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IVES 9 IVES Conference Series 9 Assessment of climate change impacts on water needs and growing cycle on grapevine in three DOs of NE Spain

Assessment of climate change impacts on water needs and growing cycle on grapevine in three DOs of NE Spain

Abstract

This study assessed the suitability of grapevine growing in three DOs (Empordà, Pla de Bages and Penedès) of Catalonia (NE Spain) over the 21st century. For this purpose, an estimation of water needs and agroclimatic and phenological indicators was made. Climate change impacts were estimated at 1 km pixel resolution using temperature and precipitation projections from several general circulation models (GCM) and two climate change scenarios: RCP 4.5 (stabilization scenario) and RCP 8.5 (worst-case scenario). Potential crop evapotranspiration (following FAO procedure) and a daily water balance considering soil water holding capacity were used to estimate actual evapotranspiration of vines and, finally, water needs. Dynamics would be similar in the three DOs studied although the magnitude of impact differs. Water needs would be 2 and 3 times greater (ranging from 0 to more than 1500 m3/ha) than current water needs at both climate change scenarios. Moreover, blooming date would advance from 3 to 6 weeks, harvest date from 1 to 2.5 months, resulting in growing cycles from 10 to 80 days shorter. It should also be noted that frost risk would decrease from 6 to 76%, the number of days with temperatures above 30ºC during ripening would rise from 48 to 500% and tropical nights (minimum temperature >20ºC) at ripening would increase from 28 to 150%, depending on the scenario and the DOs. The impacts of climate change in the three DOs could result in significant limitations for grapevine cultivation and wine production if adaptive strategies are not applied. This result could serve as a basis for the design of specific and particular adaptation strategies to improve and maintain vineyards in the DOs studied and could be extrapolated to similar DOs and regions.

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DOI:

Publication date: May 31, 2022

Issue: Terclim 2022

Type: Article

Authors

Felicidad de Herralde1, Inmaculada Funes1, Elisenda Sanchez1, Marc Prohom2,
Vicent Altava-Ortiz2, Antoni Barrera-Escoda2, Xavier Aranda1 and Robert Savé1

1IRTA (Institute of Agrifood Research and Technology), Caldes de Montbui, Spain 
2Meteorological Service of Catalonia, Barcelona, Spain 

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Keywords

Vitis vinifera, climate projections, agroclimatic indexes, water balance

Tags

IVES Conference Series | Terclim 2022

Citation

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