| Popis: |
The unique properties of anthropogenic (disturbed) soils have generated a variety of views and proposed taxonomic systems to deal with identification, inventory, and interpretations of these soils. During the soil survey of Knox County, Tennessee, a special study was conducted on two anthropogenic soil profiles. After classifying the two profiles using the three taxonomic methods, it was recognized that no single taxonomic method seemed to be sufficient to properly classify these soils. It was found that current classification schemes for disturbed soils gave different results depending on the system. The objectives of this paper were to combine useable parts from various proposed disturbed soil taxonomy schemes and discuss the implications of a new system made up of combined parts of other proposed systems. Soil Taxonomy, anthropogenic soil classification according to Fanning and Fanning, and the proposal for Spolents developed at West Virginia University along with Official Series Descriptions were all evaluated. The result of the study was a new suborder, Anthrents, which could be added to the Entisol order and separated from the other suborders by having at least 3 of the 9 special criteria common to anthropogenic soils. Twenty anthropogenic soil profiles/series using Soil Taxonomy, the proposed Spolents, the method of Fanning and Fanning, and the proposed method of classification presented in this paper (Anthrents) were classified to the family level of classification and compared against each other. Using the newest system (proposed in this paper), 16 of the 20 soils were reclassified and the unique soil properties in these soils were readily identified. Amendments should be made to Soil Taxonomy to separate anthropogenic soils from other suborders and then structured to convey the unique properties associated with these soils. |
