| 长白赤松和红松土壤微生物活性对高浓度CO2的响应 |
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| 作者单位： | 中科院沈阳应用生态研究所,沈阳,110016;长安大学资源学院,西安;中科院研究生院,北京;中科院沈阳应用生态研究所,沈阳,110016 |
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| 基金项目： | The study was supported by Major State Basic Research Development Program of China （2002CB412502） and the Knowledge Innovation Project from Chinese Academy of Sciences （KZCXI-SW-01-03）. |
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| 摘 要： |
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| 关 键 词： | 土壤酶 细菌群落结构 细菌数量 高浓度CO2 |
| 文章编号： | 1007-662X（2005）03-0219-04 |
| 收稿时间： | 2005-01-12 |
| 修稿时间： | 2005-03-16 |
Responses of soil microorganisms to elevated CO2 in experiment sites ofPinus sylvestriformis andPinus koraiensis |
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| Authors: | Jia Xia Han Shi-jie Zhou Yu-mei |
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| Institution: | (1) Institute of Applied Ecology, Chinese Academy of Sciences, 110016 Shenyang, P. R. China;(2) College of Earth Science and Land Resources Management, Chang'an University, 710064 Xi'an, P. R. China;(3) Graduate Academy of the Chinese Academy of Sciences, 100039 Beijing, P. R. China |
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| Abstract: | Responses of soil microbial activities to elevated CO2 in experiment sites ofPinus sylvestriformis andPinus koraiensis seedlings were studied in summer in 2003. The results indicated the number of bacteria decreased significantly (p<0.05) under elevated CO2 forPinus sylvestriformis andPinus koraiensis. Amylase and invertase activities in soil increased forPinus sylvestriformis and decreased forPinus koraiensis with CO2 enrichment compared with those at ambient (350 μmol·mol−1). The size of microbial biomass C also decreased significantly at 700 μmol·mol−1 CO2. Bacterial community structure had some evident changes under elevated CO2 by DGGE (Denaturing Gradient Gel Electrophoresis) analysis of bacterial 16S rDNA gene fragments amplified by PCR from DNA
extracted directly from soil. The results suggested that responses of soil microorganisms to elevated CO2 would be related to plant species exposed to elevated CO2.
Foundation item: The study was supported by Major State Basic Research Development Program of China (2002CB412502) and the Knowledge Innovation
Project from Chinese Academy of Sciences (KZCX1-SW-01-03).
Biography: JIA Xia (1975), female, Ph. D. candidate of Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang 110016,
P. R. China.
Responsible editor: Song Funan |
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| Keywords: | Bacterial community Bacterial numbers Elevated CO2 Soil enzyme activity |
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