The problems of the integrity of plants and soils are considered with
respect to the initial vegetative production, photosynthesis, and carb
on and nitrogen cycling. The functions of the individual parts of plan
ts, microorganisms, and soil components in these processes are reveale
d. The results of experiments on determination of allelopathogenic org
anisms within a group of species of steppe vegetation of Tuva and Mong
olia are presented.