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Soil Geography Hierarchy Diagrams

Land Resource Hierarchy

Land Resource Hierarchy reverse pyramid.

Land Resource Regions (LRR)
Major Land Resource Areas (MLRA)
Land Resource Units (LRU)
General Soil Map
Detailed Soil Map
Soil Series
Soil Pedon

Click on the graphic for more details.

Agroecological Hierachy

Agroecological Hierarchy reverse pyramid.

Common Ecological Regions (CER)
Major Land Resource Areas (MLRA)
Common Resource Areas (CRA)
General Soil Map
Detailed Soil Map
Soil Series
Soil Pedon

Click on the graphic for more details.