Study on Soil Microorganism Quantity and Biochemical Activity of First- and Second-Generation of Pinus massoniana Plantations in Qianzhong

CAI Qiong; DING Gui-jie

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.

1. Institute of Forestation and Ecology, Guizhou University, Guiyang 550025, Guizhou, China

Received Date: 2012-06-28

Accepted Date: 2012-09-25

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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Reference (25)

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Study on Soil Microorganism Quantity and Biochemical Activity of First- and Second-Generation of Pinus massoniana Plantations in Qianzhong

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