Influence of pH, Organic Carbon and Total Nitrogen Content on the Amount and Distribution of the of Different Microbial Groups in the Organic Layers of Luvisols

The influence of altitude, pH, organic C and total nitrogen content on the Quantity and Distribution of soil microflora in the organic layers of Luvisols was investigated. The experimental plots include A horizon of 5 soil profiles. Aiming to determine the biogenity of analyzed plots, the total microbial number and the percentage share of different microbial groups has been examined. The samples were taken from forest soil according to microbiological requirements. The standard microbiological method for analyses was used. The obtained results showed different biogenity and percentage share of microbial groups according to the different environmental conditions – pH, org. C and total N. Strong correlation between total microbial number and org. C and total N has been found. Soil with the largest total microbial number (6.7 lg CFU/g dry soil) was the soil with the highest account of org. C (49.98 g.kg -1) – tested plot (TP) 2. pH as a parameter of soil environment has been correlated with the distribution of microbial groups.