2.2.6. Map Series of Soil Types and Soil Properties

The unified national soil type and soil property maps of Pásztor et al. (2020, 2018, 2017, 2015) [41–44] provided the soil information base for the assessment. A total of 41 soil types, belonging to 9 main soil type groups of the Hungarian Soil Classification System [45], are covered by the dataset. Soil chemical and physical data include pH, calcium carbonate content, organic matter content and texture. The map series are all produced at a 100 m resolution and can be viewed on the dosoremi.hu website. The 100 m resolution of the soil maps was considered to be sufficiently detailed for parcel-scale productivity evaluation, and therefore this spatial resolution defined the resolution of the assessment. There is a slight difference in the semantic component of the soil type maps and the soil type information in the AIIR dataset (Table 1). There are soil types in the national soil map with areas covering <1% of the country that are not available in the AIIR dataset, or which are available only with a very limited sample size. These were not sufficient for statistical tests. This minor inconsistency required an expert-based modification of the final evaluation system.
