| Numéro |
La Houille Blanche
Numéro 3, Juin 2002
|
|
|---|---|---|
| Page(s) | 18 - 23 | |
| DOI | https://doi.org/10.1051/lhb/2002037 | |
| Publié en ligne | 1 juillet 2009 | |
La Houille Blanche, N°3 (Juin 2002), pp. 18-23
Fonctionnement hydrique et hydraulique des arbres forestiers
Water relations in forest trees
INRA, Institut National de la Recherche Agronomique, Centre de Nancy, UMR Ecologie et Ecophysiologie Forestières, 54280 Champenoux Tél: 03 83 39 40 38, Fax: 03 83 39 40 69
Auteur de correspondance : agranier@nancy.inra.fr
Abstract
After a brief recall of biophysical mechanisms governing transpiration and sap flow in trees, some typical examples of time-course of tree transpiration are presented. Major sources of variation in tree transpiration are shown : among trees within a forest stand, between tree species. Temporal variation is linked to tree phenology and to water shortage inducing xylem dysfunction (cavitation and embolism).
© Société Hydrotechnique de France, 2002