ИСТИНА

It was explained the genesis of different soil types from the standpoint of biochemical com￾position of plants. It was proposed a systematic methodology of research of lignin transformations in the series: plant tissues – litter – litter – soil – humic acid. It was proposed a typology of process￾es of lignin phenols biochemical transformations in soils of zonal row: forest, steppe, meadow, trop￾ical, agro-anthropogenic types; it is proved that the structure of the molecules humic acids is largely determined by the phylogenetic origin of lignin. The fields of application of lignin phenols in the practice of agriculture and medicine are proposed.