水生生物学报2017，Vol.41Issue(1)：228-237,10.DOI:10.7541/2017.29
基于附石藻类生物完整性指数对汝溪河水生态系统健康的评价
USING EPILITHIC ALGAE ASSEMBLAGES TO ASSESS STREAM HEATH OF THE RUXI RIVER, CHINA
摘要
Abstract
The present study investigated the community structure of epilithic algae and characteristics of environmen-tal factors among 9 sample sites in Ruxi River, a tributary of the Three Gorges Reservoir. The health of freshwater eco-system in the stream conditions of Ruxi River was assessed via Index of Biological Integrity (IBI). The results indi-cated that there were significant spatial and temporal differences in the epilithic algae community structure in Ruxi River and conductivity, dissolved oxygen, nitrate nitrogen and turbidity were the major environmental factors in Ruxi River. IBI result showed that the upstream area of Ruxi River were in excellent biological integrity, while the mid-stream and downstream area were in severe impairment. The biological integrity in dry season was preferable to the normal. Thus, the biological integrity in natural stream of Ruxi River showed a general level, suggesting that a sub-health aquatic ecosystem was found in Ruxi River.关键词
附石藻类/生物完整性指数/群落结构/水生态系统/健康评价Key words
Epilithic algae/Biotic integrity assessment index/Community structure/River ecosystem/Health assessment分类
生物科学引用本文复制引用
杨燕君,徐沙,刘瑞,许金铸,施军琼,吴忠兴..基于附石藻类生物完整性指数对汝溪河水生态系统健康的评价[J].水生生物学报,2017,41(1):228-237,10.基金项目
国家自然科学基金项目(31170372)资助[Supported by National Natural Science Foundation of China (31170372) （31170372）
