Anthroportic Udorthent and landscape PRC-07
A soil profile of an Anthroportic Udorthent and landscape from the Guangdong Province of China near a burial site.
The soil over time had been disturbed by burial and removal. Bodies are buried in shallow graves and allowed to decompose. After about a year the remaining bones are moved to a pot for keeping. This process was originally done because the residents were not local and stored their family members so they could be eventually moved back home hundreds of miles away. This way of caring for the dead has been ongoing for over 500 years---hope burns eternal!
Anthroportic Udorthents are the Udorthents that have 50 cm or more of human-transported material.
Human-transported material (HTM) is parent material for soil that has been moved horizontally onto a pedon from a source area outside of that pedon by purposeful human activity, usually with the aid of machinery or hand tools. This pedon has been covered with soil material from an adjacent area.
This material often contains a lithologic discontinuity or a buried horizon just below an individual deposit. Note the buried soil and contrasting materials starting at the 55 centimeter depth.
Human-transported material may be composed of either organic or mineral soil material and may contain detached pieces of diagnostic horizons which are derived from excavated soils. It may also contain artifacts (e.g., asphalt) that are not used as agricultural amendments (e.g., biosolids) or are litter discarded by humans (e.g., aluminum cans).
Human-transported material has evidence that it did not originate from the same pedon which it overlies. In some soils, irregular distribution with depth or in proximity away from an anthropogenic landform, feature, or constructed object (e.g., a road or building) of modern products (e.g., radioactive fallout, deicers, or lead-based paint) may mark separate depositions of human-transported materials or mark the boundary within situ soil material below or beside the human-transported material. In other soils, a discontinuity exists between the human-transported material and the parent material (e.g., a 2C horizon) or root-limiting layer (e.g., a 2R layer) beneath it.
Multiple forms of evidence may be required to identify human-transported material where combinations of human actions and natural processes interact. Examples of these combinations include human-transported material deposited by dredging adjacent to active beaches, human- or water-deposited litter on flood plains and beneath water bodies, and deposits from natural geologic events (e.g., airfall volcanic ash) mantling anthropogenic landforms and microfeatures. Therefore, it is often the preponderance of evidence, including published or historical evidence and onsite observations, that allows identification of human-transported material.
For more information about describing soils, visit:
www.nrcs.usda.gov/Internet/FSE_DOCUMENTS/nrcs142p2_052523...
For additional information about soil classification using Soil Taxonomy, visit:
Anthroportic Udorthent and landscape PRC-07
A soil profile of an Anthroportic Udorthent and landscape from the Guangdong Province of China near a burial site.
The soil over time had been disturbed by burial and removal. Bodies are buried in shallow graves and allowed to decompose. After about a year the remaining bones are moved to a pot for keeping. This process was originally done because the residents were not local and stored their family members so they could be eventually moved back home hundreds of miles away. This way of caring for the dead has been ongoing for over 500 years---hope burns eternal!
Anthroportic Udorthents are the Udorthents that have 50 cm or more of human-transported material.
Human-transported material (HTM) is parent material for soil that has been moved horizontally onto a pedon from a source area outside of that pedon by purposeful human activity, usually with the aid of machinery or hand tools. This pedon has been covered with soil material from an adjacent area.
This material often contains a lithologic discontinuity or a buried horizon just below an individual deposit. Note the buried soil and contrasting materials starting at the 55 centimeter depth.
Human-transported material may be composed of either organic or mineral soil material and may contain detached pieces of diagnostic horizons which are derived from excavated soils. It may also contain artifacts (e.g., asphalt) that are not used as agricultural amendments (e.g., biosolids) or are litter discarded by humans (e.g., aluminum cans).
Human-transported material has evidence that it did not originate from the same pedon which it overlies. In some soils, irregular distribution with depth or in proximity away from an anthropogenic landform, feature, or constructed object (e.g., a road or building) of modern products (e.g., radioactive fallout, deicers, or lead-based paint) may mark separate depositions of human-transported materials or mark the boundary within situ soil material below or beside the human-transported material. In other soils, a discontinuity exists between the human-transported material and the parent material (e.g., a 2C horizon) or root-limiting layer (e.g., a 2R layer) beneath it.
Multiple forms of evidence may be required to identify human-transported material where combinations of human actions and natural processes interact. Examples of these combinations include human-transported material deposited by dredging adjacent to active beaches, human- or water-deposited litter on flood plains and beneath water bodies, and deposits from natural geologic events (e.g., airfall volcanic ash) mantling anthropogenic landforms and microfeatures. Therefore, it is often the preponderance of evidence, including published or historical evidence and onsite observations, that allows identification of human-transported material.
For more information about describing soils, visit:
www.nrcs.usda.gov/Internet/FSE_DOCUMENTS/nrcs142p2_052523...
For additional information about soil classification using Soil Taxonomy, visit: