Terroir 1996 banner
IVES 9 IVES Conference Series 9 Impact of urbanization on optimum wine Terroirs in the Bordeaux region sample of one township of the Entre-Deux-Mers Area

Impact of urbanization on optimum wine Terroirs in the Bordeaux region sample of one township of the Entre-Deux-Mers Area

Abstract

[English version below]

L’étude présentée porte sur une commune de l’Entre-Deux-Mers dans le bordelais. Nous caractérisons dans un premier temps les potentialités des sols vis-à-vis de la production de vins rouges de qualité (délimitation de terroirs grâce à la prise en compte des couvertures pédologiques et des caractéristiques morphométriques du terrain : pentes, expositions, convexités. Dans un second temps, nous récapitulons l’évolution historique des occupations des sols depuis 1790 : l’emplacement des vignes est ainsi localisé sur les terroirs respectifs des communes. Enfin, une étude prospective résultant d’enquêtes sur l’utilisation du foncier, situe le devenir prévisible de l’espace étudié (en particulier dans ses composantes viticoles et urbaines).
Les résultats mettent en évidence l’influence de la pression d’urbanisation sur la consommation du patrimoine rare et non renouvelable que sont les terroirs viticoles. Les enjeux patrimoniaux collectifs (protection d’un terroir) se manifestent ici en opposition avec des enjeux patrimoniaux individuels : les prix du foncier à bâtir orientent les stratégies des propriétaires fonciers sur de tels terroirs. De plus, l’urbanisation contribue à la disparition d’unités de production lorsqu’elles se trouvent enclavées dans des parcellaires devenus urbains. Les méthodes utilisées dans le cadre de cette étude peuvent constituer la base d’outils d’aménagement pour permettre la préservation d’un patrimoine d’une grande importance économique comme paysagère, que sont les terroirs viticoles. Le patrimoine sol est une composante essentielle à prendre en compte dans un objectif de développement durable : il y a une dimension économique de la filière viti-vinicole, dimension sociale (emplois directs et dérivés : tourisme, culture), dimension environnementale (imperméabilisation des surfaces urbaines, destruction de sols, métamorphose des paysages).

This study was carried out on a township of the Entre-Deux-Mers area in the Bordeaux wine region. We initially focused on soil potentialities as regards high quality red wine production. Criteria such as soil type, slope, aspect (sunlight) and curvatures were taken into account to produce a map of best potential “terroirs”. Secondly, land cover changes were studied from 1790 to the present. Past and present vineyard delimitations were compared with the above mentioned map. At the same time, interviews carried out on wine producers allowed us to foresee changes in land use. The main goal was to assess the evolution of urbanization on optimum wine “terroirs”. Results show that there are losses of those “terroirs” due to urbanization. In this case, collective and individual interests are opposed because in Entre-Deux-Mers, the price of arable land is lower than that of land zoned for building. Some wine producers prefer to sell their land for building purposes. As a result, some vineyards are surrounded by urban areas and are likely to disappear in a short period of time (access for machines is more difficult and pesticide treatments are not easily accepted).  It is important to protect wine growing soils because they constitute a valuable and a nonrenewable resource. They are the basis of the Bordeaux region’s landscapes and many economic (i.e. tourism) and social activities depend directly on their protection.

DOI:

Publication date: February 15, 2022

Issue: Terroir 2002

Type: Article

Authors

P. CHERY (1), X. CHONE (2), A. ARMITAGE-LEE, L. COMMAGNAC (1), M-F. SlAK. (1)

(1) LARGE, ENITA de Bordeaux, BP 201, f-33175 GRADIGNAN cedex
(2) Laboratoire d’Ecophysiologie de la Vigne, ENITA de Bordeaux, BP 201, f33175 GRADIGNAN cedex

Keywords

Terroir viticole, AOC, urbanisation, Entre-Deux-Mers, analyse spatiale
Terroir, urbanization, Bordeaux wine region, spatial analysis

Tags

IVES Conference Series | Terroir 2002

Citation

Related articles…

Aroma chemical markers of Durello wines from different vintages and origins: a case study

Wines expressing sensory characters that are representative of their varietal and geographical origins are highly sought after in today’s market. It is therefore of considerable technological interest to investigate the aromatic aspects of specific wines and to identify the odorous substances involved. This study investigated aroma chemical and sensory diversity of Durello DOC white

DETERMINATION OF MINERAL COMPOSITION IN CV. TERAN (VITIS VINIFERA L.) RED WINE AFFECTED BY PRE-FERMENTATIVE MASH COOLING, HEATING, SAIGNÉE TECHNIQUE AND PROLONGED POST-FERMENTATIVE MACERATIONS

This study aimed to determine mineral composition in red wine obtained from cv. Teran (Vitis vinifera L.), autochtonous Croatian grape variety. Six different vinification treatments, including the control treatment (7-day standard maceration), were performed to study the effects of: 48-hour pre-fermentative mash cooling (8 °C) followed by prolonged post-fermentative maceration of 13 days (C15), 28 days (C30), and saignée technique (juice runoff) proceeded with prolonged post-fermentative maceration of 13 days (CS15); and effect of 48-hour heating (50 °C) followed by prolonged post-fermentative maceration of 13 days (H15) and 28 days (H30) on macro- and microelements in wine.

Methodology and zoning of A.O.C. natural soils. Example of “Pic Saint-Loup”

Les travaux menés, dans le cadre du programme départemental pour la connaissance et la valorisation des terroirs viticoles, sur l’aire A.O.C. Coteaux du Languedoc / Pic Saint-Loup ont permis d’appliquer à l’échelle d’une Appellation d’Origine Contrôlée (13 communes), une méthodologie d’étude axée sur les aspects sol/climat/topographie qui concourent à l’identification des terroirs naturels, facteurs de typicité des vins.

Comparing the chemical and sensory consequences of grapevine smoke exposure in grapes and wine from different cultivars and different wine regions in Australia

Aim: This study aimed to benchmark the chemical and sensory consequences of grapevine exposure to smoke, by comparing: (i) the concentration of volatile phenols and volatile phenol glycosides in control and smoke-affected grapes from different cultivars and different wine regions; and (ii) the chemical and sensory profiles of wines made from control and smoke-affected grapes, from different cultivars.  

Effect of riboflavin on the longevity of white and rosé wines

Light is a fundamental part at sales points which influences in the conservation of wines, particularly in those that are sold in transparent glass bottles such as rosé wines and increasingly white wines. The photochemical effect known as “light-struck taste” can cause changes in the aromatic characteristics of the wine. This “light-struck taste” is due to reactions triggered by the photochemical sensitivity of riboflavin (RBF).