Evolutionary-genetic classification of soils and nonsoil surface formations

Several approaches toward the creation of an evolutionary-genetic classific ation of sails and non-soil surface formations are discussed. This classifi cation is considered an auxiliary component of a comprehensive genetic taxo nomy of soils and other types of terrestrial surface formations. The full s ystem consists of three independent components: (a) a profile-genetic class ification based on the analysis of soil morphology, (b) a factor-based clas sification, and (c) an evolutionary-genetic classification. Components (b) and (c) have an auxiliary character with respect to the main profile-geneti c component of soil taxonomy.