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研究了厦门西港西南部潮间带无植被滩涂土壤三大类群微生物的数量 ,结果表明 :光滩土壤中平均总菌数为 1 8.4× 1 0 4个 /g(dry) ,细菌、放线菌和丝状真菌平均数量分别为 1 7.4× 1 0 4、1 0 .1× 1 0 3 和 2 .1× 1 0 1个 /g(dry) ,分别占总菌数的94.5 3%、5 .45 %和 0 .0 2 % ;不同位点的总菌数及细菌、放线菌、丝状真菌的数量与它们所占总菌数的百分比存在着差异 ,这与不同位点的土壤有机质含量、N含量和受污染干扰的程度相关 ,数量特征可作为环境监测的生物学指标之一 ;放线菌和丝状真菌的数量与土壤盐含量有关 ,放线菌在低盐份下的培养数量多、生长好 ,高盐份胁迫可能是丝状真菌数量少的原因之一。
The results showed that the average total number of bacteria in Guangtan soil was 1 8.4 × 10 4 dry / g, bacteria, actinomycetes And filamentous fungi were 1 7.4 × 10 4,1 0 .1 × 10 3 and 2 × 10 1 / g dry, accounting for 94.5 3% of the total number of bacteria, respectively. 45%, and 0. 02%. The total number of bacteria at different sites and the percentages of bacteria, actinomycetes and filamentous fungi were the same as the percentage of their total bacteria, which was related to the content of soil organic matter , N content is related to the degree of contamination disturbance. The quantitative characteristics can be used as one of the biological indicators for environmental monitoring. The numbers of actinomycetes and filamentous fungi are related to soil salt content. The quantity of actinomycetes cultured in low salinity Many, good growth, high salt stress may be one of the reasons for the small number of filamentous fungi.