Linking wood density with tree growth and environment : a theoretical analysis based on the motion of water

• An hydraulic model of a tree stem is presented to help understand how the carbon storage in ecosystems varies with changing environmental conditions. • The model is based on the assumption that a tree stem is a collection of parallel pipes and was used to (qualitatively) predict how the mass conce...

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Veröffentlicht in:The New phytologist. - 1984. - 149(2001), 3 vom: 25. März, Seite 473-485
1. Verfasser: Roderick, Michael L (VerfasserIn)
Weitere Verfasser: Berry, Sandra L
Format: Online-Aufsatz
Sprache:English
Veröffentlicht: 2001
Zugriff auf das übergeordnete Werk:The New phytologist
Schlagworte:Journal Article elevated CO2 nitrogen fertilization tree hydraulics viscosity water temperature wood density
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520 |a • An hydraulic model of a tree stem is presented to help understand how the carbon storage in ecosystems varies with changing environmental conditions. • The model is based on the assumption that a tree stem is a collection of parallel pipes and was used to (qualitatively) predict how the mass concentration of dry matter ([D]) would vary with water temperature (via changes in viscosity), nitrogen supply and atmospheric CO2 . • There was qualitative agreement between model predictions and observed gross trends. The model predicted that the flow rate would be relatively insensitive to variations in [D] in angiosperm stems; this was consistent with observations. It is concluded that other factors need to be considered to explain variations in [D] in angiosperm wood. The flow rate of water through gynmosperm stems was predicted to be very sensitive to variations in [D] and the model explained why [D]; decreases with decreases in water temperature, decreases with increases in nitrogen supply and increases with elevated CO2 . • The model captured some of the important underlying relations linking water transport with wood density and environment and qualitative testing of the model is recommended 
650 4 |a Journal Article 
650 4 |a elevated CO2 
650 4 |a nitrogen fertilization 
650 4 |a tree hydraulics 
650 4 |a viscosity 
650 4 |a water temperature 
650 4 |a wood density 
700 1 |a Berry, Sandra L  |e verfasserin  |4 aut 
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