摘要
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 microbial amounts of mudflat soil without vegetation at southwest in west Xiamen Harbour were studied. The results were indicated as follows:1) The mean total cell amount in mudflat soil was 18.4×10 4 ind./g(dry), of which the bacteria, actinomyces and filamentous fungi were 17.4×10 4, 10.1×10 3 and 2.1×10 1 ind./g(dry), respectively. Their percentages in total amount were 94.53, 5.45 and 0.02% respectively. 2) The total amount, amounts of bacteria, actinomyces and filamentous fungi and their percentages in total amount were different with plots, which are related to the organic matter content, N content and polluted degree, therefore, the amount character can be regarded as one of biological indexes in environmental monitor. 3) Soil salinity influenced the amounts of actinomyces and filamentous fungi, and actinomyces grew well and showed more colony amounts when cultured in low salinity. The high salinity might be one of reasons for the fewer amounts of filamentous fungi.
出处
《台湾海峡》
CAS
CSCD
2000年第1期54-59,共6页
Journal of Oceanography In Taiwan Strait
基金
国家自然科学基金资助项目!(396 70 135号 )
关键词
滩涂土壤
细菌
放线菌
数量特征
微生物
Mudflat soil, bacteria, actinomyces, filamentous fungi, amount character
