| 引用本文: | 王金庆,宋祥甫,刘福兴,邹国燕,付子轼,刘长娥,刘娅琴,潘琦,孙作登.太湖流域直湖港支流龙延河水系鱼类集群现状.湖泊科学,2011,23(6):982-990. DOI:10.18307/2011.0623 |
| WANG Jinqing,SONG Xiangfu,LIU Fuxing,ZOU Guoyan,FU Zishi,LIU Chang'e,LIU Yaqin,PAN Qi,SUN Zuodeng.Fish assemblage status in Longyanhe river system, tributary of Zhihugang, Taihu Basin. J. Lake Sci.2011,23(6):982-990. DOI:10.18307/2011.0623 |
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| 摘要: |
| 分别于2009年8月和2010年5月对直湖港支流龙延河水系的鱼类集群现状及其影响因素进行研究.结果表明, 研究区域有多种鱼类存在, 共采集到31种, 隶属于5目9科22属;春、夏两季鱼类集群的种类数没有明显差异, 但春季的鱼类多度和生物量均显著高于夏季;主干支流、次级支流和支流末端等不同区位的鱼类组成也有一定差异;水体透明度、溶解氧与鲫、圆尾斗鱼、叉尾斗鱼多度显著正相关, 而氮、磷等营养盐浓度与似鳊、餐条、鲫鱼等种类的多度呈负相关;水体营养盐浓度过高及相应的溶解氧、透明度降低均对鱼类群落产生了不利影响。 |
| 关键词: 直湖港 龙延河 闸控入湖河流 鱼类集群 河道级别 水体污染 太湖流域 |
| DOI：10.18307/2011.0623 |
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| 基金项目:国家水体污染控制与治理科技重大专项项目(2008ZX07101-005);国家自然科学基金项目(30821140542)联合资助 |
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| Fish assemblage status in Longyanhe river system, tributary of Zhihugang, Taihu Basin |
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WANG Jinqing, SONG Xiangfu, LIU Fuxing, ZOU Guoyan, FU Zishi, LIU Chang'e, LIU Yaqin, PAN Qi, SUN Zuodeng
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Shanghai Academy of Agricultural Sciences, Shanghai 201403, P.R.China
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| Abstract: |
| In order to evaluate fish resource status in Zhihugang, gate-controlled inflow river of Lake Taihu, fish assemblage status in Longyanhe river system, main tributary of Zhihugang and their influencing factors were studied in August 2009 and May 2010 re-spectively.Results showed that a wide variety of fish species existed in the study area, and thirty two species of fish were collected, which belong to 22 genera, 27 families and 5 orders.Species numbers of fish assemblages in spring and summer had not obvious difference;however, fish abundance and biomass in spring were both significantly higher than those in summer;species composi-tion of fish assemblages in different locations, that is, main tributary, secondary tributary and tributary end, varied as well.Water transparency and dissolved oxygen content were positively correlated with abundances of Carassius auratus, Macropodus ocellatus and Macropodus opercularis, Water nutrient concentrations, i.e., nitrogen and phosphorus, were negatively related to fish abun-dances of Pseudobrama simoni, Hemicculter leuciclus and Carassius auratus.Excess nutrient concentration and corresponding low water transparency and dissolved oxygen content produced an adverse effect on fish assemblage structure and species composition. |
| Key words: Zhihugang Longyanhe gate-controlled inflow river fish assemblages channel order water pollution Taihu Basin |
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