摘要
针对桂林漓江断流、生态蜕变、洪涝灾害等问题,从1973年始,有关部门对漓江水域生态系统进行保护与修复,并进行一系列调查研究工作。漓江处于广西东北部喀斯特地形发育最典型的地段,常见的浮游植物种类有颤藻、衣藻、小球藻、刚毛藻、水绵、水网藻、鼓藻、直链藻、舟形藻、卵形藻、针杆藻等,形成典型的河流型浮游植物群落。阐述并分析漓江第三次(2006年)水生生物自然资源调查浮游植物部分的成果。与1974、1982年两次调查相比,结果显示漓江浮游植物优势种群未发生变化,均为硅藻类,但浮游植物数量变化较大。本次调查浮游植物数量是1982年的1.81倍。
The investigation and analysis on the preservation and recovery of hydrobiological ecosystem in Lijiang river have been advanced by the competent department since 1973 in connection with the problems of interception, ecological disintegration and flood disaster in the river. Herein described is the investigation result about phytoplankton of the third investigation （2006） on natural hydrobiological resources in Lijiang river. Lijiang river is situated at the representative Karst relief of northeastern Guangxi. The common genera of Algae were Oscillatoria, Chlamydomonas, Chlorella, Cladophora, Spirogyra , Hydrodictyon , Cosmarium , Melosira , Navicula , Cocconeis , Synedra , which formed the typical free- floating communities in the river. Compared with the previous investigation ,the result suggested that the dominant species of phytoplankton in Lijiang river remained the invariable phylum as Bacillariophyta, while the amount of phytoplankton varied widely. The amount of phytoplankton for this investigation is 1.81 times to that in 1982.
出处
《广西师范大学学报（自然科学版）》
CAS
北大核心
2009年第2期124-129,共6页
Journal of Guangxi Normal University:Natural Science Edition
基金
国家水利部现代科技创新项目(XDS2006-01)
广西科技厅攻关项目(0632006-3A)
广西水利"十一五"重点科技项目
关键词
漓江
浮游植物
藻类
多样性
Lijiang river
Phytoplankton
Algae
diversity
