Biodiversity Science ›› 1995, Vol. 03 ›› Issue (3): 134-138.doi: 10.17520/biods.1995024

• 论文 • Previous Article     Next Article

Preliminary approach on the soil microbial ecological effect in the Great Wall Station area, Antarctic

Xiao Changsong, Liu Dali, Zhou Peijin   

  1. Institute of Microbiology,Chinese Academy of Sciences,Beijing,100080
  • Received:1994-09-27 Revised:1994-12-17 Online:1995-08-20

Soil microbes collected from Great Wall Station area in Antarctica were studied. Results showed thatthe total number of ammonification bacteria was 104~106 cells/per gram of soil. Ammonification bacteria belong to 7 genera, Micrococcus, Staphylococcus, Pseudomonas, Bacillus, Alcaligenes, Flavobacterium,Arthrobacter. The total number of nitrogen-fixing bacteria was 105~107 cells/g,which included only Azotobacter. The total number of nitrobacteria was 104 cells/g,and this nitrobacteria included Nitrobacter and Nitrococcus. The total number of fungi was 103 cells/g, such fungi belong to 5 genera,Penicillium,Chrysosporium , Cladosporium, Aspergillus and Eurotium. The total number of denitrifying bacteria was102~ 104 cells/g, This bacteria were Pseudomonas,Bacillus and Micrococcus. Actinomycete were also identified Streptomyces, Micromonospora and Nocardia. The appearing rate of psychrophilic miorobes(growing below 12℃) are 42% for Pseudomonas,  35% for Bacillus, 31%for Mcrococcus, 27% for Arthrobacter, 58% for Penicillium, 54% for Cladosporium, 81% for Nitrobacter and 88% for Azotobacter; denitrifying bacteria are 58% for Pseudomonas and 38% for Bacillus. The relationship between soilmicrobes and  total C and N of soil samples, and the ecological effect of soil microbes participating nitrogen cycle in this area were also discussed.

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