The Effect of Siberian Tree Species on the Mineralization Rate of Soil Organic Matter

摘要

—The mineralization of organic matter in the soils under the six main Siberian forest-forming specieswas studied. The nitrogen mineralization and nitrification were the most affected by the different tree species.The rate of the CO_2 formation was similar in the soils under the different tree species. The factors affecting the variation of the data characterizing the microbiological processes were revealed. The nitrogen mineralizationand nitrification correlated with the contents of the soil carbon, nitrogen, andNH_4~+ and the soil acidity, while the carbon mineralization correlated only with the NH_4~+ concentration and the C/N ratio.