Yuri Petrovich Demakov

On the basis of a detailed study of the vegetative-detrital cover (VDC) of pine ecosystems of the Mari Zavolzhye, it is shown that, depending on its genesis, a specific hydrothermal regime of soils is formed in each type of forest. It has been established that the VDC has the highest moisture capacity in lichen pine-mossy pine forests in comparison with lichen pine forests. For the first time, based on the parameters of the VDC, a scale was proposed for estimating the rate of the biological cycle. It is established that the most important indicators are the power of the VDC, ash content and hydrolytic acidity.