OENO IVAS 2019 banner
IVES 9 IVES Conference Series 9 Viticultural zoning of central chile based on bioclimatic indexes and the impact of climate warming

Viticultural zoning of central chile based on bioclimatic indexes and the impact of climate warming

Abstract

Climate is considered one of the main factors that determines the aptitude of a specific location for growing grapes and producing high quality wine, being in that sense one of the main elements defining the concept of terroir. Several bioclimatic indexes have been proposed that attempt to describe the climatic aptitude for high quality wine production. Based on this, a study was developed to characterize present and future viticultural potential of Chilean zones considering the dynamic of climate change.

 
Maps of central Chile were built based in different climatic parameters and the calculation of bioclimatic indexes like Winkler, Huglin, Mean January Temperature, Cold Nights index and Fregoni. Interactive maps obtained allow determining the aptitude of a locality by introducing the geographic coordinates.

 

In a second step, the future evolution of these climatic parameters was studied considering different models of climatic change (CSIRO-Mk3-6-0; GFDL-CM3 and HadCM3), different scenarios (moderate or severe) and different periods of time. Results obtained are also represented in interactive maps allowing seeing the evolution of a climatic parameter in time depending on the model and severity chosen.

 

Results obtained show a clear evolution of the aptitude of the main viticultural areas with with an increase in aptitude of regions in the south of Chile that presently have limitations for a good maturation, in particular of red varieties. More to the south and closer to the Pacific Ocean areas that are not suitable for wine production now become apt for wine production Northern areas are in general negatively affected by becoming too hot and having increasing problems with water supply.

DOI:

Publication date: June 3, 2020

Issue: OENO IVAS 2019

Type: Article

Authors

Edmundo Bordeu, David Mordales and Francisco Meza

Pontificia Universidad Católica de Chile
Vicuña Mackenna 4860 – Comuna de Macul – Santiago – Chile
Postal code: 7820426

Contact the author

Tags

IVES Conference Series | OENO IVAS 2019

Citation

Related articles…

Le terre dei Lambruschi modenesi

La superficie vitata della provincia di Modena é per circa il 70% interessata dai Lambruschi, famiglia di vitigni tipica dei territori pianeggianti emiliani. Tra questi, i più rappresentativi sono il Lambrusco di Sorbara, il Lambrusco salamino e il Lambrusco grasparossa che, unico esempio, predilige gli ambienti collinari della provincia. Nel quinquennio 2001-2005 la Provincia di Modena ed il C.R.P.V. hanno coordinato la zonazione viticola di tutto il territorio dei Lambruschi modenesi, i cui risultati hanno consentito di individuare, in ciascuna zona D.O.C., alcune Terre in cui cias.

Read More

Dry leaf hyperspectral reflectance predicts leaf elemental composition in grafted hybrids

Elemental composition, measured as the concentrations of different elements present in a given tissue at a given time point, is a key indicator of vine health and development. While elemental composition and other high-throughput phenotyping approaches yield tremendous insight into the growth, physiology, and health of vines, costs and labor associated with repeated measures over time can be cost-prohibitive. Recent advances in handheld sensors that measure hyperspectral reflectance patterns of leaf tissue may serve as an affordable proxy for other types of phenotypic data, including elemental composition. Here, we ask if reflectance patterns of dried Chambourcin leaf tissue from an experimental grafting vineyard can predict the known elemental composition of those leaves.

Read More

Multidisciplinary assessment of selective harvesting in the Colli Piacentini wine district

Within-field variability can be managed through Precision Viticulture (PV) protocols aiming at identifying homogeneous zones and addressing site-specific operations including selective harvesting (SH). Several authors demonstrated SH profitability in extensive viticulture while few information is available within the Italian context.

Read More

Enhancing the color traits of ‘Nebbiolo’ and ‘Dolcetto’ grapes: the role of abscisic acid during ripening

The red Italian variety Nebbiolo (Vitis vinifera L.), used in the production of the prestigious Barolo and Barbaresco wines, is renowned for its aromatic and structural complexity but also for its low color intensity.

Read More

Monitoring gas-phase CO2 in the headspace of champagne glasses through diode laser spectrometry

During Champagne or sparkling wine tasting, gas-phase CO2 and volatile organic compounds invade the headspace above glasses [1], thus progressively modifying the chemical space perceived by the consumer. Gas-phase CO2 in excess can even cause a very unpleasant tingling sensation perturbing both ortho- and retronasal olfactory perception [2]. Monitoring as accurately as possible the level of gas-phase CO2 above glasses is therefore a challenge of importance aimed at better understanding the close relationship between the release of CO2 and a collection of various tasting parameters.

Read More