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Natural Resources
Conservation Service
Ecological site R024XY001OR
SODIC FLAT
Accessed: 08/17/2024
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.
![Location map](/images/maps/R024XY001OR.png)
Figure 1. Mapped extent
Areas shown in blue indicate the maximum mapped extent of this ecological site. Other ecological sites likely occur within the highlighted areas. It is also possible for this ecological site to occur outside of highlighted areas if detailed soil survey has not been completed or recently updated.
Ecological site concept
This ecological site occurs on alluvial flats. Soils are deep, poorly to somewhat poorly drained, and formed in alluvium derived from mixed rocks with a component of volcanic ash. The soil profile is characterized by an ochric epipdeon, a pH greater than 8.0 throughout, sodicity (SAR) greater than 30 and a water table between 90 to 150cm at some point during the spring. Soil textures are fine sandy loam or silt clay loam.
Important abiotic factors include crusting & baking of the surface layer upon drying, inhibiting water infiltration and seedling emergence. High salt concentrations reduce seed viability, germination and the available water capacity of these soils. Full consideration should be given to combining this ecological site concept with Sodic Flat 6-8" PZ (024XY011NV), Sodic Flat 8-10" (024XYXY008NVC) and Dry Sodic Flood Plane (024XY112OR). These site do not compete on soil characteristics, abiotic factors or species composition.
Associated sites
R024XY002OR |
SODIC MEADOW 6-10 PZ Sodic Meadow (higher sodic conditions, thin surface layer, longer seasonal surface moisture - located in ephemeral seepage areas along dry alkali lakebeds, higher production, different composition –SPAI & DISP dominant, SAVE4 & LECI4 minor) |
---|---|
R024XY003OR |
SODIC BOTTOM Sodic Bottom (thicker surface, longer seasonal subsurface moisture, greater production, different composition - SAVE4 & LECI4 dominant, DISP common) |
R024XY005OR |
SODIC DUNES Sodic Dunes (very deep sandy soils, steeper short slopes, lower sodic conditions, higher production, different composition – ARTRT & SAVE4 dominant shrubs, LECI4 & ACHY common) |
R024XY013OR |
LOW SODIC TERRACE 6-10 PZ Low Sodic Terrace 6-10 PZ (deeper loamy sodic surface, higher position, different composition – SAVE4 dominant, ATCO, GRSP, PIDE4 & ELEL5 prominent, DISP & LECI4 minor) |
R024XY114OR |
SODIC LAKE TERRACE Sodic Lake Terrace (thicker loamy sodic surface, low terrace position, additional available subsurface moisture, higher production, different composition-SAVE4/DISP-PUCCI association, LECI4 minor) |
Similar sites
R024XY002OR |
SODIC MEADOW 6-10 PZ Sodic Meadow (higher sodic conditions, thin surface layer, longer seasonal surface moisture - located in ephemeral seepage areas along dry alkali lakebeds, higher production, different composition –SPAI & DISP dominant, SAVE4 & LECI4 minor) |
---|---|
R024XY005OR |
SODIC DUNES Sodic Dunes (very deep sandy soils, steeper short slopes, lower sodic conditions, higher production, different composition – ARTRT & SAVE4 dominant shrubs, LECI4 & ACHY common) |
R024XY112OR |
DRY SODIC FLOODPLAIN Dry Sodic Floodplain (floodplain position, gravelly loamy surface over stratified heavier subsoil, lower sodic conditions, different composition – SAVE4 dominant, LECI4 and DISP prominent, ARTRT present) |
R024XY114OR |
SODIC LAKE TERRACE Sodic Lake Terrace (thicker loamy sodic surface, low terrace position, additional available subsurface moisture, higher production, different composition-SAVE4/DISP-PUCCI association, LECI4 minor) |
Table 1. Dominant plant species
Tree |
Not specified |
---|---|
Shrub |
(1) Sarcobatus vermiculatus |
Herbaceous |
(1) Distichlis spicata |
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