Major Land Resource Area 077C
Southern High Plains, Southern Part
Accessed: 04/19/2025
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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
- Site does NOT receive additional moisture from runoff
- Soil depth moderately deep to very deep (>20” (50cm)) without root restricting layer that inhibits the productivity potential
- Soils NOT affected by chemistry
- Loam and clay loam Surface, slopes 0 to 5 percent or less, moderately alkaline, Deep to Very Deep, nearly level to moderately sloping upland plateau.
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i
Key Characteristics
- Site that receives significant additional moisture from runoff of adjacent slopes or intermittent/perennial streams or a water table
- Soils without strong saline soil
- loamy soil texture (18-35% clay), along stream flood plains
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i
Key Characteristics
- Site does NOT receive additional moisture from runoff
- Soil depth moderately deep to very deep (>20” (50cm)) without root restricting layer that inhibits the productivity potential
- Soils affected by chemistry
- Soils highly calcareous (>15% CCE) violent effervescence. Soils are NOT skeletal (>35% by volume) in the subsoil, below 20”(50cm)
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i
Key Characteristics
- Site that receives significant additional moisture from runoff of adjacent slopes or intermittent/perennial streams or a water table
- Soils without strong saline soil
- clayey soil texture (>35% clay), in closed basin depressions
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i
Key Characteristics
- Site does NOT receive additional moisture from runoff
- Soil depth moderately deep to very deep (>20” (50cm)) without root restricting layer that inhibits the productivity potential
- Soils affected by chemistry
- Soils highly calcareous (>15% CCE) violent effervescence. Soils are skeletal (>35% by volume) in the subsoil, below 20”(50cm)
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i
Key Characteristics
- Site does NOT receive additional moisture from runoff
- Soil depth moderately deep to very deep (>20” (50cm)) without root restricting layer that inhibits the productivity potential
- Soils NOT affected by chemistry
- Fine Sand and Loamy Fine Sand Surface, slopes 0 to 5 percent or less, Duned ridges, little structure
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i
Key Characteristics
- Site does NOT receive additional moisture from runoff
- Soil depth moderately deep to very deep (>20” (50cm)) without root restricting layer that inhibits the productivity potential
- Soils NOT affected by chemistry
- Loamy Fine Sand and fine Sand Surface, slopes 5 percent or less, uplands and shallow swales
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i
Key Characteristics
- Site does NOT receive additional moisture from runoff
- Soil depth moderately deep to very deep (>20” (50cm)) without root restricting layer that inhibits the productivity potential
- Soils NOT affected by chemistry
- Fine Sandy Loam surface, slopes 5 percent or less, uplands and in shallow playas or depressions and swales
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i
Key Characteristics
- Site does NOT receive additional moisture from runoff
- Soils are very shallow to shallow (8-20"(20-50cm))
- Soils are very shallow (<10”(25cm) to root restricting layer
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i
Key Characteristics
- Site does NOT receive additional moisture from runoff
- Soil depth moderately deep to very deep (>20” (50cm)) without root restricting layer that inhibits the productivity potential
- Soils NOT affected by chemistry
- Fine Sand and Loamy Fine Sand Surface, slopes 2 percent or less, nearly level to gently undulating plains
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i
Key Characteristics
- Site does NOT receive additional moisture from runoff
- Soils are very shallow to shallow (8-20"(20-50cm))
- Soil depth shallow (10-20” (25-50cm)) with a sandy soil texture
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i
Key Characteristics
- Site that receives significant additional moisture from runoff of adjacent slopes or intermittent/perennial streams or a water table
- Site moderately to strongly saline (>8mmhos/cm) within 20” (50cm) and dominated by salt tolerant species
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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 77C ES Key
I.
Site that receives significant additional moisture from runoff of adjacent slopes or intermittent/perennial streams or a water table
A.
Site moderately to strongly saline (>8mmhos/cm) within 20” (50cm) and dominated by salt tolerant species
... R077CY689TX – Wet Saline 16-21" PZ
B.
Soils without strong saline soil
II.
Site does NOT receive additional moisture from runoff
A.
Soils are very shallow to shallow (8-20"(20-50cm))
1
Soils are very shallow (<10”(25cm) to root restricting layer
... R077CY037TX – Very Shallow 16-21" PZ
B.
Soil depth moderately deep to very deep (>20” (50cm)) without root restricting layer that inhibits the productivity potential
1
Soils affected by chemistry
i.
Soils highly calcareous (>15% CCE) violent effervescence. Soils are skeletal (>35% by volume) in the subsoil, below 20”(50cm)
... R077CY028TX – Limy Upland 16-21" PZ
ii.
Soils highly calcareous (>15% CCE) violent effervescence. Soils are NOT skeletal (>35% by volume) in the subsoil, below 20”(50cm)
... R077CY026TX – High Lime 16-21" PZ
2
Soils NOT affected by chemistry
i.
Loamy Fine Sand and fine Sand Surface, slopes 5 percent or less, uplands and shallow swales
... R077CY035TX – Sandy 16-21" PZ
ii.
Loam and clay loam Surface, slopes 0 to 5 percent or less, moderately alkaline, Deep to Very Deep, nearly level to moderately sloping upland plateau.
... R077CY022TX – Deep Hardland 16-21" PZ
iii.
Fine Sand and Loamy Fine Sand Surface, slopes 0 to 5 percent or less, Duned ridges, little structure
... R077CY034TX – Sand Hills 16-21" PZ
iv.
Fine Sand and Loamy Fine Sand Surface, slopes 2 percent or less, nearly level to gently undulating plains
... R077CY052NM – Loamy Sand
v.
Fine Sandy Loam surface, slopes 5 percent or less, uplands and in shallow playas or depressions and swales
... R077CY036TX – Sandy Loam 16-21" PZ
Ecological site photos
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Ecological sites
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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.
