Features of soil microorganism in mixed forest of Eucalyptus spp. and Acacia confusa.
Guangxi Agricultural Sciences(2009)
摘要
To discuss the soil fertility and ecological effects of artificial mixed forest land of Eucalyptus and Acacia confusa in southern Guangxi,the soil microorganism groups and distribution in two sets of pure and mixed forest of Euca-lyptus and Acacia forest of Qinlian Forest Farm in Guangxi were investigated. The results showed that in Qinlian Forest Farm,soil microorganism in artificial forest land were mainly concentrated in 0-20 cm of soil layer and their quantity rapidly decreased with the increase of soil depth. The order of the total number of soil microorganisms in different forest lands was:mixed forest A·confusa forest Eucalyptus forest. In different forest lands,among three kinds of microorganisms including bacteria,actinomyces and fungi,bacteria were the largest proportion of population,followed by fungi and actinomyces. These results indicated that mixed forest of A.confusa and Eucalyptus had good ecological dominance,and it would provide a reference for creating mixed forest of A.confusa and Eucalyptus in Guangxi at present.
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关键词
ecological effects,soil microflora,mixed forest,distribution,acacia confusa,eucalyptus,soil fertility,microorganisms,microbial ecology,soil bacteria,forests
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