Risque, Assurance et Carbone : une application à l'agriculture
Direction de thèse
Marielle Brunette
Présentation de la thèse
The thesis focuses primarily on risks and risk management tools in the context of agroecological transition. The first chapter, on crop insurance, analyses the effect of nitrogen fertilisation on yield risks and, by deduction, on two types of yield-based crop insurance, namely multi-risk climate insurance and index-based crop insurance based on departmental yields. The two types of insurance considered are simulated for two types of crops, maize and grassland. The link between insurance and fertilisation is explained by the effect of nitrogen on production risk. This effect is highlighted by estimating a production function linking nitrogen to crop yields. In the second chapter, we focus on incentive programmes for carbon storage and reduction in agriculture. More specifically, the objective here is to use a discrete choice experiment (DCE) to assesshow risk prereferences, cost risks, and uncertainty associated with carbon farming outcomes affect farmers' participation to the programme. Furthermore, we examine the incentive payments required, the optimal contract duration, and the effect of the expected environmental performance of the practices on farmers' preferences. The third chapter assesses the effects of weather on agricultural production risks. We analyse the extent to which subsidised crop insurance is associated with exposure to extreme weather events. This assessment involves applying an econometric risk estimation model and is based on the use of farm data, specifically from the Farm Accountancy Data Network (FADN), as well as temperature and rainfall data from Copernicus, which are used to calculate the relevant weather indices.
Thèmes de recherche
Economie agricole
Economie de l'environnement et changement climatique