Major Land Resource Area 080A
Central Rolling Red Prairies
Accessed: 11/21/2024
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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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Viewing 18 of 18
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i
Key Characteristics
- Run on hydrology (floodplains, depressions)
- Floodplain or floodplain step
- Not ponded
- Natric or salts are present
- Sodic with prismatic structure in the subsurface horizons with red colors (7YR) and a SAR greater than 13.
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i
Key Characteristics
- Run off or neutral hydrology (uplands, terrace)
- Greater than 20 inches (50 cm) to a restrictive layer.
- No surface salts and crusting visible.
- Loam surface (loam, silty loam, clay loam, fine sandy loam)
- Abrupt texture change (increase in clay) within 30 inches of surface.
- Mean annual air temperature <60 degrees
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i
Key Characteristics
- Run off or neutral hydrology (uplands, terrace)
- Greater than 20 inches (50 cm) to a restrictive layer.
- No surface salts and crusting visible.
- Loam surface (loam, silty loam, clay loam, fine sandy loam)
- Abrupt texture change (increase in clay) within 30 inches of surface.
- Mean annual air temperature >60 degrees
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i
Key Characteristics
- Run off or neutral hydrology (uplands, terrace)
- Greater than 20 inches (50 cm) to a restrictive layer.
- No surface salts and crusting visible.
- Sandy surface (sand, fine sand, loamy fine sand).
- Low dunes or hummocks with argillic (Lamellae).
-
i
Key Characteristics
- Run off or neutral hydrology (uplands, terrace)
- Greater than 20 inches (50 cm) to a restrictive layer.
- No surface salts and crusting visible.
- Sandy surface (sand, fine sand, loamy fine sand).
- Dunes or hummocks with no argillic horizon (sand over sand) (clay <10%, sand >70%)
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i
Key Characteristics
- Run on hydrology (floodplains, depressions)
- Closed depressions or interdunal depressions on sand sheets
- Loam textures with redox within 30 inches
-
i
Key Characteristics
- Run on hydrology (floodplains, depressions)
- Floodplain or floodplain step
- Not ponded
- No salts present
- Loam or clay surface (greater than 4 inches (10 cm))
- >35% clay throughout the upper soil profile (20 inches (50 cm))
-
i
Key Characteristics
- Run on hydrology (floodplains, depressions)
- Floodplain or floodplain step
- Not ponded
- No salts present
- Loam or clay surface (greater than 4 inches (10 cm))
- >18% clay but <35% clay throughout the upper soil profile (20 inches (50 cm))
-
i
Key Characteristics
- Run off or neutral hydrology (uplands, terrace)
- Greater than 20 inches (50 cm) to a restrictive layer.
- No surface salts and crusting visible.
- Loam surface (loam, silty loam, clay loam, fine sandy loam)
- No abrupt texture change.
- Loam or clay loam subsoils
-
i
Key Characteristics
- Run on hydrology (floodplains, depressions)
- Floodplain or floodplain step
- Not ponded
- Natric or salts are present
- Saline with a Columnar structure in the subsurface horizons with a brown surface colors (10YR) and an EC greater than 4 mmohs/cm.
- Run on hydrology (floodplains, depressions)
- Floodplain or floodplain step
- Not ponded
- No salts present
- Sandy surface (greater than 4 inches (10 cm))
-
i
Key Characteristics
- Run off or neutral hydrology (uplands, terrace)
- Greater than 20 inches (50 cm) to a restrictive layer.
- No surface salts and crusting visible.
- Loam surface (loam, silty loam, clay loam, fine sandy loam)
- No abrupt texture change.
- Sandy loam or sandy clay loam subsoils
-
i
Key Characteristics
- Run off or neutral hydrology (uplands, terrace)
- Less than 20 inches (50 cm) to a restrictive layer
- Clay or Clay loam over red shale (>35% clay)
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i
Key Characteristics
- Run off or neutral hydrology (uplands, terrace)
- Less than 20 inches (50 cm) to a restrictive layer
- Loam or Sandy Loam over sandstone (clay >18% but <35%)
-
i
Key Characteristics
- Run on hydrology (floodplains, depressions)
- Floodplain or floodplain step
- Ponded with redox within 10 inches
-
i
Key Characteristics
- Run off or neutral hydrology (uplands, terrace)
- Greater than 20 inches (50 cm) to a restrictive layer.
- Surface salts and crusting visible.
-
i
Key Characteristics
- Run on hydrology (floodplains, depressions)
- Closed depressions or interdunal depressions on sand sheets
- Sand textures with redox within 50 inches
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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 80A Dichotomous Key
I.
Run on hydrology (floodplains, depressions)
A.
Closed depressions or interdunal depressions on sand sheets
B.
Floodplain or floodplain step
2
Not ponded
i.
Natric or salts are present
a.
Sodic with prismatic structure in the subsurface horizons with red colors (7YR) and a SAR greater than 13.
... R080AY001OK – Alkali Bottomland
b.
Saline with a Columnar structure in the subsurface horizons with a brown surface colors (10YR) and an EC greater than 4 mmohs/cm.
... R080AY068OK – Sandy Bottomland
ii.
No salts present
b.
Loam or clay surface (greater than 4 inches (10 cm))
1)
>35% clay throughout the upper soil profile (20 inches (50 cm))
... R080AY045OK – Clay Bottomland
2)
>18% clay but <35% clay throughout the upper soil profile (20 inches (50 cm))
... R080AY050OK – Loamy Bottomland
II.
Run off or neutral hydrology (uplands, terrace)
A.
Less than 20 inches (50 cm) to a restrictive layer
B.
Greater than 20 inches (50 cm) to a restrictive layer.
2
No surface salts and crusting visible.
i.
Loam surface (loam, silty loam, clay loam, fine sandy loam)
a.
Abrupt texture change (increase in clay) within 30 inches of surface.
b.
No abrupt texture change.
ii.
Sandy surface (sand, fine sand, loamy fine sand).
a.
Dunes or hummocks with no argillic horizon (sand over sand) (clay <10%, sand >70%)
... R080AY022OK – Dune
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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.
