STOCKS OF SOIL ORGANIC MATTER IN MONITORING OF ALAS ECOSYSTEMS IN THE LENA-VILYUI INTERFLUVE
The study is devoted to the evaluation of soil organic matter reserves in the ecosystems of alass of the Lena-Vilyui interfluve. The analysis of regularity of change of this index in the course of evolution of alass soils is given. The largest amount of humus is concentrated in the upper layer of the studied soils. In all investigated soils the carbon content did not depend on the nature of anthropogenic load, but the carbon content in meadow-chernozem and chernozem-meadow soils in unused alas was higher than in similar alas soils under intensive agricultural use. This suggests the possibility of the studied indicator in the environmental monitoring of the degree of anthropogenic transformation of grass ecosystems.