Guido, Viviana (2016) Impact of climate change on Vitis vinifera L. over Mediterranean area. Doctoral Thesis.
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Several agricultural sector are likely to be sensitive to climate change conditions. Vitis vinifera L. is particularly sensitive to climate change because of the linkage between climate variability, phenology and characteristics of the resulting product. This thesis discusses an investigation conducted at different scales in order to analyse the effects of climate change on Vitis vinifera L. in the Mediterranean basin.
At the European scale a methodology to study the vocationality area under climate change conditions was developed using three bioclimatic indicators (Huglin Index, Cool Night Index and Dryness Index) and soil characteristics (slope and depth). At the national scale (Italy), an evaluation of the impact on twelve different wine grapes varieties under climate change conditions (RCP 4.5 and RCP 8.5) has been undertaken. In order to study the annual growth cycle of grapes, six different phenological models, developed in the Phenological Modeling Platform 5.5, have been compared.
At the regional scale (Sardinia), how the impact of climate change might modify the yield rate has been described using a crop-model (STICS) on a new parametrised cultivar (Cannonau) and on Cabernet Franc variety, reason of interest for vitivinicultural Sardinian reality.
Generally, the results of the impact of climate change on grape cultivation showed a northern shift of the suitability area, a shortening of the growth cycle to the detriment of developmental stages, while yield remains more or less constant.
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