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| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Kononenko, Denys |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Bih, L. |
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| Casati, R. |
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| Muller, Hermance |
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| Kočí, Jan | Prague |
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| Šuljagić, Marija |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Blanpain, Bart |
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| Ali, M. A. |
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| Popa, V. |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Steppe, Kathy
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Topics
Publications (8/8 displayed)
- 2023Mechanistic modeling reveals the importance of turgor-driven apoplastic water transport in wheat stem parenchyma during carbohydrate mobilizationcitations
- 2018X-ray computed microtomography characterizes the wound effect that causes sap flow underestimation by thermal dissipation sensorscitations
- 2014Changes in stem water content influence sap flux density measurements with thermal dissipation probescitations
- 2013Eliminating the heat input as parameter in the Sapflow+ method
- 2012Sapflow+: a four-needle heat-pulse sap flow sensor enabling nonempirical sap flux density and water content measurementscitations
- 2012Improving sap flux density measurements by correctly determining thermal diffusivity, differentiating between bound and unbound watercitations
- 2007Effects of ring-porous and diffuse-porous stem wood anatomy on the hydraulic parameters used in a water flow and storage modelcitations
- 2006A comprehensive model for simulating stem diameter fluctuations and radial stem growth
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article
Improving sap flux density measurements by correctly determining thermal diffusivity, differentiating between bound and unbound water
Abstract
Several heat-based sap flow methods, such as the heat field deformation method and the heat ratio method, include the thermal diffusivity D of the sapwood as a crucial parameter. Despite its importance, little attention has been paid to determine D in a plant physiological context. Therefore, D is mostly set as a constant, calculated during zero flow conditions or from a method of mixtures, taking into account wood density and moisture content. In this latter method, however, the meaning of the moisture content is misinterpreted, making it theoretically incorrect for D calculations in sapwood. A correction to this method, which includes the correct application of the moisture content, is proposed. This correction was tested for European and American beech and Eucalyptus caliginosa Blakely & McKie. Depending on the dry wood density and moisture content, the original approach over- or underestimates D and, hence, sap flux density by 10% and more.