Abstract: The total number of microbes varies in different soil types of Lushan Mountain,being the highest(1.2×10⁹ numbers g dry soil）in mountainous yellow brown soil.The ecologial distribution of various microbial groups in different soil types is simllar.Bacteria is more than actinomyces and fungi. No nitrifying bacte-ria can be found In solls of Lushan Mountain because of the lower soil pH. Microbes in upper soil layer are more than in bottom layer.Soil urease activity has a poxetive correlatiOn with the number of soil mi-crobes and the contents of soil organic matter and soil nitrogen, Mountainous yellow brown soil has the highest number of microbes, and its urease activity is the highest.

Key words: lignocellulolytic microorganism, plate, mixed culture, interaction.