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Pleasant Valley/Kettleman Plain
Ecoregion
in
Coast Ranges
,
CA
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The Pleasant Valley/Kettleman Plain ecoregion contains disjunct small valleys and relatively flat plains of Quaternary alluvium that contrast with the steeper, adjacent hills of Ecoregions 6z and 6aa. Elevations in the southern areas are 600 to 1,000 feet. Ecoregion 6ab also includes the Panoche Valley in the north, with elevations mostly 1,000–1,800 feet. Some of the soils are similar to soils in the southern Central California Valley ecoregion (7), and cropland occurs here (typically dryland grain, such as barley and winter wheat). Other parts of the region are used as rangeland, especially following seasonal rains. Native grass and shrub communities have been replaced by cropland or species such as redstem filaree, soft chess, red brome, foxtail barley, and burclover. Soil temperature regimes are thermic and soil moisture regimes are xeric to aridic.
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Ecoregion
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