摘要
198 6- 1 987年中国第三次南极考察中 ,对南极长城站空气、陆上和海滨的微生物作了考察。长城站野外空气中的微生物含量较低 ,海洋性微生物为 1 4 8.7CFU/ m3 ,陆源性微生物为 1 7.9CFU/ m3 ,表明野外空气相当洁净。室内空气微生物数比室外及野外均高得多 ,霉菌的检出率和含量都不高。微生物因人群活动和环境的不同而异。陆上的微生物含量次序是 :冰雪 <湖水 <原土等。海滨的微生物含量相当多 ,>1 0 3 CFU/ cm3 (或 g)。长城站的微生物组成有 1 1属以上 ,包括偶见的芽孢杆菌。温度试验结果表明 ,野外的大部分菌株适于低温生活。没有发现能在≥2 5℃的温度中存活者。低温是控制长城站微生物生态的一个重要因子。在长城站这类环境中 。
During the third CHARE in 1986/1987,microbes in outdoor and indoor air, ice, snow, lake water,virgin soil,offshore seawater and seaweeds were investigated. The results obtained indicate:there were relatively few microbes in the open air of the Great Wall Station, Antarctica, i.e. the quantity of marine microbes was about 148.7 CFU/m 3 and that of terrigenous microbes about 17.9CFU/m 3. Which indicated that the open air was quite clean. Contents of air-bore microbes indoors were much higher than those outdoors and in the field air.The detection rates and amount of mildew were not high. The amounts of air-borne microbes in different areas varied with human activi-ties and environmental parameters. The results presented here suggested tous that we should continuously improve the purity of indoor air in the Great Wall Station. The amounts of microbes from different sources in the Great Wall Station were arranged in order of magnitude, i.e. ice and snow<lake water<virgin soil. The content of microbes in the sea shore was considerable, i.e.about 10 3 CFU/cm 3 (or g). The microbes analysed consisted of more than 11 genera in which Bacillus was occasionally found. The result obtained from temperature test indicated that most of the bacterial strains from the open air were adapted to lower temperature. There were no strains capable of living at or over 25℃ as yet. Low temperature is one of the important factors controll ing microbial ecology in the Great Wall Station. In such an environment as the Great Wall Station, cryophiles play a persistent and important role in the transformation and circulation of materlals.
出处
《南极研究》
CSCD
1992年第4期7-13,共7页
关键词
微生物
属群分析
温度感应
考察
Great Wall Station,microbes in land,sea and air ,analysis of genera and groups of microbes,microbial response to temperature.
