Major Land Resource Area 118B
Arkansas Valley and Ridges, Western Part
Accessed: 12/21/2024
Next steps
-
1
Select an ecological site
Select an ecological site using the list, keys, photos, briefcase, or quick search option located on this page. -
2
Explore the ecological site description
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.
Ecological site list
-
i
Key Characteristics
- Site does not receive additional moisture from the surrounding landscape.
- Site occurs on summits, shoulders, and side slopes of interfluves, hills and mountains. Soils derived from colluvium and residuum.
- Less than 50cm to hard bedrock (soil are very shallow or shallow).
-
i
Key Characteristics
- Site does not receive additional moisture from the surrounding landscape.
- Greater than 50cm to root restrictive layer (soils are moderately deep, deep, or very deep).
- Soil characterized by 35 to 60 percent clay by weight in the particle size control section (fine or clayey).
-
i
Key Characteristics
- Site does not receive additional moisture from the surrounding landscape.
- Greater than 50cm to root restrictive layer (soils are moderately deep, deep, or very deep).
- Soil characterized by 18 to 35 percent clay by weight in the particle size control section (fine-loamy or loamy).
-
i
Key Characteristics
- Site receives additional moisture from the surrounding landscape, soils formed in alluvium.
- Occurs on high terraces and paleoterraces that are rarely to occasionally flooded.
-
i
Key Characteristics
- Site receives additional moisture from the surrounding landscape, soils formed in alluvium.
- Occurs on flood plain, soil characterized by seasonal water table, subject to rare to occasional flooding.
- Soil characterized by greater than 18 percent clay by weight in the particle size control section.
-
i
Key Characteristics
- Site does not receive additional moisture from the surrounding landscape.
- Site occurs on gently to moderately sloping hills and high terraces and soils are sandy in the particle size control section or loamy fine sand or fine sand in the upper 50-100cm.
-
i
Key Characteristics
- Site receives additional moisture from the surrounding landscape, soils formed in alluvium.
- Occurs on flood plain, soil characterized by seasonal water table, subject to rare to occasional flooding.
- Soils are fluventic (do not have restrictive soil horizon within 25cm, and are characterized by an irregular decrease in organic-carbon).
Ecological site map
Basemap
Find me
Find point
Full screen
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
Ecological site photos
Print Options
Sections
Font
Other
Briefcase
Add ecological sites and Major Land Resource Areas to your briefcase by clicking on the briefcase (
) 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 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.
