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在八大公山原始次生林设置的标准地内，深度０～４５ｃｍ土层每克干土中同一类群的微生物（除硝化细菌外）数量变动范围不大．其中好气性细菌在１．７０×１０６～７．１×１０６个之间，真菌在１．３×１０６～９．６×１０６个之间，固氮菌在１．５×１０５～２．１×１０５个之间，厌气性细菌在５．５×１０４～６．５×１０５个之间，放线菌在６．７×１０３～９．３×１０４个之间．由于土温常年偏低（８月份平均气温最高也只有２２．８℃）以及土壤水分系数较大（平均在４０％左右），导致土壤中微生物的数量较少，１克干土中的微生物总数量只有１．７×１０７个．同样，空气中和水中的微生物也非常少，日平均每立方米空气中所含真菌仅为２５３个，好气性细菌为１０４个，放线菌仅１３个，空气异常清洁；平均每毫升水中，好气性细菌只有４０个，真菌只有３个，放线菌仅１．５个．
In the standard set in the primary secondary forest of Badala Mountain, the quantity of microorganisms (except nitrifying bacteria) in the same group of dry soil in 0 ~ 45cm soil depth varied little. Among them, the number of aerobic bacteria ranged from 1.70 × 106 to 7.1 × 106, the fungi ranged from 1.3 × 106 to 9.6 × 106, and the azotobacteria ranged from 1.5 × 105 to 2.1 × 105, anaerobic bacteria in 5.5 × 104 ~ 6.5 × 105, Actinomyces 6.7 × 103 ~ 9.3 × 104 between. Due to the low soil temperature (only 22.8 ℃ in August with the highest average temperature) and the large coefficient of soil moisture (on average about 40%), the amount of microorganisms in the soil is relatively small. The total amount of microorganisms in 1 g of dry soil The number is only 1.7 × 107 months. Similarly, the air and water microbes are also very small, the average daily per cubic meter of air contains only 253 fungi, aerobic bacteria was 104, actinomycetes only 13, the air was abnormally clean; the average per milliliter of water, There are only 40 aerobic bacteria, only 3 fungi and only 1.5 actinomycetes.