Natural Resources
Conservation Service
Major Land Resource Area 081B
Major Land Resource Area
Accessed: 04/21/2026
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1
Select an ecological site group
Select an ecological site group using the list, keys, photos, briefcase, or quick search option located on this page. -
2
Explore the ecological site group description
Next, learn more about the selected ecological site group and its characteristic dynamics by browsing the ecological site group description and exploring alternative state and transition model formats.
Ecological site group list
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Viewing 10 of 10
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i
Key Characteristics
- Sites concentrated around the east flanks of Crater lake
- Not as above
- Site occupying high elevation stratovolcano slopes
-
i
Key Characteristics
- Sites concentrated around the east flanks of Crater lake
- Not as above
- Site occupying high elevation stratovolcano slopes
-
i
Key Characteristics
- Sites concentrated around the east flanks of Crater lake
- Not as above
- Site occupying high elevation stratovolcano slopes
-
i
Key Characteristics
- Sites concentrated around the east flanks of Crater lake
- Not as above
- Site occupying high elevation stratovolcano slopes
-
i
Key Characteristics
- Sites concentrated around the east flanks of Crater lake
- Not as above
- Site occupying high elevation stratovolcano slopes
-
i
Key Characteristics
- Sites concentrated around the east flanks of Crater lake
- Not as above
- Site occupying high elevation stratovolcano slopes
-
i
Key Characteristics
- Sites concentrated around the east flanks of Crater lake
- Not as above
- Site occupying high elevation stratovolcano slopes
-
i
Key Characteristics
- Sites concentrated around the east flanks of Crater lake
- Not as above
- Site occupying high elevation stratovolcano slopes
-
i
Key Characteristics
- Sites concentrated around the east flanks of Crater lake
- Not as above
- Site occupying high elevation stratovolcano slopes
-
i
Key Characteristics
- Sites concentrated around the east flanks of Crater lake
- Not as above
- Site occupying high elevation stratovolcano slopes
Briefcase
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) icon wherever it occurs. Drag and drop items to reorder. Cookies are used to store briefcase items between browsing sessions. Because of this, the number of items that can be added to your briefcase is limited, and briefcase items added on one device and browser cannot be accessed from another device or browser. Users who do not wish to place cookies on their devices should not use the briefcase tool. Briefcase cookies serve no other purpose than described here and are deleted whenever browsing history is cleared.
Ecological site groups
Major Land Resource Areas
Ecological site group photos
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Interactive key
Additional water
081BESG01 – Bottoms
081BESG01 – Bottoms
Uplands
>75% bedrock outcrop
081BESG06 – Outcrops
081BESG06 – Outcrops
<75% bedrock outcrop
EC >1.5 surface or >2 subsurface
081BESG07 – Saline Uplands
081BESG07 – Saline Uplands
EC <1.5 surface and <2 subsurface
Depth <30cm
081BESG10 – Very Shallow
081BESG10 – Very Shallow
Depth: 30-55cm
081BESG09 – Shallow
081BESG09 – Shallow
Depth >55cm
Rock >30% surface or >30% subsurface
081BESG03 – Deep Rocky
081BESG03 – Deep Rocky
Rock <30% surface and <30% subsurface
Clay >30% surface or >35% subsurface
081BESG02 – Clay Uplands
081BESG02 – Clay Uplands
Clay <30% surface and <35% subsurface
Sand >75% or texture is loamy sand or sandier in surface & subsurface
081BESG08 – Sandy Uplands
081BESG08 – Sandy Uplands
Sand <75% or texture is sandy loam or finer in surface & subsurface
Clay <20% or texture is sandy loam or sandier in surface
081BESG05 – Loamy Uplands
081BESG05 – Loamy Uplands
Clay >20% or texture is finer than sandy loam in surface
081BESG04 – Finer Uplands
081BESG04 – Finer Uplands
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Ecological site group keys
MLRA 81B
II.
Uplands
B.
<75% bedrock outcrop
2
EC <1.5 surface and <2 subsurface
iii.
Depth >55cm
b.
Rock <30% surface and <30% subsurface
2)
Clay <30% surface and <35% subsurface
a)
Sand >75% or texture is loamy sand or sandier in surface & subsurface
... 081BESG08 – Sandy Uplands
b)
Sand <75% or texture is sandy loam or finer in surface & subsurface
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.
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