桂林漓江流域藻类生态分布与水质的相关性研究

STUDY ON THE RELATIONSHIP OF THE ALGAE DISTRIBUTION AND ECOLOGY ENVIRONMENT IN LIJIANG RIVER

定量研究漓江流域不同区段的藻类群落组成及生态分布,运用现代数学生态学方法,对定量数据进行聚合分类和排序,结果表明:漓江流域藻类中较普遍分布的分类群为黄藻门(Xanthophyta)的黄丝藻属(Tri-bonema)、角绿藻属(Goniochloris),绿藻门(Chlorophyta)的鼓藻属(Cosmarium)、水绵属(Spirogyra)、绿球藻属(Chlorocoum)、栅藻属(Scenedesmus)和硅藻门(Bacillariophyta)的舟形藻属(Navicula)、羽纹藻属(Pinnula-ria)、桥弯藻属(Cymbella)、脆杆藻属(Fragilaria)、针杆藻属(Synedra)等等.藻类群落分布与水体环境状态密切相关,群落组成能够反映水体质量.藻类的生长繁殖与环境表现为物种多样性和营养多样性成正相关关系.

The composition and ecological distribution of the algae communities in different zones in Lijiang river were quantitatively studied by modern mathematical ecology about hierarchical agglomerative classification and polar ordination.The results show:1.The algae of relatively universal distribution are Xanthophyta(Tribonema,Goniochloris),Chlorophyta(Cosmarium,Spirogyra,Chlorocoum,Scenedesmus),Bacillariophyta(Navicula,Pinnularia,Ymbella,Fragilaria,Synedra) plants and so on.2.The algae communities distribution is colsely related to the water environment.3.Composition of the algae communities may show water clean status,there are relatively fewer type and quantity of algae in the more clean water environment than in the rich organic water environment.The interaction between the growth and reproduction of algae and the water environment shows the positive proportion relation between the varieties of nutrition and species.