Biodiversity Science ›› 2000, Vol. 08 ›› Issue (3): 297-303.doi: 10.17520/biods.2000041

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A preliminary study on soil microorganisms of artificial vegetation in the center of Taklimakan Desert

GU Feng-Xue, PAN Bo-Rong, WEN Qi-Kai, YANG Yu-Suo   

  1. 1) Xinjiang Institute of Ecology and Geography , Chinese Academy of Sciences , Urumqi 830011
    2) Xinjiang Agricultural University , Urumqi  830052
  • Received:1999-05-24 Revised:2000-06-20 Online:2000-08-20

Artificial plantations were set up by irrigating saline ground water (salt content 4~5 g/ L ) in extremely arid areas in the center of Taklimakan Desert . Soil microorganisms were detected in the drift sand dunes and afforestation plots in March and J une 1998. The result showed that : 1) after the establishment of artificial vegetation , the quantity of microorganisms increased greatly with ages ; 2) soil microbial taxa varied with plant species in the plots of same age ; 3) bacteria were predominant , accounting for 90 % of the total , actinomyces the next and fungi the least ; and 4) there are more microorganisms in the topsoil (0~10 cm deep) of afforested sand dunes than in the subsoil layers (10~50 cm deep) . The changes in quantities of soil microorganisms showed that the drift sand was developing into more fertilized soil.

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