A map illustrates major soil orders worldwide including ultisols, aridisols, histosols, entisols, rocky land, alfisols, shifting sand, spodosols, gelisols, inceptisols, oxisols, andisols, vertisols, mollisols, and ice/glacier.
Areas shaded in various colors represent major soil orders globally.
Ultisols (yellow) are found in the eastern United States, parts of Africa, Southeast Asia, and northern Australia.
Aridisols (green) dominate desert regions such as the southwestern United States, northern Africa (Sahara), and parts of Central Asia. Other regions include southern parts of South America and parts of Australia.
Histosols (light green) are found in parts of Canada, northern Europe, and Russia.
Entisols (light green) are scattered globally in areas like western North America, parts of South America, Africa, and Asia.
Rocky Land (very light gray) is found in mountainous regions like the Rockies in North America, the Andes in South America, and part of central Asia.
Alfisols (light gray) are found in parts of the United States, Europe, Africa, India, and Australia.
Shifting Sand (gray) appears in desert regions such as the Sahara and central Australia. Other regions include parts of Saudi Arabia, China, and Uzbekistan.
Spodosols (blue gray) cover most of Canada and parts of Europe such as Sweden.
Gelisols (light blue) dominate northern regions of Canada and Russia. Other regions include parts of China.
Inceptisols (blue) appear in regions such as Alaska, parts of Canada, Europe, and scattered across Russia, South Africa, and Asia.
Oxisols (dark gray) are prevalent in tropical regions like the Amazon Basin in South America and parts of Southeast Asia. Other regions include parts of Africa.
Andisols (blue) are found in volcanic regions like parts of the Pacific Northwest in the United States, parts of Mexico and Chile.
Vertisols (light green) are found in regions such as India, parts of Africa, and eastern Australia. Other regions include eastern parts of Mexico and parts of Uruguay.
Mollisols (maroon) cover the central plains of the United States, parts of South America, and Eastern Europe.
Ice slash Glacier (blue) covers Greenland and parts of Arctic.
Ultisols | Aridisols | Histosols | Entisols | Rocky Land | Alfisols | Spodosols | Gelisols | Inceptisols | Andisols | Vertisols | Mollisols | Ice/Glacier | Class | Rank | Percent | 4.50–4.59 pH | 4.60–4.69 pH | 4.70–4.79 pH | 4.80–4.89 pH | 4.90–4.99 pH | 5.00–5.09 pH | 5.10–5.19 pH | 5.20–5.29 pH | ≥5.30 pH | Coastal Plain | Prairie | South Central | Central | Southwest | East Central | North Central | Upper Plains | Coastal | South Central | East Central | Gulf | Upper Delta | Southeast | Northeast | Southwest | East Central | South Central | Southeast | Southwest | Central | Northwest | Central | Northern Valley | South Central | West Central | East Central | North Central | Southeast | Southeast | Piedmont Plateau | Lower Delta | Southwest | Eastern | Northwest | Northeast | Appalachian Mountain | Eastern | Eastern Valley | East Texas | Northwest | West Central | Bootheel | Middle | Northeast | Cumberland Plateau | Northeast | Arkansas Drainage | Western | South Central | Western | Western | Southern Mountains | Southwestern | Edwards Plateau | West Olympic Coast | Puget Sound Lowlands | Central | North Central | Southeast | North Central | Southern | North | East Ozarks | Southeast | Panhandle | Central | West Ozarks | Northwest | West | Southern Coastal Plain | Willamette Valley | Allegheny Plateau | Southeast | Southwestern Mountain | North Central | North Central | East Southeast | Central | Northeastern | Northwestern | East Olympic Cascade Foothills | Lower Valley | Mountain | Southeast | Southwest | West Central | Central | Southwestern Valleys | North Central | Central | Central | West Central | East Central | Northeast | Southwest Plateau | Upper Snake River Plains | West Central | Dixie | Southwest | West Central | North Central | West Central | East Central | South Central | Southwest | Platte Drainage | Blue Grass | South Central | Northwestern | Eastern Highlands | Low Rolling Plains | Northern Cascades | North Central | Northeast | Southwest | West Southwest | East Central | South Central | North Central | Coastal Area | North Coast Drainage | North Central | Southeast | High Plains | Central Mountain | Northern Coastal Plain | Rio Grande Drainage | Southwest | Central Mountains | West Central Plains | South Central | Sacramento Drainage | Northwest Prairie | Southeast | Northeast Prairie | South Central | Southwestern Highlands | Northwest | Snake Drainage | East | Northern Mountains | Southeast | Southern | South Central | Southwestern Valleys | Northwestern Plateau | Northeast | Upper Coast | Southern Desert | East Central | Tidewater | South Central Mountains | North Central Canyons | Central Coastal Plain | Northwest | Northern Mountains | South | South Central | Northeast Interior Basins | Western Piedmont | Panhandle | Northeastern Plains | Central Piedmont | San Joaquin Drainage | Southern Piedmont | Northwest | Southwestern Mountains | North Central Prairies | Central | Green and Bear Drainage | Central Hills | North Central | Eastern Piedmont | Northwest | Trans Pecos | Northeast | Southeast | West Central | Southwest | North Central | Southwest | Central | West Central | Central | South Central | Extreme Southern | Northeast | Cheyenne Niobrara Drainage | Okanogan Big Bend | Southeast Desert Basins | Northern Piedmont | Central Coast Drainage | Southwest | Northern Mountains | Central Plains | Everglades and Southwest Coast | Southeast | Lower Platte | Northwest | High Plateau | Southeastern Plains | Northeast | Upper Platte | Northeast Hills | Northeastern | Northwest | Central Highlands | Central Valley | Cascade Mountains West | Kansas Drainage | South Central | Northeast | Wind River | Northeastern Valleys | Black Hills | North Central | Northwest Plateau | Southwestern | Central Basin | East Central | Northwest | Western Plateau | Lower Southern | Central Mountains | Northeast | South Central | Northeastern | Colorado Drainage | North Central | Upper Southern | Lower East Coast | Middle Susquehanna | Aleutians | Appalachian Mountains | Northeast | Palouse Blue Mountains | Southeastern Shore | North Central | Central | East Slope Cascades | Northeast | Yellowstone Drainage | Southwest Lower | Northeastern Shore | East Central | Southeast | Upper Susquehanna | Lower Susquehanna | Big Horn | South Panhandle | Central Eastern Shore | Belle Fourche Drainage | Panhandle | Powder, Little Mo and Tongue Drainages | North Central | South Central | Northern | North Central | South Central | Uinta Basin | Southwest | Central Lakes | South Coast Drainage | South Central Lower | East Upper | South Central | Eastern Plateau | Southeast Lower | Southeast | Southwest | Great Lakes | Southeast | Western | Southern | Northeast Gulf | Southeastern | Southwest | Central | Mohawk Valley | Northwest | West Central Lower | East Central | West | Southeast | Southeastern Piedmont | East Central Lower | Northern | Northwest | East Central Mountains | Pocono Mountains | Coastal | Coastal | Central | Central | South Central | Coastal | North Central | Central Lower | South | Rhode Island (Entire State) | West Upper | Northeast | Central | Southern | East Central | Coastal | Coastal | Northeastern | Hudson Valley | North Central | Southeastern | Northeast Lower | Southwest | West Central | Northern | Northeast | Champlain Valley | Northern Plateau | Northwest Lower | Central | South Interior | North | Northwest Gulf | North | Northeastern | Western | West Central | Northwest | East Central | North Central | Northeast | Southeast | Central | Northwest | Central | South Central | West Central | Northeast | North Central | Cook Inlet | Southeast Interior | St | East Central | Northwest | North Central | Bristol Bay | West Coast | Northeast Interior | Central Interior | North Slope | |
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29.2% | 9.16% | 4.00% | 5.44% | 0.754% | 6.87% | 5.89% | 3.80% | 7.01% | 1.28% | 2.72% | 23.6% | 5.25% | 4.29% | 14.4% | 23.8% | 24.2% | 18.5% | 16.1% | 11.6% | 6.63% | 81.6% |