Terroir 1996 banner
IVES 9 IVES Conference Series 9 Zonage et caractérisation des terroirs de l’AOC Côtes-du-Rhône: exemple du bassin de Nyons-Valreas

Zonage et caractérisation des terroirs de l’AOC Côtes-du-Rhône: exemple du bassin de Nyons-Valreas

Abstract

The southern Côtes-du-Rhône vineyard shows a significant variety of ecological facets over the Lower Rhone Valley. Intending to characterize such a variety of “terroir “called vineyard situations, a spatial approach based on identification of soil landscapes has been initiated. It was applied to a limited zone in part of the Valréas sedimentary basin, where local climate is likely homogeneous. Spatial distribution modelling of soil cover combine existing soil and geological data, using land survey, stereoscopic aerial photograph examination, satellite image processing. Map features are digitized within a Geographic Information System (GIS). 21 synthetic map units integrate 15 variables referring to soil, geomorphology, lithology, stratigraphy, vegetation, land form. The vine-growing terroirs, regarded as parts of agricultural lands consistent with both soil landscapes and harvestlwine response, are defined by clustering of the soil landscape units according to multivariate analysis. Terroir mapping is examined and validated in relation to wine response through Grenache harvest composition and its frequency over 1982-1996. Discriminant analysis is performed on the 1982-1996 must compositions of 14 sites related to 4 terroirs units. It shows that discrimination of the terroir units may be realized with the following variables: sugar content converted to expectable alcohol percentage (TAP, %), pH, titrable acidity (AT, g H2SO4/l.), weight of 200 berries (g/l), TAP/AT ratio.

Download the PDF

DOI:

Publication date: March 2, 2022

Issue: Terroir 1998

Type: Article

Authors

EMMANUELLE VAUDOUR (1, 2), M.C. GIRARD (1), L.M. BREMOND (2), L. LURTON (3)

(1) UER Dynamique des Milieux et Organisations Spatiales
Institut National Agronomique Paris-Grignon – 78850 Thiverval-Grignon (France)
(2) Syndicat Général des Vignerons Réunis des Côtes-du-Rhône
6, rue des Trois Faucons – 84000 Avignon (France)
(3) Comité Interprofessionnel des Vins d’AOC Côtes-du-Rhône et de la Vallée du Rhône Service technique, 2260, route du Grès, 84100 Orange (France)

Keywords

soil landscapes, vine-growing terroirs, harvest composition frequency, GIS

Tags

IVES Conference Series | Terroir 1998

Citation

Related articles…

Tannin potential and molecular toasting in cooperage: a tool to modulate fruity expression of red wine

AIM: Oak wood play traditionally a huge role in making fine red wines. During wine maturation, barrel yields some of its constituents to the wine and leads to the improvement of its quality, contributing to richness and complexity [1].

Read More

Struck flint aroma in Chardonnay wines: what causes it and how much is too much?

Struck flint/struck match/gun smoke/mineral aroma is considered desirable in some styles of wines, with this character sometimes evident in wines such as Burgundian Chablis and cooler climate barrel-fermented Australian Chardonnay.

Read More

Organic Oregon: an emerging experience in terroir tourism

Emerging from anthropology, climatology, ecology, gastronomy, geography and wine tourism, terroir tourism has been recently recognized to have potential for developing rural agriculture tourism

Read More

Comparison of aroma-related compounds of carbonic maceration and traditional young red winemaking in case of Merlot by means of targeted metabolomic approach

Winemaking decisions and techniques are known to affect the final aromatic composition of red wines. Winemakers put a constant effort into the improved controlling of vinification procedures to achieve better quality. Anyway an increased customer’s demand for uniqueness is often forcing them to adjust and offer new and new interesting products. To support the producers, an improved knowledge on aromatic potential as affected by classical and alternative strategies is needed.

Read More

Volatile composition of Cabernet Sauvignon wines from Argentina, Portugal and Spain

Cabernet Sauvignon is one of the most cultivated grape varieties worldwide being grown in different environmental conditions due to its excellent adaptability. Volatile compounds deeply contribute to the sensory properties of wines therefore to wine quality. The aim of this work was to compare the aroma profile of Cabernet Sauvignon wines from different geographical areas and climatic conditions, namely from Argentina, Portugal and Spain, from the vintage 2022. In addition, the volatile composition of the Cabernet Sauvignon Portuguese wines from three vintages was evaluated.

Read More