| 西藏多格错仁盐湖表、底层浮游植物群落结构 |
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| 引用本文： | 崇瞞璇,贾沁贤,刘喜方,尹丽平,陈立婧. 西藏多格错仁盐湖表、底层浮游植物群落结构[J]. 上海海洋大学学报, 2018, 27(6): 875-883 |
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| 作者姓名： | 崇瞞璇 贾沁贤 刘喜方 尹丽平 陈立婧 |
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| 作者单位： | 上海海洋大学 水产科学国家级实验教学示范中心, 上海 201306;上海海洋大学 农业部淡水水产种质资源重点实验室, 上海 201306;上海海洋大学 水产动物遗传育种中心上海市协同创新中心, 上海 201306,中国地质科学院矿产资源研究所 国土资源部盐湖资源与环境重点实验室, 北京 100037,中国地质科学院矿产资源研究所 国土资源部盐湖资源与环境重点实验室, 北京 100037,上海海洋大学 水产科学国家级实验教学示范中心, 上海 201306;上海海洋大学 农业部淡水水产种质资源重点实验室, 上海 201306;上海海洋大学 水产动物遗传育种中心上海市协同创新中心, 上海 201306,上海海洋大学 水产科学国家级实验教学示范中心, 上海 201306;上海海洋大学 农业部淡水水产种质资源重点实验室, 上海 201306;上海海洋大学 水产动物遗传育种中心上海市协同创新中心, 上海 201306 |
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| 基金项目： | 上海高校知识服务平台水产动物遗传育种中心上海市协同创新中心项目（ZF1206）；国家自然科学基金（40573056）；中国地质调查局地质调查项目（DD20160330） |
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| 摘 要： | 2009年4月27日至5月6日对西藏多格错仁盐湖进行了58个站点的采样调查,对比分析了表、底层浮游植物种类组成、生物密度、生物量、多样性和不同经纬度浮游植物种类分布等的差异。结果显示:表层浮游植物121种,优势种为菱形藻未定种(Nitzschia sp.)和舟形藻未定种(Navicula sp.);底层189种,优势种为菱形藻未定种、舟形藻未定种、菱板藻未定种(Hantzschia sp.)和两尖菱板藻(H. amphioxys),均属硅藻门且该门的物种数占比均超过60%;表、底层物种为中等不相似。底层水体的浮游植物平均生物密度(68. 43×104个/L)和生物量(0. 819 8 mg/L)远远高于表层的生物密度(8. 44×104个/L)和生物量(0. 102 1 mg/L),但表层的浮游植物多样性指数值显著高于底层(P 0. 05)。聚类分析可知盐湖底层浮游植物群落结构比表层相对单一。
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| 关 键 词： | 多格错仁盐湖 浮游植物 群落结构 水平分布 垂直差异 |
| 收稿时间： | 2018-04-25 |
| 修稿时间： | 2018-06-07 |
Phytoplankton community structures in surface and bottom layers of the Dogai Coring Salt Lake,Northern Tibet |
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| CHONG Linxuan,JIA Qinxian,LIU Xifang,YIN Liping and CHEN Lijing. Phytoplankton community structures in surface and bottom layers of the Dogai Coring Salt Lake,Northern Tibet[J]. Journal of Shanghai Ocean University, 2018, 27(6): 875-883 |
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| Authors: | CHONG Linxuan JIA Qinxian LIU Xifang YIN Liping CHEN Lijing |
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| Affiliation: | National Demonstration Center for Experimental Fisheries Science Education, Shanghai Ocean University, Shanghai 201306, China;Key Laboratory ofFreshwater Aquatic Grenetic Resources, Ministry ofAgriculture, Shanghai Ocean University, Shanghai 201306, China;Shanghai Collaborative Innovation for Aquatic Animal Genetics and Breeding, Shanghai Ocean University, Shanghai 201306, China,Key Laboratory of Saline Lake Resources and Environments, Institute of Mineral Resources, CAGS MLR, Beijing 100037, China,Key Laboratory of Saline Lake Resources and Environments, Institute of Mineral Resources, CAGS MLR, Beijing 100037, China,National Demonstration Center for Experimental Fisheries Science Education, Shanghai Ocean University, Shanghai 201306, China;Key Laboratory ofFreshwater Aquatic Grenetic Resources, Ministry ofAgriculture, Shanghai Ocean University, Shanghai 201306, China;Shanghai Collaborative Innovation for Aquatic Animal Genetics and Breeding, Shanghai Ocean University, Shanghai 201306, China and National Demonstration Center for Experimental Fisheries Science Education, Shanghai Ocean University, Shanghai 201306, China;Key Laboratory ofFreshwater Aquatic Grenetic Resources, Ministry ofAgriculture, Shanghai Ocean University, Shanghai 201306, China;Shanghai Collaborative Innovation for Aquatic Animal Genetics and Breeding, Shanghai Ocean University, Shanghai 201306, China |
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| Abstract: | Investigations of phytoplankton community characteristics in the surface and bottom layers of the Dogai Coring Lake were conducted from April 27 to May 6 in 2009. Fifty-eight sampling stations covered the whole lake. Differences in phytoplankton species composition, density, biomass, diversity and distribution of different latitudes or longitudes in the surface and bottom layers of the Dogai Coring Lake were analyzed. The results showed that a total of 121 species of phytoplankton were identified in the surface layer,the dominant species are Nitzschia sp. and Navicula sp.; 189 species in the bottom layer, the dominant species are Nitzschia sp., Navicula sp., Hantzschia sp. and Hantzschia amphioxys. Bacillariophyta is dominant in species numbers by over 60%. The species between the surface and bottom layers are medium dissimilarity. Higher density (68.434×104 cell/L) and biomass (0.819 8 mg/L) of phytoplankton in the bottom layer than the density (8.444×104 cell/L) and biomass (0.102 1 mg/L) in the surface layer, but the phytoplankton diversity index in the bottom layer is lower than the surface. There was a significant difference between the surface layer and the bottom layer (P < 0.05). The results of cluster analysis revealed the structure in the bottom is more simple than that in the surface, but distribution on the different latitudes or longitudes is similar. |
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| Keywords: | Dogai Coring Salt Lake phytoplankton community characteristics horizontal distribution vertical differentiation |
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