Histosols

{
  "id": "MLC-T-ENV-013370",
  "term": "Histosols",
  "field": "Environment",
  "definition": "1. The central concept of Histosols is that of soils forming in organic soil materials. The general rule is that a soil without permafrost is classified as a Histosol if half or more of the upper 80 cm is organic. A soil is also classified as a Histosol if the organic materials rest on rock or fill or partially fill voids in fragmental, cindery, or pumiceous materials. If the bulk density is very low, less than 0.1, three-fourths or more of the upper 80 cm must be organic.\n\n2. Wet organic soils, such as peats and mucks.",
  "references": [
    "USDA Natural Resources Conservation Service Soil Taxonomy: A Basic System of Soil Classification for Making and Interpreting Soil Surveys (1999)",
    "NASA Sustainable Development Indicators Glossary"
  ],
  "url": "https://mlchart.com/terminology/environment/histosols/"
}