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| Titre : |
Base water potential of Picea abies as a characteristic of the soil water status
|
| Titre de série : | Plant and soil, Vol 184 - n°2 |
| Auteur(s) : | A. Sellin, Auteur (et co-auteur) |
| Type de document : | Tiré à part |
| Sujets : | Conditions météorologiques ; Déficit hydrique du sol ; Picea abies ; Humidité relative ; Température de l'air ; Potentiel hydrique ; Sol |
| Résumé : |
Variation in base water potential (base water potential (MPa) a daily maximum level of plant water potetial, which is presumed to correspond to the condition of equilibrium between the soil and plant water potentials) was examined in shoots of Norway spruce trees growing in well-drained and waterlogged soils. The influence of soil water content, air temperature, and vapour pressure deficit of the atmosphere on base water potential (MPa) was studied using the pressure chamber technique. Maximum daily water potentials were not always observable before dawn; some registered up to two hours later. This tendency being characteristic of trees growing undre stress (shade, waterlogging) conditions, increased with declining soil water availability. In trees growing in well-drained soil, base w[...]
Variation in base water potential (base water potential (MPa) a daily maximum level of plant water potetial, which is presumed to correspond to the condition of equilibrium between the soil and plant water potentials) was examined in shoots of Norway spruce trees growing in well-drained and waterlogged soils. The influence of soil water content, air temperature, and vapour pressure deficit of the atmosphere on base water potential (MPa) was studied using the pressure chamber technique. Maximum daily water potentials were not always observable before dawn; some registered up to two hours later. This tendency being characteristic of trees growing undre stress (shade, waterlogging) conditions, increased with declining soil water availability. In trees growing in well-drained soil, base water potential depended asymptotically on the available soil water storage (R2 = 0.73), while the values were slightly influenced by vapour pressure deficit of the atmosphere as
|
| Date de publication : | 1996 |
| Format : | pp. 273-280 / ill., graph., tabl., réf. |
| Langue(s) : | Anglais |
| Lien vers la notice : | https://infodoc.agroparistech.fr/index.php?lvl=notice_display&id=149605 |
Exemplaires (1)
| Localisation | Emplacement | Pôle | Section | Cote | Support | Disponibilité |
|---|---|---|---|---|---|---|
| Kourou | Archives | AgroParisTech-Kourou | TP6553 (E) | Papier Périodique | Empruntable Disponible |