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研究了2003 年夏季长白赤松和红松土壤微生物活性对高浓度CO2的响应规律。结果表明,长白赤松和红松土壤细菌数量受高浓度CO2影响显著(p < 0.05)减少;与对照箱(350 μmol ·mol-1 CO2)和裸地(350 μmol ·mol-1 CO2)相比,红松土壤淀粉酶和转化酶活性降低,而长白赤松土壤淀粉酶和转化酶活性却表现为增加;同时发现受700 μmol ·mol-1 CO2处理的红松和长白赤松土壤微生物生物量碳均表现为显著降低。DGGE 结果表明:受高浓度CO2 的影响,长白赤松和红松土壤细菌群落结构发生了明显的变化。研究结果表明土壤微生物对高浓度CO2的响应规律与所研究的的树种有关。图2 表2 参29。
The response of soil microbial activity to high concentration of CO2 in the summer of 2003 was studied. The results showed that the number of bacteria in Pinus sylvestris var. Mongolica and Pinus koraiensis decreased significantly (p <0.05) by high concentration of CO2 compared with control (350 μmol · mol-1 CO2) and bare soil (350 μmol · mol- 1 CO2) , While the activities of amylase and invertase in Pinus koraiensis soil decreased, but the activities of amylase and invertase increased in Pinus sylvestris var. Mongolica soil. At the same time, it was found that the soil microbial biomass carbon of Pinus koraiensis and Pinus sylvestris var. The performance was significantly reduced. DGGE results show that the bacterial community structure of Pinus sylvestriformis and Pinus koraiensis plants changed obviously under the influence of high CO2 concentration. The results showed that the response of soil microorganisms to high concentration of CO2 was related to the studied species. Figure 2 Table 2 Reference 29.