投饵养鱼对潘家口水库水质影响围隔试验Ⅱ：磷素  

Enclosure experimental research with fish culturing in the Panjiakou ReservoirⅡ.Effects of fish food and fish species on phosphorus flux

作　　者：吴敏[1,2,3] 黄岁樑[1,2,3] 臧常娟[1,2,3] 杜胜蓝[1,2,3] 

机构地区：[1]南开大学环境污染过程与基准教育部重点实验室,天津300071 [2]南开大学环境科学与工程学院,天津300071 [3]南开大学天津市城市生态环境修复与污染防治重点实验室,天津300071

出　　处：《水利学报》2013年第10期1204-1209,共6页Journal of Hydraulic Engineering

基　　金：国家自然科学基金资助项目(51079068);天津市科技支撑项目(09ZCGYSF00400);水利部公益性行业科研专项课题(200801135);中国水利水电科学研究院开放基金资助

摘　　要：前文讨论了投饵养鱼对潘家口水库水体中氮素的影响，本文进一步阐述围隔试验中，投饵养鱼对磷素的影响。结果表明，潘家口水库是典型的“磷限制”型水体，总氮和总磷质量浓度比高达112，投饵养鱼极大降低了水体中氮磷质量浓度比，试验结束时投饵养鱼围隔氮磷质量浓度比介于2．60～5．63；试验期间，投饵围隔中总磷、溶解性总磷和溶解性正磷酸盐质量浓度随时间变化一致，其质量浓度高低排序相同：投饵〉投饵单养花鲢〉投饵混养花鲢和鲤鱼〉投饵单养鲤鱼，除投饵单养鲤鱼围隔，其余围隔中各形态磷质量浓度均显著高于对照围隔和水库水体。然而，颗粒态磷质量浓度顺序为：投饵〉投饵单养鲤鱼〉投饵混养花鲢和鲤鱼〉投饵单养花鲢。假定单位质量鱼肉含磷量不随鱼体生长而改变，则捕捞可去除的磷素量分别是92．4mg（2#）、995．5mg（3#）和714．7mg（4#），分别占投放鱼饵总磷的0．5％、4．1％和3．1％。This is the second part of this series. In the previous paper, nitrogen flux influenced by cultur ing fish with fish food was discussed in detail. In this paper, phosphorus flux was elucidated as well. The results indicate that the Panjiakou reservoir is a typical ＂phosphoruslimitation＂ water body, and the con centration ratio for nitrogen and phosphorus is 112, while addition fish food for fish culturing drastically de crease the ratio to 2.60-5.63. During running period, total phosphorus, total dissolved phosphorus and ortho phosphate concentrations showed the same tendency in fish food presented enclosures, and were higher than that in control enclosure and reservoir water except the carp culturing enclosure. The rank order for to tal phosphorus, total dissolved phosphorus and orthophosphate concentrations were as follows： adding fish food only （1#） 〉 feeding bighead carp （2#） 〉 feeding both bighead carp and carp （4#） 〉 feeding carp （3#）. However, the rank order for the particle phosphorus concentration was adding fish food only （1#） 〉 feeding carp （3#） 〉 feeding both bighead carp and carp （4#） 〉 feeding bighead carp （2#）. Assumed that the phosphorus content per gram fish was constant with the fish growing, phosphorus removal by netting fish were 92.4mg （2#）, 995.5mg （3#） and 714.7mg （4#）, which accounted 0.5%, 4.1% and 3.1%, respec tively, for the phosphorus brought by fish food addition.

关 键 词：投饵 养鱼 潘家口水库 磷素 围隔试验 

分 类 号：X174[环境科学与工程—环境科学]