STUDIES OF THE EFFECT OF SIMULATED ACID-RAIN ON THE ECOLOGICAL EQUILIBRIUM OF THE SOIL SYSTEM .6. ECOLOGICAL EQUILIBRIUM DISTURBANCES IN THE SOIL EXPOSED TO SIMULATED ACID-RAIN

This paper aims at evaluating the bioenergetic reactions of the soil e xposed to the longlasting influence of acid precipitations. The experi mental data indicate that two phases of the effect of continuing soil treatment may be distinguished: the first, when the soil pH remains un changed, but some bioenergetical processes in soil are already affecte d, and the second, when the soil pH decreases with a continued decreas e of the intensity of the processes.