Udivitrand and landscape NZ
Udivitrand Landscape, New Zealand — This landscape occurs within the Taupo Volcanic Zone on the North Island of New Zealand. This area includes the Taupo caldera volcano, which is the most frequently active rhyolitic volcano on Earth. Much of the native podocarp/ hardwood forest was destroyed by the approximately 233 AD Taupo eruption, which produced a violent pyroclastic flow that spread over an area of 20,000 sq km in approximately 7 minutes. Mean annual precipitation is approximately 1,100-1,200 mm (43-47 inches). Current land uses include dairy, sheep and beef production, and plantation forest (seen in background). (Image from University of Idaho; information courtesy of Dr. David Lowe, University of Waikato) (Notes and photo downloaded from: www.uidaho.edu/cals/soil-orders/andisols)
For more information about Dr. Lowe and his research, visit:
www.waikato.ac.nz/staff-profiles/people/dlowe
Udivitrands are the more or less well drained Vitrands that have a udic moisture regime. Characteristically, these soils have an ochric epipedon and a cambic horizon. Some have an argillic horizon. Most of the Udivitrands in the United States developed in Holocene deposits under coniferous forest vegetation.
Vitrands are the more or less well drained, coarse textured Andisols. These are relatively young soils that occur mostly near volcanoes. Most of the Vitrands in the United States are in Oregon, Washington, and Idaho. Vitrands formed mainly under coniferous forest vegetation. Characteristically, Vitrands have an ochric or mollic epipedon and a cambic horizon. Most of the Vitrands in the United States developed in Holocene deposits.
For additional information about U.S. Soil Taxonomy, visit:
www.nrcs.usda.gov/wps/portal/nrcs/detail/soils/survey/cla...
Udivitrand and landscape NZ
Udivitrand Landscape, New Zealand — This landscape occurs within the Taupo Volcanic Zone on the North Island of New Zealand. This area includes the Taupo caldera volcano, which is the most frequently active rhyolitic volcano on Earth. Much of the native podocarp/ hardwood forest was destroyed by the approximately 233 AD Taupo eruption, which produced a violent pyroclastic flow that spread over an area of 20,000 sq km in approximately 7 minutes. Mean annual precipitation is approximately 1,100-1,200 mm (43-47 inches). Current land uses include dairy, sheep and beef production, and plantation forest (seen in background). (Image from University of Idaho; information courtesy of Dr. David Lowe, University of Waikato) (Notes and photo downloaded from: www.uidaho.edu/cals/soil-orders/andisols)
For more information about Dr. Lowe and his research, visit:
www.waikato.ac.nz/staff-profiles/people/dlowe
Udivitrands are the more or less well drained Vitrands that have a udic moisture regime. Characteristically, these soils have an ochric epipedon and a cambic horizon. Some have an argillic horizon. Most of the Udivitrands in the United States developed in Holocene deposits under coniferous forest vegetation.
Vitrands are the more or less well drained, coarse textured Andisols. These are relatively young soils that occur mostly near volcanoes. Most of the Vitrands in the United States are in Oregon, Washington, and Idaho. Vitrands formed mainly under coniferous forest vegetation. Characteristically, Vitrands have an ochric or mollic epipedon and a cambic horizon. Most of the Vitrands in the United States developed in Holocene deposits.
For additional information about U.S. Soil Taxonomy, visit:
www.nrcs.usda.gov/wps/portal/nrcs/detail/soils/survey/cla...