Terroir 2006 banner
IVES 9 IVES Conference Series 9 Classification of the wine-growing environment of Central Mancha (Spain). First works

Classification of the wine-growing environment of Central Mancha (Spain). First works

Abstract

This paper describes a zoning study performed on a vast territory of around 86,500 hectares, situated in the countryside area of La Mancha Central (Castilla-La Mancha). The aim of the study was to classify the environment according to a small number of ecological criteria, establish the relevant territorial units and generate thematic maps with the different levels of criteria employed and synthetic maps by crossing these criteria. We studied the spatial distribution of one qualitative environmental factor, the nature of the substrate (lithostratigraphy), and other quantitative factors relating to the topography of the territory, slopes, exposures and theoretical insolation. The crossing of information between the two most integrating factors, lithostratigraphy and accumulated insolation – allowed us to classify the territory into homogeneous cartographic units according to the levels of criteria used. These units were prepared using automatic means (SIG) and then compared by interpreting aerial photographs at a scale of 1:20,000 and field work. The definitive cartographic units were drawn on printed maps from the vineyard register and then converted into digital format using the corresponding Arc-Info module.

DOI:

Publication date: December 22, 2021

Issue: Terroir 2006

Type: Article

Authors

Jesús MARTINEZ (1), Julio PLAZA (2), Raquel ROMERO (1) et Adela MENA (1)

1: Instituto de la vid y el vino de Castilla -La Mancha (IVICAM). Ctra. de Albacete, s/n 13700 Tomelloso (Ciudad Real), Espagne
2: Departamento de Geografía y Ordenación del Territorio. Facultad de Letras. Universidad de Castilla-La Mancha
(UCLM). Pº de Camilo José Cela, s/n, 13071 Ciudad Real, Espagne

Contact the author

Keywords

mapping, lithostratigraphy, La Mancha, zoning, theoretical insolation

Tags

IVES Conference Series | Terroir 2006

Citation

Related articles…

Definition of functional indicators of the vine to characterize wine terroirs

La caractérisation des terroirs viticoles est traditionnellement basée sur des descripteurs de la géologie et de la pédologie des différents milieux rencontrés, couplées à des données climatiques

New technologies to characterize spatial variability in viticulture

Measurements of parameters spatialy positionned, with on line sensors mounted on classical machinery or airborne imagery is no more a problem in viticulture. In a short time, high resolution data dedicated to the assessment of the vine characteristics, the soil, the harvest, etc. will become a reality.

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.

Diffuse light due to wildfire smoke enhances gas exchange of shaded leaves

The risk of wildfires is increasing as the frequency and severity of drought and heat waves continue to rise. Wildfires are associated with the combustion of plant materials and emit smoke. In the atmosphere, smoke may spread readily across large areas. Smoke is composed of solid and liquid phase particulates and gases and has been identified as a causal agent of “smoke taint” in wine. On a smoky day, the intensity of direct light decreases because these particulates scatter sunlight. Even though this effect is frequently assumed to decrease plant photosynthesis, this assumption ignores the potential changes in diffuse light and may be based on scant evidence.

Evaluation of climate change impacts at the Portuguese Dão terroir over the last decades: observed effects on bioclimatic indices and grapevine phenology

In the last decades the growers of the Portuguese Dão winegrowing region (center of Portugal) are experiencing changes in climate that are influencing either grape phenology berry health and ripening. Aiming to study the relationships between climate indices (CI), seasonal weather and grapevine phenology, in this work long-term climate and phenological data collected at the experimental vineyard of the Portuguese Dão research centre between 1958 and 2019 (61 years) for the red variety Touriga Nacional, was analyzed. The trends over time for the classical temperature-based indices (Growing Season Temperature – GST -, Growing Degree Days – GDD, Huglin Index – HI and Cool Night Index – CI) presented a significantly positive slope while the Dryness Index (DI) showed a negative trend over the last 61 years. Regarding grapevine phenology, an average advance of 4.5 days per decade in the harvest day was observed throughout the last 61 years. Consequently, the weather conditions during the ripening period have changed, showing an increasing trend over time in the average temperature (higher magnitude in the maximum than in the minimum temperature) and a decrease in the accumulated rainfall. A regression analysis showed that ~50% of harvest date variability over years was explained by the temperature-based indices variability. These observed effects of climate change on bioclimatic indices and corresponding anticipation of harvest date can still be considered advantageous for the Dão terroir as it allows to achieve an optimal berry ripening before the common equinox rains and, therefore, avoid the potential negative impacts of the rainfall on berry health and composition.