摘要
从2009年7月至10月(为期4个月)在河道中设置生态浮床,7月中旬和8月中旬分别测定各样点水质指标;9月中旬采用浮丝网、沉丝网、地笼组合方法进行鱼类取样,比较浮床区与上、下游样点间鱼类物种组成的差异。结果显示,7月份,浮床区水体总氮、总磷、氨氮含量和高锰酸钾指数显著低于上游和下游,8月份,浮床区水体总氮含量和高锰酸钾指数显著低于上游,浮床区总磷含量显著低于下游。鱼类总生物量表现为下游(775.3 g)>上游(755.3 g)>浮床区(297.8 g),总数量表现为下游(45尾)>上游(21尾)>浮床区(13尾)。上游以底层鱼类数量最高(61.9%),浮床区也是以底层鱼类数量最高(69.2%),下游区则是以中下层鱼类数量最高(68.9%)。
From July to October 2009,REFBs were deployed in the river channel and rice was planted in early July,and water quality indexes were investigated in mid-July and mid-August.The combined sampling method integrated floating net,sinking net with ground cage was used for fish sampling,and the differences of fish assemblage among sample points of the upstream,REFBs and downstream areas were compared in mid-September.Results showed that the water total nitrogen(TN),total phosphorus(TP),ammonia nitrogen(NH_(3)-N)contents and potassium permanganate index(COD_(Mn))in REFBs area were obviously lower than those of upstream and downstream in July.Water TN content and COD_(Mn) in REFBs area were significantly lower than those in the upstream area,and TP contents in REFBs area were significantly lower than those in the downstream area in August.The total fish biomass appeared as downstream(775.3g)>upstream(755.3g)>REFBs areas(297.8g),and the total fish quantity appeared as downstream(45 fish)>upstream(21 fish)>REFBs areas(13 fish).The upstream area had the highest quantity of bottom fish(61.9%),the REFBs area also had the highest quantity of bottom fish(69.2%),and the downstream area had the highest quantity of middle and lower fish(68.9%).
作者
王金庆
吕瑞敏
曾兰芳
于海瑞
封佳丽
刘长娥
付子轼
WANG Jin-qing;LU Rui-min;ZENG Lan-fang;YU Hairui;FENG Jia-li;LIU Chang-e;FU Zi-shi(School of Biology and Oceanography,Weifang University,Weifang 261061,China;Shanghai Academy of Agricultural Sciences,Shanghai 201043,China)
出处
《潍坊学院学报》
2022年第2期19-24,共6页
Journal of Weifang University
基金
科技部2015年度星火计划资助项目(2015GA680005)
上海市2013年度自然科学基金资助项目(13ZR1427300)
江苏省科技厅2017年度现代农业面上资助项目(BE2017350)
潍坊学院2021年度博士科研启动基金资助项目(44121014)。
关键词
生态浮床
鱼类
总氮
氨氮
总磷
高锰酸钾指数
栖息地功能
Ecological floating bed
Fish
Total nitrogen
Ammonia nitrogen
Total phosphorus
Potassium permanganate index
Habitat function
