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Chinese Journal of Applied Ecology ›› 2005, Vol. 16 ›› Issue (7): 1295-1298.

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Effects of elevated CO2 concentration on rhizosphere soil microbes under Pinus koraiensis and Pinus sylvestriformis seedlings

JIA Xia1,2,3, HAN Shijie1, ZHOU Yumei1, ZHANG Junhui1, ZOU Chunjing 1   

  1. 1. Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang 110016, China;
    2. Territorial Resources College of Changan University, Xian 710064, China;
    3. Graduate Shcool of Chinese Academy of Sciences, Beijing 100039, China
  • Received:2004-07-06 Revised:2004-10-02 Online:2005-07-15 Published:2005-07-15

Abstract: The study showed that under Pinus sylvestriformis seedlings,the amount of rhizosphere soil bacteria,but not fungi and actinomyces,increased significantly (P≤0.001) with CO2 enrichment (700 and 500 μmol·mol-1),and the same (P≤ 0.001) was under Pinus koraiensis seedlings,with the exceptions of 700 μmol CO2·mol-1 in August and 500 μmol CO2·mol-1 in July,compared to the ambient chamber and the ambient in each month.No significant effect of elevated CO2 was found on the amount of rhizosphere soil fungi except in September (P≤0.001),and the response of actinomyces to elevated CO2 was also insignificant.

Key words: CO2 concentration, Rhizosphere soil, Bacteria, Fungi, Actinomyces

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