黔中地区一、二代马尾松人工林土壤微生物数量及生物活性研究
Study on Soil Microorganism Quantity and Biochemical Activity of First- and Second-Generation of Pinus massoniana Plantations in Qianzhong
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Abstract: The quantity of different microorganisms, biochemical activity and the enzyme activity of the first- and second-generation of Pinus massoniana under similar condition were studied by using the methods of microorganism cultivation and laboratory analysis on soil microorganism biochemical activity and enzyme activity. The results showed that all the indexes of the soil microorganism quantity, biochemical activity and the change of soil enzyme activity (except Nitrification) in the first- and second-generation stands of P.massoniana showed the vertical distribution characteristics. The indexes decreased with the increase of soil depth, which reached significantly different. All the indexes of the second-generation P.massoniana about the soil microorganism quantity, biomass, biochemical activity and the change of soil enzyme activity were higher than those of first-generation. There was a significant positive correlation between bacterial amount and biomass carbon, and between bacterial amount and respiration. There was a very significant or significant positive correlation between the quantity of actinomyce, fungus and biomass carbon, respiration, invertase and catalase.
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Key words:
- Pinus massoniana
- / microorganism
- / biochemical activity
- / enzyme activity
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