Natural Resources
Conservation Service
Ecological site R034AY300CO
Loamy Breaks
Last updated: 9/07/2023
Accessed: 11/21/2024
General information
Provisional. A provisional ecological site description has undergone quality control and quality assurance review. It contains a working state and transition model and enough information to identify the ecological site.
MLRA notes
Major Land Resource Area (MLRA): 034A–Cool Central Desertic Basins and Plateaus
Major Land Resource Area (MLRA): 34A-Cool Central Desertic
Basins and Plateaus
For further information regarding MLRAs, refer to:
http://soils.usda.gov/survey/geography/mlra/index.html
LRU notes
Land Resource Unit (LRU) 34A-10:
• Moisture Regime: aridic ustic
• Temperature Regime: frigid
• Dominant Cover: rangeland
• Representative Value (RV) Effective Precipitation: 12-15 inches
• RV Frost-Free Days: 75-95 days
Classification relationships
Relationship to Other Established Classification Systems
Ecoregions (EPA):
Level I: 10 North American Deserts
Level II: 10.1 Cold Deserts
Level III: 10.1.4 Wyoming Basin
Ecological site concept
• This site does not receive any additional water.
• These soils:
o are not saline or saline-sodic
o are shallow
o are skeletal within 20” of the soil surface; and have minimal rock fragments at the soil surface
o are strongly or violently effervescent in the surface mineral layer (within top 10”)
o have surface textures that usually range from loam and stony loam in surface mineral layer (4”)
• have slopes less than 25 percent
• does not have a clay content that is greater than 35% in mineral soil surface layer (1-2”)
Associated sites
R034AY298CO |
Rolling Loam |
---|---|
R034AY293CO |
Sandhills |
Similar sites
R034AY420CO |
Cold Desert Breaks |
---|
Table 1. Dominant plant species
Tree |
Not specified |
---|---|
Shrub |
(1) Purshia tridentata |
Herbaceous |
(1) Pseudoroegneria spicata |
Click on box and path labels to scroll to the respective text.
T1A | - | Heavy Continuous Season-long Grazing |
---|---|---|
T1B | - | Continuous Season-long Grazing; Wildfire |
R2A | - | Prescribed Grazing |
R3A | - | Prescribed Grazing |