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Communication Dans Un Congrès Année : 2007

Spatial analysis of within-vineyard grapevine sensitivity to solar irradiance patterns. A case study using Pinot noir in a complex terrain

Résumé

We analyze how the patterns of the solar irradiance affect the growth of Pinot noir grapevines at stand-scale over a hilly terrain bounded by a coniferous forest. Results show that the patterns of irradiance deficit are the primary driving force of the growth. Linear trends display good correlation between the total deficit of irradiance, and the developed growth index (R2 up to 0.96 ). This result also suggests the impact of low minimum temperature due to cold air drainage and stagnation. Results lead to propose a model able to capture at stand-scale 90% of the whole spatial variability of the growth. The model accounts for the diffuse component of the deficit of irradiance and the squared temperature anomalies. Combining such models through the use of GIS enables to better understand the driving mechanisms of grapevine growth over complex terrain, towards a better management of the “terroir” potential whithin climate change.
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Dates et versions

hal-01190287 , version 1 (01-09-2015)

Identifiants

  • HAL Id : hal-01190287 , version 1
  • PRODINRA : 189780

Citer

Thierry Castel, Jean-Noël Dodane, Jean-Marc Brayer, Pierre Curmi, Francis Andreux, et al.. Spatial analysis of within-vineyard grapevine sensitivity to solar irradiance patterns. A case study using Pinot noir in a complex terrain. Réchauffement climatique, quels impacts probables sur les vignobles ?, Mar 2007, Dijon, France. 9 p. ⟨hal-01190287⟩
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