Northern Eastside Terraces (Bailey)
Published: September 22, 2009, 2:19 pm
Updated: September 22, 2009, 2:19 pm
This article has been reviewed by the following Topic Editor:
Mark McGinleyThis subsection is on terraces along the eastern edge of the Sacramento Valley that are adjacent to the Southern Cascade Ranges. It is hot and subhumid. MLRA 17d.
Subsection 262Ab, near Chico (James R. Nelson)
Lithology and Stratigraphy
This subsection contains Pleistocene and recent alluvium from volcanic rock sources.
Subsection 262Ab, Valley grassland (James R. Nelson)
Geomorphology
This subsection is on very gently sloping to sloping terraces and small areas of floodplain and alluvial fans along streams that cross from mountains of the Southern Cascade Ranges to reach the Sacramento River. The subsection elevation range is from 200 to about 600 feet. Fluvial erosion is the main geomorphic process.
Soils
The soils are mostly Typic Durixeralfs and Mollic Haploxeralfs. The soils are well drained. Bicarbonate weathering and leaching and accumulation of clay and silica in subsoils are the main pedogenic processes in the terrace soils. The soil temperature regimes are thermic. Soil moisture regimes are xeric.
Vegetation
The predominant natural plant communities are Needlegrass grasslands, and Northern claypan vernal pools are common.
Characteristic series by lifeform include:
Grasslands: California annual grassland series, Purple needlegrass series.
Vernal pools: Northern volcanic mudflow vernal pools.
Forests and woodlands: California sycamore series.
Climate
The mean annual precipitation is about 18 to 25 inches. It is practically all rain. Mean annual temperature is about 58° to 60° F. The mean freeze-free period is about 250 to 275 days.
Surface Water
Streams in this subsection drain to the Sacramento River. All but the larger streams are generally dry during the summer. There are no lakes, but there is temporary ponding in vernal pools on Pleistocene terraces.
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Citation
USFS (Content Source);Mark McGinley (Topic Editor) "Northern Eastside Terraces (Bailey)". In: Encyclopedia of Earth. Eds. Cutler J. Cleveland (Washington, D.C.: Environmental Information Coalition, National Council for Science and the Environment). [First published in the Encyclopedia of Earth September 22, 2009; Last revised Date September 22, 2009; Retrieved June 18, 2013 <http://www.eoearth.org/article/Northern_Eastside_Terraces_(Bailey)>
This subsection is on terraces along the eastern edge of the Sacramento Valley that are adjacent to the Southern Cascade Ranges. It is hot and subhumid. MLRA 17d.
Subsection 262Ab, near Chico (James R. Nelson)
Lithology and Stratigraphy
This subsection contains Pleistocene and recent alluvium from volcanic rock sources.
Subsection 262Ab, Valley grassland (James R. Nelson)
Geomorphology
This subsection is on very gently sloping to sloping terraces and small areas of floodplain and alluvial fans along streams that cross from mountains of the Southern Cascade Ranges to reach the Sacramento River. The subsection elevation range is from 200 to about 600 feet. Fluvial erosion is the main geomorphic process.
Soils
The soils are mostly Typic Durixeralfs and Mollic Haploxeralfs. The soils are well drained. Bicarbonate weathering and leaching and accumulation of clay and silica in subsoils are the main pedogenic processes in the terrace soils. The soil temperature regimes are thermic. Soil moisture regimes are xeric.
Vegetation
The predominant natural plant communities are Needlegrass grasslands, and Northern claypan vernal pools are common.
Characteristic series by lifeform include:
Grasslands: California annual grassland series, Purple needlegrass series.
Vernal pools: Northern volcanic mudflow vernal pools.
Forests and woodlands: California sycamore series.
Climate
The mean annual precipitation is about 18 to 25 inches. It is practically all rain. Mean annual temperature is about 58° to 60° F. The mean freeze-free period is about 250 to 275 days.
Surface Water
Streams in this subsection drain to the Sacramento River. All but the larger streams are generally dry during the summer. There are no lakes, but there is temporary ponding in vernal pools on Pleistocene terraces.
Are you absolutely sure you want to delete this article? This process cannot be undone and is permanent.
Yes, Delete This Article
Are you absolutely sure you want to remove this article? This process cannot be undone and is permanent.
Yes, Remove This Article
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