Major Land Resource Area 150A
Gulf Coast Prairies
Accessed: 12/21/2024
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Next, learn more about the selected ecological site and its characteristic dynamics by browsing the ecological site description and exploring alternative state and transition model formats.
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i
Key Characteristics
- Soils on uplands or terraces
- Terraces and terrace ridges with greater than 58 inches of average annual rainfall (east of Sabine River)
- Terraces or ridges with loamy-textured soils
- Soils on terraces
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i
Key Characteristics
- Soils on uplands or terraces
- Terraces and terrace ridges with greater than 58 inches of average annual rainfall (east of Sabine River)
- Terraces with fine-textured soils
-
i
Key Characteristics
- Soils on uplands or terraces
- Terraces and terrace ridges with greater than 58 inches of average annual rainfall (east of Sabine River)
- Terraces or ridges with loamy-textured soils
- Soils on terrace ridges
-
i
Key Characteristics
- Soils on uplands or terraces
- Uplands and terraces with less than 58 inches of average annual rainfall (west of Sabine River)
- Soils without a natric horizon
- All others
- Finer-textured surface soils (sandy clay loam, clay loam, and clay)
- Vertisols or soils with vertic properites
- Soils with less than 44 inches of average annual rainfall (south of Jackson County)
-
i
Key Characteristics
- Soils on floodplains or bottomlands
- Bottomlands with fine or loamy-textured soils
- Fine-textured soils
-
i
Key Characteristics
- Soils on uplands or terraces
- Uplands and terraces with less than 58 inches of average annual rainfall (west of Sabine River)
- Soils without a natric horizon
- All others
- Coarser-textured surface soils (sandy, loamy fine sand, fine sandy loam, and loam)
- Soils with a well developed argillic horizon and clay subsoils
-
i
Key Characteristics
- Soils on uplands or terraces
- Uplands and terraces with less than 58 inches of average annual rainfall (west of Sabine River)
- Soils without a natric horizon
- All others
- Coarser-textured surface soils (sandy, loamy fine sand, fine sandy loam, and loam)
- All others
- Soils with coarse textures deeper than 40 inches before an increase in clay percent
-
i
Key Characteristics
- Soils on floodplains or bottomlands
- Bottomlands with fine or loamy-textured soils
- Loamy-textured soils
-
i
Key Characteristics
- Soils on uplands or terraces
- Uplands and terraces with less than 58 inches of average annual rainfall (west of Sabine River)
- Soils without a natric horizon
- All others
- Coarser-textured surface soils (sandy, loamy fine sand, fine sandy loam, and loam)
- All others
- All others
- All others
- Fine sandy loam or loamy-surfaced soils over loamy subsoils
- Less than 44 inches of average annual rainfall (south of Jackson County)
-
i
Key Characteristics
- Soils on uplands or terraces
- Uplands and terraces with less than 58 inches of average annual rainfall (west of Sabine River)
- Soils without a natric horizon
- Upland depressions or low flats receiving excess water
- Alfisols that occupy low flats with flooding and ponding
-
i
Key Characteristics
- Soils on uplands or terraces
- Uplands and terraces with less than 58 inches of average annual rainfall (west of Sabine River)
- Soils with a natric horizon
-
i
Key Characteristics
- Soils on floodplains or bottomlands
- Bottomlands with coarse-textured soils
-
i
Key Characteristics
- Soils on uplands or terraces
- Uplands and terraces with less than 58 inches of average annual rainfall (west of Sabine River)
- Soils without a natric horizon
- All others
- Coarser-textured surface soils (sandy, loamy fine sand, fine sandy loam, and loam)
- All others
- All others
- All others
- Alfisols with loamy fine sand or fine sandy loam surfaces
-
i
Key Characteristics
- Soils on uplands or terraces
- Uplands and terraces with less than 58 inches of average annual rainfall (west of Sabine River)
- Soils without a natric horizon
- All others
- Coarser-textured surface soils (sandy, loamy fine sand, fine sandy loam, and loam)
- All others
- All others
- Soils with coarse textures deeper than 20 inches, but less than 40 inches before an increase in clay percent
-
i
Key Characteristics
- Soils on uplands or terraces
- Uplands and terraces with less than 58 inches of average annual rainfall (west of Sabine River)
- Soils without a natric horizon
- All others
- Finer-textured surface soils (sandy clay loam, clay loam, and clay)
- Mollisols with clay loam subsoils
-
i
Key Characteristics
- Soils on uplands or terraces
- Uplands and terraces with less than 58 inches of average annual rainfall (west of Sabine River)
- Soils without a natric horizon
- Upland depressions or low flats receiving excess water
- Vertic, closed depressions that are occasionally ponded
-
i
Key Characteristics
- Soils on uplands or terraces
- Uplands and terraces with less than 58 inches of average annual rainfall (west of Sabine River)
- Soils without a natric horizon
- All others
- Finer-textured surface soils (sandy clay loam, clay loam, and clay)
- Vertisols or soils with vertic properites
- Soils with greater than 44 inches of rainfall (north of Jackson County)
-
i
Key Characteristics
- Soils on uplands or terraces
- Uplands and terraces with less than 58 inches of average annual rainfall (west of Sabine River)
- Soils without a natric horizon
- All others
- Coarser-textured surface soils (sandy, loamy fine sand, fine sandy loam, and loam)
- All others
- All others
- All others
- Fine sandy loam or loamy-surfaced soils over loamy subsoils
- Greater than 44 inches of rainfall (north of Jackson County)
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Zoom in to display soil survey map units for an area of interest, and zoom out to display MLRAs. Select a map unit polygon to view ecological sites correlated to that map unit. View a brief description of an ecological site by clicking on its name in the map popup. Soil survey correlations may not be accurate, and ecological site classification of a location should always be verified in the field. Each selection may require the transfer of several hundred KB of data.
Ecological site keys
MLRA 150A
I.
Soils on floodplains or bottomlands
B.
Bottomlands with fine or loamy-textured soils
II.
Soils on uplands or terraces
A.
Terraces and terrace ridges with greater than 58 inches of average annual rainfall (east of Sabine River)
2.
Terraces or ridges with loamy-textured soils
B.
Uplands and terraces with less than 58 inches of average annual rainfall (west of Sabine River)
2.
Soils without a natric horizon
i.
Upland depressions or low flats receiving excess water
ii.
All others
a.
Finer-textured surface soils (sandy clay loam, clay loam, and clay)
2)
Vertisols or soils with vertic properites
a)
Soils with greater than 44 inches of rainfall (north of Jackson County)
... R150AY740TX – Northern Blackland
b)
Soils with less than 44 inches of average annual rainfall (south of Jackson County)
... R150AY526TX – Southern Blackland
b.
Coarser-textured surface soils (sandy, loamy fine sand, fine sandy loam, and loam)
2)
All others
a)
Soils with coarse textures deeper than 40 inches before an increase in clay percent
... R150AY532TX – Deep Sand
b)
All others
i)
Soils with coarse textures deeper than 20 inches, but less than 40 inches before an increase in clay percent
... R150AY543TX – Sandy Prairie
ii)
All others
2)
Fine sandy loam or loamy-surfaced soils over loamy subsoils
a)
Greater than 44 inches of rainfall (north of Jackson County)
... R150AY741TX – Northern Loamy Prairie
b)
Less than 44 inches of average annual rainfall (south of Jackson County)
... R150AY535TX – Southern Loamy Prairie
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Ecological sites
Major Land Resource Areas
The Ecosystem Dynamics Interpretive Tool is an information system framework developed by the USDA-ARS Jornada Experimental Range, USDA Natural Resources Conservation Service, and New Mexico State University.
