The Humic acids оf different chernozems subtypes оf Transbaikalia
The elemental composition of humic acid products of different subtypes of chernozems of the Transbaikal, formed in sharply different bioclimatic conditions on different parent rocks was studied. It was revealed that in chernozems cold and permafrost areas are formed humic acids with low carbon and nitrogen, and is not always known pattern benzenoid increasing degree, at lower H : C, such as a carbonate-free subtype. Subtype level brings significant changes in the chemical structure of humic acids.