
thumb|upright=1.6|Histosols of the world
via Wikipedia infobox
thumb|upright=1.6|Histosols of the world
In both the World Reference Base for Soil Resources (WRB) and the USDA soil taxonomy, a Histosol is a soil consisting primarily of organic materials. They are defined as having or more of organic soil material starting within 40 cm from the soil surface. In Soil Taxonomy, Gelisols key out before Histosols, and in WRB, Histosols key out before Cryosols. Therefore, organic permafrost soils belong to the Histosols in WRB (Cryic Histosols) and to the Gelisols (Histels) in Soil Taxonomy.
Discovered by embedding cosine similarity (sentence-transformers MiniLM, 384-dim).