Temperature-based zoning of the Bordeaux wine region
Benjamin Bois,
Daniel Joly,
Hervé Quénol,
Philippe Pieri,
Jean-Pierre Gaudillière,
Dominique Guyon,
Etienne Saur,
Cornelis van Leeuwen
Affiliations
Benjamin Bois
Biogéosciences UMR 6282 CNRS/Univ Bourgogne Franche Comté, 6 boulevard Gabriel, 21000 Dijon, France; Institut Universitaire de la Vigne et du Vin, 1 rue Claude Ladrey, 21000 Dijon, France
Daniel Joly
TheMA UMR 6049 CNRS / Univ Bourgogne France Comté), France
Hervé Quénol
Laboratoire COSTEL, LETG, UMR 6554 CNRS, Université Rennes 2, Place Recteur Henri le Moal, 35043 Rennes, France
Philippe Pieri
INRA, ISVV, UMR 1287, F-33140 Villenave d’Ornon, France
Jean-Pierre Gaudillière
INRA, ISVV, UMR 1287, F-33140 Villenave d’Ornon, France
Dominique Guyon
INRA, UR 1263 EPHYSE, F-33140 Villenave d’Ornon, France
Etienne Saur
IAVFF-Agreenium42, rue Scheffer 75116 Paris
Cornelis van Leeuwen
Bordeaux Sciences Agro, Institut des Sciences de la Vigne et du Vin (ISVV), Ecophysiology and Functional Genomics of the Vine (EGFV), UMR 1287, 33140 Villenave d’Ornon, France
Temperature is a driving climate variable for grapevine development and grape ripening kinetics. The current study first reports interpolation of daily minimum and maximum temperature data by a weather station network from 2001 to 2005 in the Bordeaux (France) region by means of regression kriging using terrain, satellite and land-cover derived covariates. Second it analyses the interpolation procedure errors in agroclimatic indices by means of cross validation and then it compares the field observations of grapevine phenology to temperature-based predicted phenology applied to interpolated data. Finally it proposes a simple method to perform a zoning of Bordeaux vineyards based upon the spatialized prediction of the day on which grape sugar content reaches 200 g.L-1. The zoning performed shows large potential differences in grape maturity date (up to 20 days) induced by temperature spatial variability in a low relief area.
