Study area Bavaria in Germany.

(a) location (https://cran.r-project.org/web/packages/rworldxtra/index.html, accessed on 2018-01-09, derived from Natural Earth data), (b) large landscapes and soil quality rating (yield potential, full range going from 0 (low) to 100 (high)). Data by Bundesanstalt für Geowissenschaften und Rohstoffe (Federal Institute for Geosciences and Natural Resources) (data source: SQR1000 v1.0, BGR, Hannover, https://www.bgr.bund.de/DE/Themen/Boden/Ressourcenbewertung/Ertragspotential/Ertragspotential_node.html, accessed on 2017-12-16) and Bayerisches Landesamt für Umwelt (Bavarian Environment Agency) (www.lfu.bayern.de/natur/naturraeume, accessed on 2017-12-16) incorporating data by Geodaten—Bayerische Vermessungsverwaltung (Bavarian Surveying and Mapping Authority), and (c) land cover derived from Corine classification, basic year 2006. Data by the European Environment Agency (https://www.eea.europa.eu/data-and-maps/data/clc-2006-raster-4, accessed on 2017-12-16).