Ultisol and soil scientist
A representative soil profile of an Ultisol (Humic Hapludult). (Soil scientist photo provided by New Mexico State University, Carlsbad Environmental Monitoring & Research Center)
When photographing soils, a soil scientist will commonly use a knife to pick the profile face to show natural soil structure (left side of profile). Or, they may use a knife or shovel to smooth the surface (right side of the profile) which helps show change in color or horizonation.
Hapludults are the Udults that mostly formed in areas of acid rocks or sediments on surfaces that are at least of Pleistocene age. Where the soils are not cultivated, the vegetation consists almost exclusively of forest plants, either hardwood trees or conifers. Hapludults are extensive in the Southeastern United States, in the Middle Atlantic States, and on the coastal plain along the Gulf of Mexico in the Southern States east of the Mississippi River. Slopes generally are gently sloping to steep, but a few of the soils on the lowest part of the coastal plain are nearly level.
Humic Hapludults have a dark colored surface layer. They have a color value, moist, of 3 or less and a color value, dry, of 5 or less (crushed and smoothed sample) in either an Ap horizon that is 18 cm or more thick; or the surface layer after mixing of the upper 18 cm has these colors.
Some have an umbric epipedon or, if heavily limed, a mollic epipedon. Humic Hapludults are mainly in the mountains in the Southeastern United States. They are of moderate extent. The natural vegetation consisted of forest plants. Slopes range from nearly level to very steep. Many of these soils are used as cropland or forest. Some are used as pasture.
For more information about soil science, visit;
www.cemrc.org/projects/wipp-monitoring/study-design-for-t...
To learn more about describing soil horizons, visit;
www.youtube.com/watch?v=ZlyDyQT6_WE
To learn about the Field Book for describing soils, visit;
www.youtube.com/watch?v=e_hQaXV7MpM
For additional information about soil classification, visit:
www.nrcs.usda.gov/wps/portal/nrcs/main/soils/survey/class...
Ultisol and soil scientist
A representative soil profile of an Ultisol (Humic Hapludult). (Soil scientist photo provided by New Mexico State University, Carlsbad Environmental Monitoring & Research Center)
When photographing soils, a soil scientist will commonly use a knife to pick the profile face to show natural soil structure (left side of profile). Or, they may use a knife or shovel to smooth the surface (right side of the profile) which helps show change in color or horizonation.
Hapludults are the Udults that mostly formed in areas of acid rocks or sediments on surfaces that are at least of Pleistocene age. Where the soils are not cultivated, the vegetation consists almost exclusively of forest plants, either hardwood trees or conifers. Hapludults are extensive in the Southeastern United States, in the Middle Atlantic States, and on the coastal plain along the Gulf of Mexico in the Southern States east of the Mississippi River. Slopes generally are gently sloping to steep, but a few of the soils on the lowest part of the coastal plain are nearly level.
Humic Hapludults have a dark colored surface layer. They have a color value, moist, of 3 or less and a color value, dry, of 5 or less (crushed and smoothed sample) in either an Ap horizon that is 18 cm or more thick; or the surface layer after mixing of the upper 18 cm has these colors.
Some have an umbric epipedon or, if heavily limed, a mollic epipedon. Humic Hapludults are mainly in the mountains in the Southeastern United States. They are of moderate extent. The natural vegetation consisted of forest plants. Slopes range from nearly level to very steep. Many of these soils are used as cropland or forest. Some are used as pasture.
For more information about soil science, visit;
www.cemrc.org/projects/wipp-monitoring/study-design-for-t...
To learn more about describing soil horizons, visit;
www.youtube.com/watch?v=ZlyDyQT6_WE
To learn about the Field Book for describing soils, visit;
www.youtube.com/watch?v=e_hQaXV7MpM
For additional information about soil classification, visit:
www.nrcs.usda.gov/wps/portal/nrcs/main/soils/survey/class...