amounted on average 0.10 for the period August 15-20, which is within the range (0.05-0.2) observed by Granier et al [7] for a beech forest. Similar values were also found for a beech forest in Germany [8,9].…”

Section: Storage and Big Leaf Evapotranspirationsupporting

confidence: 69%

Energy balance storage terms and big-leaf evapotranspiration in a mixed deciduous forest

Samson

Lemeur²

2001

Ann. For. Sci.

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-Five different heat storage terms were studied in a mixed deciduous forest. All terms should be taken into account for the calculation of the overall heat storage, because they all can be significant during certain weather conditions and hours. Heat storage in biomass is estimated using surface temperatures measured with an infrared radiometer, which seems to be a good method. The often neglected photosynthetic heat storage may not be omitted. On a seasonal basis soil heat storage seems to be the most important term. The overall heat storage shows a small tendency for releasing heat to the atmosphere during fall. Fluctuations in overall heat storage are a result of complex changes of several climatic parameters. Due to the high degree of coupling of the forest to the atmosphere, accurate measurements of overall heat storage for the determination of big leaf forest evapotranspiration are not of the utmost importance. energy storage / deciduous forest / evapotranspiration / infrared radiometer / coupling Résumé -Détermination des termes du bilan d'énergie et calcul de l'évapotranspiration par un modèle « big-leaf » en peuplement feuillu mélangé. Cinq termes différents du bilan d'énergie ont été étudiés dans un peuplement feuillu mélangé. Etant donné que chacun de ces termes peut être significatif en fonction de l'heure et des conditions climatiques, ils doivent tous être pris en compte pour un calcul précis. L'énergie stockée dans la biomasse a été estimée à partir de la température de surface, mesurée à l'aide d'un radiomètre infrarouge. La méthode donne de bons résultats. Le stock d'énergie photosynthétique est non négligeable quoique souvent omis. Sur une base saisonnière, le stock d'énergie dans le sol est le terme le plus important. Lors de la chute des feuilles, on observe un flux positif d'énergie de l'écosystème vers l'atmosphère. Les variations du stock total d'énergie dans l'écosystème sont sous le contrôle d'un ensemble complexe de plusieurs paramètres climatiques. Cependant, étant donné le degré de couplage élevé entre la forêt et l'atmosphère, la mesure précise du stock total d'énergie dans l'écosystème n'est pas des plus importants pour le calcul de l'évapotranspiration par un modèle « big-leaf ». stockage d'énergie / forêt feuillue / évapotranspiration / radiomètre infrarouge / couplage

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Section: Storage and Big Leaf Evapotranspirationsupporting

confidence: 69%

Energy balance storage terms and big-leaf evapotranspiration in a mixed deciduous forest

Samson

Lemeur²

2001

Ann. For. Sci.

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“…A decrease in sapwood water content is associated with a decrease in specific conductivity (Puritch, 1971;Edwards and Jarvis, 1982) and sap flow (Granier et al, 2000). Whereas our methods did not distinguish between water being transported in the tracheids and extracellular water (which is not being transported), the reduction in moisture content cannot be accounted for by extracellular water alone.…”

Section: Wood Propertymentioning

confidence: 68%

Influence of Bravo fungicide applications on wood density and moisture content of Swiss needle cast affected Douglas-fir trees

Johnson

Gartner

Maguire

et al. 2003

Forest Ecology and Management

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“…The intensive transpiration and dense root system of beech result in the effective depletion of soil water (Čermák et al 1993;Schume et al 2004). Beech stands show high transpiration rates under both humid and partly dry summer climates in Central Europe (Granier et al 2000), with transpiration rates varying regionally from 213 to 421 mm per year (Schipka et al 2005), making beech a superior competitor for water (Schume et al 2004). This assumption was supported by the observed relationship between EIV for moisture and altitude and its noticeable similarity with the relationship between species richness and altitude.…”

Section: Interspecific Competition By Beechmentioning

confidence: 99%

Species Richness Pattern along Altitudinal Gradient in Central European Beech Forests

et al. 2013

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The unimodal species richness-altitude distribution pattern seems to be universal. To investigate the validity of this phenomenon in homogeneous substrate and vegetation conditions, we sampled beech-dominated forests in five volcanic mountain ranges in the Western Carpathians. European beech (Fagus sylvatica L.) formed monodominant closed-canopy stands at altitudes from 300 to 1,200 m. Along this gradient, the influence of beech on understory plant species richness was expected to be strong and uniform. The shape of the species richness-altitude relationship was analyzed for three datasets: herb layer, shrub layer, and both layers merged together. Contrary to prediction, the studied species richness-altitude relationship was inversely unimodal, with a minimum at intermediate altitudes. Quadratic regression models were statistically significant for all three datasets (P<0.001) and the explained variability ranged from 12 % to 20 %. The possible explanation for the observed pattern is twofold. In the central part of the altitudinal gradient, low species richness is due to strong competition by monodominant beech with accumulation of leaf litter and uptake soil resources, mainly water. This influence is somewhat released towards the margins of the gradient. Secondly, the species pool from the neighbouring communities increases species richness only in the lower parts of the altitudinal gradient.

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Water balance, transpiration and canopy conductance in two beech stands

Cited by 377 publications

References 28 publications

Energy balance storage terms and big-leaf evapotranspiration in a mixed deciduous forest

Energy balance storage terms and big-leaf evapotranspiration in a mixed deciduous forest

Influence of Bravo fungicide applications on wood density and moisture content of Swiss needle cast affected Douglas-fir trees

Species Richness Pattern along Altitudinal Gradient in Central European Beech Forests

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