| 引用本文: | 叶琳琳,吴晓东,赵冬悦,周芮,唐旭廉,朱倩雯,张繁宇,刘波,闫德智.崇明岛河网浮游植物和无机、有机氮的时空分布特征.湖泊科学,2016,28(3):528-536. DOI:10.18307/2016.0308 |
| YE Linlin,WU Xiaodong,ZHAO Dongyue,ZHOU Rui,TANG Xulian,ZHU Qianwen,ZHANG Fanyu,LIU Bo,YAN Dezhi.Temporal and spatial distributions of phytoplankton and inorganic and organic nitrogen in Chongming Island. J. Lake Sci.2016,28(3):528-536. DOI:10.18307/2016.0308 |
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| 崇明岛河网浮游植物和无机、有机氮的时空分布特征 |
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叶琳琳1,2, 吴晓东3, 赵冬悦2, 周芮2, 唐旭廉2, 朱倩雯2, 张繁宇2, 刘波2, 闫德智2
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1.南通大学地理科学学院, 南通 226000;2.华东师范大学, 河口海岸学国家重点实验室, 上海 200062;3.中国科学院寒区旱区环境与工程研究所, 冰冻圈科学国家重点实验室, 青藏高原冰冻圈观测研究站, 兰州 730000
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| 摘要: |
| 为研究崇明岛河网浮游植物和无机、有机氮的时空分布特征及其相互关系,于2014年1、4、7和10月在崇明岛河网内选取界河、堡镇港、八滧港3条河道9个采样点采集浮游植物和表层水样,并选取崇西水闸作为对照点进行研究.结果表明:河网内浮游植物以绿藻和硅藻为主,其中水闸和堡镇港夏季裸藻生物量所占比例超过50%.八滧港总溶解性氮(TDN)的主要组分是溶解性无机氮,而水闸、界河和堡镇港溶解性有机氮(DON)在TDN中的比例在夏、秋季低于冬、春季,农田土壤释放可能是DON的重要来源.水温、溶解氧和化学需氧量是影响铵态氮浓度变化的重要环境因素.此外,通过冗余分析发现,铵态氮影响绿藻和裸藻分布,尿素影响甲藻分布. |
| 关键词: 崇明岛 浮游植物 无机氮 有机氮 时空分布 |
| DOI：10.18307/2016.0308 |
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| 基金项目:国家自然科学基金项目(41201076,41001032)和河口海岸学国家重点实验室开放基金项目(SKLEC-KF201310)联合资助. |
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| Temporal and spatial distributions of phytoplankton and inorganic and organic nitrogen in Chongming Island |
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YE Linlin1,2, WU Xiaodong3, ZHAO Dongyue2, ZHOU Rui2, TANG Xulian2, ZHU Qianwen2, ZHANG Fanyu2, LIU Bo2, YAN Dezhi2
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1.School of Geography Science, Nantong University, Nantong 226000, P. R. China;2.State Key Laboratory of Estuarine and Coastal Research, East China Normal University, Shanghai 200062, P. R. China;3.Cryosphere Research Station on the Qinghai-Tibetan Plateau, State Key Laboratory of Cryospheric Sciences, Cold and Arid Regions Environmental and Engineering Research Institute, Chinese Academy of Sciences, Lanzhou 730000, P. R. China
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| Abstract: |
| To investigate the temporal and spatial distributions of phytoplankton, inorganic and organic nitrogen as well as their relationship, the phytoplankton and surface water samples were collected at nine sites in Rivers Jiehe, Baozhengang, and Bayaogang in Chongming Island in January, April, July and October of 2014, a sample in Chongxi gate site was also collected as control. These results indicated that the phytoplankton community was composed by chlorophyta and bacillariophyta, and the contribution of euglenophyta biomass was more than 50% in the Chongxi gate and River Baozhengang in summer. Dissolved inorganic nitrogen(DIN) constituted the major fraction of total dissolved nitrogen(TDN), and the percentages of dissolved organic nitrogen(DON) in TDN in the Chongxi gate, Rivers Jiehe and Baozhengang were lower in summer and autumn than those in winter and spring, the release from agriculture soil may be an important source of DON. The concentration of ammonium nitrogen was affected by water temperature, dissolved oxygen, and chemical oxygen demand. The redundancy analysis suggested that the distribution of Chlorophyta and Euglenophyta was affected by ammonium nitrogen, and the distribution of Pyrrophyta was affected by urea. |
| Key words: Chongming Island phytoplankton inorganic nitrogen organic nitrogen temporal and spatial distributions |
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