| 重庆大洪湖氮、磷周年变动与浮游生物多样性 |
| Studies on Plankton Biodiversity and the Annual Changes of Nitrogen and Phosphorus Concentration in Lake Dahonghu,Chongqing Municipality |
| 投稿时间：2009-07-03 修订日期：2010-04-11 |
| DOI： |
| 中文关键词:大洪湖 浮游生物 氮 磷 |
| 英文关键词:Dahonghu Lake Plankton N P |
| 基金项目: |
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| 中文摘要: |
| ２００８年３月～２００９年１月，对大洪湖上、中、下游３个点的浮游生物组成和生物量以及氮、磷含量进行了２月１次的监测。水质检测数据显示大洪湖水体水质在Ⅳ类～Ⅴ类；富营养化程度较为严重，主要富营养化物质是氮，氮的富营养化评价指数冬季高于夏季。大洪湖的氮、磷等富营养化物质主要来源于上游水源，网箱养鱼产生的沉积物对大洪湖下游水体中的磷含量有较大的贡献，夏季和冬季分别占下游水体总磷量的８７．２％和６２．５％。目前，大洪湖实施的生态渔业具有一定的生态环保功能。大洪湖的水体自净作用使水体中的总氮下降了２７．９％～５９．２％，总磷下降了１０．０％ ～５６．９％，浮游植物的生物多样性指数也有所提高。 |
| 英文摘要: |
| Monitoring on plankton，Nitrogen and Phosphorus was conducted for the upstream，midstream，and downstream once two months in Dahonghu Lake from March in 2008 to January in 2009. As it was revealed in the investigation Batas of the water quality in Dahonghu Lake，the eutrophication degree was rather serious，which was higher in winter than that in summer, and fluctuated between class Ⅳand class V .The main eutrophication substance was Nitrogen. The sediment produced by cage-culture did a greater contribution to the Phosphorus concentration in the downstream of Dahonghu Lake，and accounted for 87.2% of the TP in summer and 62.5% in winter respectively. The Eutrophication substances，such as N and P, were mainly from the upstream. At present，the sell-purification of the Dahonghu Lake had effectively declined the concentration of TN and TP，27 . 9%-59.2% for TN and 10. 0%-56.9 % for TP , while the phytoplankton biodiversity was enhanced，indicating that the eco-fisheries in Dahonghu Lake met the requirements of eco-friendly features.
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| 钟诗群,徐黎明,陆 军,周恒芝,程光杰,武小宁.2010.重庆大洪湖氮、磷周年变动与浮游生物多样性[J].水生态学杂志,31(4):55-59. |
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