摘要
探讨了鱼类生物完整性评价指标(F-IBI)的研究进展及其在河流健康管理中的应用适用性,构建了长江中上游地区F-IBI评价指标体系,并用该指标对长江中游浅水湖泊和上游三峡库区的生物完整性演变趋势做了评价。结果表明,长江流域多年来(1964～1998,1997～2002,2003～2008,2010)鱼类生物完整性呈明显下降趋势。中游浅水湖泊中,受人类干扰较大的湖泊或者年份的F-IBI得分较低。在三峡库区江段,从坝前到库尾,F-IBI值呈现递增趋势,同时,支流江段的健康状况明显优于库区干流水域。总体而言,各个江段的生物完整性等级均为差。上述案例中生物完整性的时空变化趋势与其他研究的评价结果互为补充验证。
The research progress of fish index of biotic integrity（F-IBI） and its applicability in river health management are discussed.The establishment of the evaluation system by F-IBI for the middle and upper Yangtze River is established and the evolution tendencies of species integrity in shallow lakes of middle Yangtze River and in the Three Gorges Reservoir area are evaluated.The evaluation results show that the biotic integrity of fishes for years（1964~1998,1997~2002,2003~2008,2010） in the basin has an obvious downward trend.The F-IBI values of the shallow lakes influenced obviously by human activities are lower,including those seriously affected by the activities in some years;in the river reach of Three Gorges Reservoir area,F-IBI values increase from the dam site to the reservoir tail,the health situation of the tributaries is better than that of the main stem.In general,the grade of biotic integrity of various river reaches of Yangtze River is poorer.The temporal and spatial variation tendency of biotic integrity given is mutually verified with other water environmental quality evaluation results of Yangtze River.
出处
《人民长江》
北大核心
2013年第15期65-68,共4页
Yangtze River
基金
“十二五”国家科技支撑计划课题“三峡库区及长江中游生态系统结构与功能完善关键技术研究与示范”(2012BAC06B04)
