Thünen Institute of Farm Economics, Thünen Institute of Farm Ecomonics, affiliation not provided to SSRN, affiliation not provided to SSRN, affiliation not provided to SSRN, affiliation not provided to SSRN, affiliation not provided to SSRN, affiliation not provided to SSRN, affiliation not provided to SSRN, affiliation not provided to SSRN, affiliation not provided to SSRN, National Observatory of Athens, National Observatory of Athens, Walloon Agricultural Research Centre, Walloon Agricultural Research Centre, Walloon Agricultural Research Centre, French National Institute of Geographic and Forestry Information, French National Institute of Geographic and Forestry Information, affiliation not provided to SSRN, French National Institute of Geographic and Forestry Information, affiliation not provided to SSRN, affiliation not provided to SSRN, affiliation not provided to SSRN, affiliation not provided to SSRN, affiliation not provided to SSRN, affiliation not provided to SSRN, affiliation not provided to SSRN, affiliation not provided to SSRN, Eurac Research, affiliation not provided to SSRN, affiliation not provided to SSRN, affiliation not provided to SSRN, affiliation not provided to SSRN, affiliation not provided to SSRN, affiliation not provided to SSRN, Humboldt-Universität zu Berlin and Johann Heinrich von Thünen Institute (vTI)