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Master Thesis

Which crop model to simulate the ecosystem services provided by crop diversification in Brittany?

Abstract : Because current farming systems have many issues, particularly related to their negative impacts on the environment, it is necessary to operate a transition toward more sustainable agriculture and redesigning cropping systems. Crop diversification, which acts on planned biodiversity as well as associated biodiversity, is a solution for designing disruptive sustainable farming systems, able to provide several ecosystem services. Designing such farming systems including various levels of crop diversification via crop rotation and intercropping needs crop modelling because it allows assessing ecosystem services provided by a wide range of virtual systems, on different climate-soil contexts, on a long-term basis. Consequently, the objective of this study is to define detailed, by the conceptualisation of an “ideal” system, characteristics that a crop model should have to simulate crop diversification and its consequences on various ecosystem services relevant in Brittany region. For this, among 3 crop models (APSIM, DSSAT, STICS), we select the best crop model according to the detailed characteristics proposed in "ideal" system and we test its relevance in Brittany region. APSIM comes out as the crop model best suited to respond to our objective and to simulate and follows indicators related to the provision of ecosystem services. However, despite encouraging results, APSIM shows some limits to getting use to Britany pedoclimate context principally because a lack of adapted cultivars and complete information about initial conditions of soil. Thus, given this weakness, it is necessary to set up an adaptation step of the crop model and to complete this work with other simulations whose outputs will be compared with more observed data. In this way, it could be established whether APSIM is a good tool for designing systems based on crop diversification in the Brittany Region.
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Master Thesis
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https://dumas.ccsd.cnrs.fr/dumas-03038750
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Submitted on : Thursday, December 3, 2020 - 4:06:23 PM
Last modification on : Sunday, February 21, 2021 - 3:22:30 AM
Long-term archiving on: : Thursday, March 4, 2021 - 7:32:32 PM

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  • HAL Id : dumas-03038750, version 1

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Louis Bourdin. Which crop model to simulate the ecosystem services provided by crop diversification in Brittany?. Life Sciences [q-bio]. 2020. ⟨dumas-03038750⟩

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