Ecological site group DX035X04CESG03
Chaco Mesa LRU Subset - Saline and Sodic Uplands
Last updated: 11/02/2022
Accessed: 05/02/2024
Ecological site group description
Key Characteristics
- Chaco Mesa. This LRU subset is composed of Cretaceous materials, is generally above 1900 m in elevation, and does not drain directly into the San Juan River. The Chaco Mesa subset is further distinguished from the Bisti Lowlands in that the former receives more monsoonal moisture, harbors more warm-season grasses, and experiences a considerable amount of blowing sands.
- Sites that occur on "upland", water-shedding landforms. Elevated terraces are included in this group.
- Soils are > 50 cm to lithic or paralithic contact (root-restrictive bedrock).
- Sites that have saline and/or sodic soils. In these cases soils regularly have an EC > 4.0 and/or SAR > 10 or ESP > 15.
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.
Physiography
On upland landforms. Drainageways are excluded. Elevated terraces are included. Flooding does not occur.
Soil features
Soils are at least moderately saline and/or sodic.
Major Land Resource Area
MLRA 035X
Colorado Plateau
Subclasses
- DX035X03E005–Salt Flats
- R035XB008NM–Sodic Slopes
- R035XB016NM–Clay Loam Terrace (Sodic) 7-10"
- R035XB017NM–Cobbly Slopes 6-10"
- R035XB022NM–Loamy Upland 6-10"p.z. sodic
- R035XB033NM–Sandy Loam Upland 6-10" sodic
- R035XB034NM–Sandy Terrace 6-10" sodic
- R035XB227AZ–Sandy Loam Upland 6-10" p.z. Saline-Sodic
- R035XB228AZ–Sandstone Upland 6-10" p.z. Sodic
- R035XB237AZ–Clay Loam Terrace 6-10" p.z. Sodic
- R035XB268AZ–Shale Hills 6-10" p.z.
- R035XB271AZ–Loamy Upland 6-10" p.z. Saline-Sodic
- R035XB274AZ–Sandy Loam Upland 6-10" p.z. Saline
- R035XB276AZ–Siltstone Upland 6-10" p.z. Saline
- R035XB277AZ–Siltstone Upland 6-10" p.z. Limy
- R035XB278AZ–Loamy Upland 6-10" p.z. Saline, Gypsic
- R035XB279AZ–Clay Loam Upland 6-10" p.z. Sodic, Gypsic
Stage
Provisional
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