Dystrudept and landscape
A Humic Pachic Dystrudepts soil and landscape in Idaho. These soils have an umbric or mollic epipedon 50 cm or more thick. They are otherwise like the soils of the Typic subgroup. Humic Pachic Dystrudepts are of small extent in the United States. They are widely distributed but are concentrated in the mountains of the Eastern and Northwestern States. The native vegetation consists mostly of mixed forest. Most of these soils are used as forest. Many of the less sloping soils have been cleared and are used as cropland or pasture.
The umbric horizon (Latin: umbra, shade) is a thick, dark colored, surface horizon rich in organic matter. It is identified by its dark color and structure. Normally it has a pH of less than 5.5. It is similar to a mollic epipedon but with a base saturation of less than 50 percent.
Dystrudepts are the acid Udepts of humid and perhumid regions. They developed mostly in late-Pleistocene or Holocene deposits. Some developed on older, steeply sloping surfaces. The parent materials generally are acid, moderately or weakly consolidated sedimentary or metamorphic rocks or acid sediments. A few of the soils formed in saprolite derived from igneous rocks. The vegetation was mostly deciduous trees.
For additional information about Idaho soils, please visit:
storymaps.arcgis.com/stories/97d01af9d4554b9097cb0a477e04...
Dystrudept and landscape
A Humic Pachic Dystrudepts soil and landscape in Idaho. These soils have an umbric or mollic epipedon 50 cm or more thick. They are otherwise like the soils of the Typic subgroup. Humic Pachic Dystrudepts are of small extent in the United States. They are widely distributed but are concentrated in the mountains of the Eastern and Northwestern States. The native vegetation consists mostly of mixed forest. Most of these soils are used as forest. Many of the less sloping soils have been cleared and are used as cropland or pasture.
The umbric horizon (Latin: umbra, shade) is a thick, dark colored, surface horizon rich in organic matter. It is identified by its dark color and structure. Normally it has a pH of less than 5.5. It is similar to a mollic epipedon but with a base saturation of less than 50 percent.
Dystrudepts are the acid Udepts of humid and perhumid regions. They developed mostly in late-Pleistocene or Holocene deposits. Some developed on older, steeply sloping surfaces. The parent materials generally are acid, moderately or weakly consolidated sedimentary or metamorphic rocks or acid sediments. A few of the soils formed in saprolite derived from igneous rocks. The vegetation was mostly deciduous trees.
For additional information about Idaho soils, please visit:
storymaps.arcgis.com/stories/97d01af9d4554b9097cb0a477e04...