Modeling the hydrochemical drain of the mountain rivers. 1. Drain of mineral compounds of nitrogen

On the example of 34 middle size and small rivers of Altai-Sayan highland by means of system and analytical modeling three universal mathematical models of seasonal and long-term dynamics of a drain of mineral compounds of nitrogen (NO2-, NO3-, NH4+) are developed. For the accounting of landscape structure of river basins 13 typological groups are allocated to geosystems. Deposits of each group and arable land to the corresponding hydrochemical drain for four hydrological seasons of year are calculated.