Diurnal changes in the radius of a subalpine Norway spruce stem: their relation to the sap flow and their use to estimate transpiration

Herzog, Karl Martin; Häsler, R.; Thum, Roland

doi:10.1007/bf00192189

Cited by 165 publications

(123 citation statements)

References 23 publications

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“…Growth involves the formation, diff erentiation and expansion of new cells, tissues or organs. The sudden increase in tree diameter o en observed a er rain is not necessary due to growth but refl ects the saturation of shrunk xylem and other stem tissues with water a er previous drier period (Herzog et al, 1995;Off enthaler et al, 2001). Moreover, e.g.…”

Section: Discussionmentioning

confidence: 98%

Biomass productivity and water use relation in short rotation poplar coppice (Populus nigra x P. maximowiczii) in the conditions of Czech Moravian Highlands

Fischer¹,

Trnka²,

Kučera³

et al. 2014

Acta Univ. Agric. Silvic. Mendelianae Brun.

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FISCHER, M., TRNKA, M., KUČERA, J., FAJMAN, M., ŽALUD Z.: Biomass productivity and water use relation in short rotation poplar coppice (Populus nigra x P. maximowiczii) in the conditions of Czech MoravianHighlands. Acta univ. agric. et silvic. Mendel. Brun., 2011, LIX, No. 6, pp. 141-152 The plantations of short rotation coppice (SRC) usually based on poplar or willow species are promising source of biomass for energy use. To contribute to decision-making process where to establish the plantations we evaluated the water consumption and its relation to biomass yields of poplar hybrid clone J-105 (Populus nigra x P. maximowiczii) in representative conditions for Czech-Moravian Highlands. Water availability is usually considered as one of the main constraints of profi table SRC culture and therefore we focused on analyzing of the linkage between the aboveground biomass increments and the total stand actual evapotranspiration (ET a ) and on water use effi ciency of production (WUE P ). During the seasons 2008 and 2009 the total stand ET a measured by Bowen ratio energy balance system constructed above poplar canopy and the stem diameter increments of randomly chosen sample trees were examined. The stem diameters were subsequently converted to total aboveground biomass (AB) by allometric equation obtained by destructive analysis at the beginning of 2010. The biomass volume and its increment of particular trees were subsequently converted to the whole canopy growth and correlated with the ET a values. Our results revealed that there was a statistically signifi cant relation between water lost and biomass growth with coeffi cients of determination r 2 0.96 and 0.51 in 2008 and 2009 respectively. By using multiple linear regression analysis additionally accounting for eff ect of precipitation events and thermal time (sums of eff ective temperatures above +5 °C) the AB growth was explained from 98 and 87% in 2008 and 2009, respectively. Therefore for further analysis the multiple linear regression model was applied. The dynamic of seasonal WUE P (expressed as gram of AB dry matter per thousand grams of water) reached up to 6.2 and 6.8 g kg −1 with means 3.13 and 3.54 g kg −1 in both executed years respectively. These values are situated in higher range comparing to the other broadleaved tree species of temperate climate zone and suggest that economically profi table plantation (defi ned by yield at least in the range of 10-12 Mg ha −1 year −1 of dry matter content) will consume more than 450-500 mm per growing season and thus will demand a locality with higher and adequately temporally distributed amount of precipitation especially in rain fed areas such as the discussed Czech-Moravian Highlands.short rotation coppice, biomass increment, water consumption, water use effi ciencyThe term short rotation coppice (SRC) is generally used for any high-yielding woody species managed in a coppice system usually grown especially for energy use on arable land. Typically, these crops are harvested on a 3-7 years long ro...

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Section: Discussionmentioning

confidence: 98%

Biomass productivity and water use relation in short rotation poplar coppice (Populus nigra x P. maximowiczii) in the conditions of Czech Moravian Highlands

Fischer¹,

Trnka²,

Kučera³

et al. 2014

Acta Univ. Agric. Silvic. Mendelianae Brun.

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“…Herzog et al [13] compared diurnal variation in stem diameter with sapflow and defined five phases of the diurnal curve in relation to water movement into and out of the cambial region. These phases were generally consistent with the patterns observed in this study and the three extracted phases are clear, mathematically definable portions of the diurnal cycle.…”

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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“…In the longer term, the xylem of most coniferous trees is known to play a role as a water reservoir [35] but it appears to play an insignificant role on a daily basis [17,37].…”

Section: Flux Measurementmentioning

confidence: 99%

Interpreting the variations in xylem sap flux density within the trunk of maritime pine (Pinus pinaster Ait.): application of a model for calculating water flows at tree and stand levels

Loustau¹,

Domec²,

Bosc³

1998

Ann. For. Sci.

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Diurnal changes in the radius of a subalpine Norway spruce stem: their relation to the sap flow and their use to estimate transpiration

Cited by 165 publications

References 23 publications

Biomass productivity and water use relation in short rotation poplar coppice (Populus nigra x P. maximowiczii) in the conditions of Czech Moravian Highlands

Biomass productivity and water use relation in short rotation poplar coppice (Populus nigra x P. maximowiczii) in the conditions of Czech Moravian Highlands

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

Interpreting the variations in xylem sap flux density within the trunk of maritime pine (Pinus pinaster Ait.): application of a model for calculating water flows at tree and stand levels

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