Einfluß der Jahreswitterung 1959 auf Zellartverteilung, faserlänge und Gefäßweite verschiedener Holzarten

Knigge, Wolfgang; Schulz, Horst

doi:10.1007/bf02609688

Cited by 30 publications

(8 citation statements)

References 2 publications

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“…Carlquist 1975). During an extremely dry summer a decrease of vessel diameter in beech and oak has been observed by Knigge and Schulz (1961). Barner (1963) obtained for poplar growing under moisture stress an increase of vessel proportion and a decrease of vessel size.…”

Section: Discussionmentioning

confidence: 90%

On the Structural Changes in Wood and Bark of a Salt-damaged Horsechestnut Tree

Eckstein¹,

Líese²,

Parameswaran³

1976

Holzforschung

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Section: Discussionmentioning

confidence: 90%

On the Structural Changes in Wood and Bark of a Salt-damaged Horsechestnut Tree

Eckstein¹,

Líese²,

Parameswaran³

1976

Holzforschung

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“…It is, however, largely unknown which environmental factors are manifested in the vessel size. From earlier studies based on small statistical sample sizes (Knigge and Schulz 1961;Eckstein et al 1977) it was assumed that the vessel size was controlled by water supply. This assumption has to be verified and, if it is true, the relationship between rainfall and vessel formation needs to be physiologically explained.…”

Section: Discussionmentioning

confidence: 99%

The variability of vessel size in beech (Fagus sylvatica L.) and its ecophysiological interpretation

Sass

Eckstein

1995

Trees

138

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Abstract. The vessel areas of ten beech trees growing on a dry site were measured separately for all tree rings using automatic image analysis. These data were correlated with the monthly amount of precipitation from the July prior to the growing season until the August of the current growing season. It is evident that vessel formation at the beginning of cambial activity is mainly controlled by internal factors. The rainfall in the previous summer and autumn and in the contemporary May had only a slight influence. Vessel formation towards the end of the cambial activity is strongly influenced by the July rainfall and is thus determined to a greater degree by external factors. These results are discussed on the basis of hypotheses of tree physiology.

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“…It has been reported by numerous investigators that irrigation in summer and early fall results in higher wood specific gravity because of greater latewood production [40]. Other studies, some of them also on hardwoods, investigated wood production in years with climate extremes and have deduced some moisture effects on wood quality [17].…”

Section: Discussionmentioning

confidence: 99%

High-resolution analysis of radial growth and wood density in Eucalyptus nitens, grown under different irrigation regimes

2002

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-Wood density is the most important determinant of wood quality and a critical factor in short rotation forestry. Daily radial growth of six-year-old Eucalyptus nitens trees were monitored on a two hectare plantation in south-eastern Tasmania using point dendrometers, under different irrigation regimes. At the end of the second growing season 12-mm cores were extracted from the trees and processed for high-resolution wood density using SilviScan-2. The dendrometer measurements were utilized to rescale wood density on a time axis. In general, lower density was formed early in the growing season, and higher wood density later. The irrigated-droughted trees showed an obvious relationship between wood density and soil water deficits with the density decreasing in response to water stress releases. The density decrease was accompanied by acceleration in daily increment. With the presented approach the annual level is no longer the basis of analysis. This opens new opportunities for genotype × environmental interaction studies of trees, which is of particular importance in clonal forestry.wood density / dendrometer / wood quality / irrigation / cambium Résumé -Analyse haute résolution de la croissance radiale et de la densité du bois d'Eucalyptus nitens, croissant sous divers régimes d'irrigation. La densité du bois est le plus important déterminant de la qualité du bois et un facteur critique pour la sylviculture en courte rotation. La croissance radiale journalière d'Eucalyptus nitens, âgé de 6 ans, a été suivie dans une plantation de 2 hectares dans le Sud-Est de la Tasmanie en utilisant des dendromètres à point, sous différents régimes d'irrigation. À la fin de la seconde saison de végétation, des carottes de 12 mm ont été prélevées sur les arbres et une mesure haute résolution de la densité du bois a été réalisée à l'aide d'un SilviScan-2. Les mesures à l'aide du dendromètre ont été utilisées pour recaler la densité du bois sur un axe de temps. En général, le bois ayant la densité la plus faible a été formé tôt dans la saison de végétation, et le bois de haute densité plus tardivement. Les arbres irrigués ou soumis à la sécheresse montraient une relation évidente entre la densité du bois et le déficit hydrique du sol avec une densité diminuant en réponse à une réduction du stress hydrique. La diminution de densité a été accompagnée par une accélération de l'accroissement journalier. Selon l'approche présentée, le niveau annuel ne sera plus la base de l'analyse. Ceci ouvre de nouvelles opportunités pour des études de l'interaction génotype × environnement sur des arbres, ce qui est d'une importance primordiale en foresterie clonale. densité du bois / dendromètre / qualité du bois / irrigation / cambium

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Einfluß der Jahreswitterung 1959 auf Zellartverteilung, faserlänge und Gefäßweite verschiedener Holzarten

Cited by 30 publications

References 2 publications

On the Structural Changes in Wood and Bark of a Salt-damaged Horsechestnut Tree

On the Structural Changes in Wood and Bark of a Salt-damaged Horsechestnut Tree

The variability of vessel size in beech (Fagus sylvatica L.) and its ecophysiological interpretation

High-resolution analysis of radial growth and wood density in Eucalyptus nitens, grown under different irrigation regimes

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