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Chinese Journal of Applied Ecology ›› 1991, Vol. 2 ›› Issue (2): 174-177.

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Action intensity of nitrogen-fixing and denitrifying bacteria in chernozem polluted by heavy metals

Wang Shufang, Hu Liansheng, Ji Youhai, Wang Yulan, Yao Deming   

  1. Institute of Applied Ecology, Academia Sinica, Shenyang 110015
  • Received:1990-06-11 Online:1991-04-25 Published:1991-04-25

Abstract: In this paper, the action intensity of nitrogen-fixing and denitrifying bacteria in chernozem polluted by heavy metals is determined with gas chromatographic method at the same time. An exact and fast new method for defining critical indicator of soil microorganisms polluted by heavy metals such as Cd, As, Pb and Cu is provided.

Key words: Soil microorganism, Heavy metals, Critical toxic cencentration, Gas chromatographic method