4.7 Article

Participatory modeling to assess the impacts of climate change in a Mediterranean vineyard watershed

Journal

ENVIRONMENTAL MODELLING & SOFTWARE
Volume 150, Issue -, Pages -

Publisher

ELSEVIER SCI LTD
DOI: 10.1016/j.envsoft.2022.105342

Keywords

Climate change; Grapevine; Landscape; Multi-scale evaluation; Spatially explicit model; Stakeholders

Funding

  1. LACCAVE 2.21 project - meta-program Adaptation of Agriculture and Forests to Climate Change (AAFCC) of the French National Research Institute for Agriculture, Food, and Environment (INRAE)
  2. Occitanie Regional Council
  3. INRAE AgroEcoSystem division

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The diversity of pedoclimatic and socio-economic contexts in agricultural landscapes poses challenges for assessing the impacts of climate change. This study used models and a participatory approach to simulate and discuss the potential impacts on water balance, grape phenology, and yield in a Mediterranean vineyard watershed. Results showed a projected decrease in grape production by 7-14% by 2100, with a higher decrease in irrigated high-yield areas despite an increased water supply. Furthermore, a forecasted 6 degrees C increase in temperature during berry ripening could threaten wine quality. The approach of involving stakeholders in model development and result discussions provides a promising means of identifying local adaptations to climate change.
The diversity of both pedoclimatic and socio-economic contexts in agricultural landscapes makes evaluating the impacts of climate change a challenge. Models are pertinent tools to quantitatively explore possible futures, and participatory approaches help account for local diversity. We developed a model through an approach that involves stakeholders in the model's construction and testing and in the discussion of results. We simulated spatially explicit impacts of climate change on water balance, grape phenology, and yield in a Mediterranean vineyard watershed for two climate scenarios. Results show a decrease in grape production of 7-14% by 2100. Yield decrease would be higher in irrigated high-yield areas despite a doubling of irrigation water supply. A forecasted 6 degrees C increase in temperature during berry ripening would threaten wine quality. The approach allows the communication of model results and limitations to stakeholders. It is a promising means of identifying potential local adaptations to climate change.

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