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From the 3D modeling of cotton plants water balance to the simulation of leaves temperature. Application to the monitoring of plant water status through thermographies

Luquet Delphine, Dauzat Jean, Bégué Agnès, Vidal Alain, Clouvel Pascal. 2000. From the 3D modeling of cotton plants water balance to the simulation of leaves temperature. Application to the monitoring of plant water status through thermographies. In : Taking the pulse of the planet, the role of remote sensing in managing the environment. Vol. 1 : IGARSS 2000 International Geoscience and Remote Sensing Symposium , Honolulu, Hawaï, 24-28 July 2000. IEEE. Piscataway : IEEE, pp. 366-368. IGARSS 2000, Honolulu, États-Unis, 24 July 2000/28 July 2000.

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Autre titre : De la modélisation en 3D du bilan hydrique de cotonniers à la simulation de la température des feuilles. Application au suivi de l'état hydrique de la plante à l'aide de thermographies

Abstract : The interpretation of thermal infrared (TIR) information as a crop water status indicator implies the understanding of plant water functioning in given environmental conditions. As water exchanges between plant and the atmosphere occur at leaf level through stomata, it appears interesting to work at this level to consider ecophysiological mechanisms involved in water transfer and thermal response. Also, in this study, we chose to use the 3D model of plant water balance of Dauzat [1] to interpret cotton plants temperature in terms of water status. This model is actually based on the description of plants at organ level in 3D mock-ups delivered by the AMAPmod Software [2]. Each leaf constitutive of a considered mock-up is the support of radiative and energy balance computations, directly dependant on its stomatal response to the environment, and leading to the simulation of transpiration and surface temperature. An experiment was organized between June and September 1999 in Montpellier, France, to test the model in this way. The model now appears as a useful tool to estimate, understand plant water status from TIR signal. (Résumé d'auteur)

Mots-clés Agrovoc : Gossypium hirsutum, Bilan hydrique, Modèle de simulation, Feuille, Température, Bilan énergétique, Stomate, Transpiration, Rayonnement infrarouge

Mots-clés géographiques Agrovoc : France

Classification Agris : U10 - Mathematical and statistical methods
F60 - Plant physiology and biochemistry

Auteurs et affiliations

  • Luquet Delphine, CIRAD-AMIS-AGRONOMIE (FRA) ORCID: 0000-0002-2543-7140
  • Dauzat Jean, CIRAD-AMIS-AMAP (FRA)
  • Bégué Agnès, CIRAD-AMIS-AGRONOMIE (FRA)
  • Vidal Alain, International Programme for Technology and Research in Irrigation and Drainage (ITA)
  • Clouvel Pascal, CIRAD-CA-COTON (FRA)

Autres liens de la publication

Source : Cirad - Agritrop (https://agritrop.cirad.fr/477759/)

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