【摘要】 本文报告了1985年7月在重庆大足龙水湖调查采集藻类植物的情况.经过鉴定的种和变种(含变型)共有190个,分别属于58属、29科、5门.报告分析了龙水湖的藻类区系,着重对其种类成分和数量分布进行了初步探讨.结果表明,龙水湖的藻类区系中,以硅藻为最多(占总数的52.63%),其次是绿藻(其中鼓藻类又多于绿球藻类),而且常见的种类大多数是微污水带和乙型中污水带的浮游植物.因此,可以肯定龙水湖是目前污染较轻、富营养化程度不高的水库.最后,作者在报告中建议今后应加强龙水湖库区的环境保护和注意水体污染监测工作.更多还原

【Abstract】 This paper presents the algae investigated and collected in Longshui Lake of Dazu county, Chongqing, Sichuan, during July. 1985. The total number ofr species and varieties (including forms) examined from these algal specimens is 190 belonging to 58 genera, 29 families, 16 orders, 7 classes and 5 divisions.In this paper, we analyse the algal flora of Longshui Lake, and deal with their elements and their quantitative distributions emphatically. The results show that in the algal flora of Longshui Lake, Bacillariophyta is the most predominant group, being 52.63% of the total species, and. next come Chlorophyta (31.58%), Cyauophyta (10.53%), and Pyrrophyta and Euglenophyta (each only 2.63%. Furthermore, most of the algae commonly found in Longshui Lake are phytoplanktons belonging to qligosaprobic and β-mesosaprobic zones. Hence it follows that Longshui Lake may be recognized as a slightly polluted reservoir in which the degrees of eutrophication are lower now. Considering that there are some factors of higher eutrophication and artificial pollution in Longshui Lake, we suggest that environmental protection ofLongshui Lake area should be streagtheasd and care should be taken to monitor water pollution in this area for the future.更多还原