The acid-base buffer capacity of the light-gray forest soil with different erosion degree in the long agricultural use

The research results of the soil acid-base buffer capacity are presented in the article. It is determined that the increase in the alkaline interval buffer space is observed at a low erosion degree of light gray forest soil, and total soil buffer capacity decreases at the average degree, especially in the alkaline interval. The differently directed changes of the buffer capacity in the acid-alkaline interval occurred in the soil with high degree of erosion depending on the slope nature, which correlate with the total humus content, absorbed bases and alkaline-hydrolyzed nitrogen.