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cje ›› 2004, Vol. ›› Issue (2): 136-140.

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A preliminary study on soil microorganisms in different Karst ecosystems of Southwestern China

LI Wei1, YU Longjiang1, YUAN Daoxian2, XU Huibi1   

  1. 1. School of Life Science and Technology, Huazhong University of Science and Technology, Wuhan 430074, China;
    2. Karst Dynamics Laboratory, Ministry of Land and Resources, Guilin 541004, China
  • Received:2002-09-09 Revised:2002-11-18 Online:2004-04-10

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Abstract: To find the concrete role of microbes in the Karst processes, it is necessary to investigate the ecological distribution and characteristics of soil microorganisms in Karst areas. The number of microorganisms of soil samples collected from 4 different Karst areas of Southwest China, Jinfu mountain of Chongqing,Misuga of Liu Panshui, Nongla of Guangxi and the Yaji Karst Experimental Station of Guilin, were determined in this paper. The comparative analysis showed that the number and composition of soil microorganisms correlated highly with characteristics of Karst ecosystems featured by their different landscape and vegetation. The predominant bacteria in soil samples from Nongla of Guangxi and the Karst Experimental Station were analyzed and pre-identified as well. The predominant amount of Azotobacteraceae colonies showed that the soil fertility of both the two Karst ecosystems was improving.

Key words: 95Zr, Marine environment, Marine organism, Sediment

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