| 三峡水库干流底栖硅藻群落组成及其与环境因子的关系 |
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| 引用本文： | 刘黎,贺新宇,付君珂,杨燕君,米文梅,施军琼,吴忠兴.三峡水库干流底栖硅藻群落组成及其与环境因子的关系[J].环境科学,2019,40(8):3577-3587. |
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| 作者姓名： | 刘黎 贺新宇 付君珂 杨燕君 米文梅 施军琼 吴忠兴 |
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| 作者单位： | 西南大学三峡库区生态环境教育部重点实验室, 重庆市三峡库区植物生态与资源重点实验室, 重庆 400715;西南大学三峡库区生态环境教育部重点实验室, 重庆市三峡库区植物生态与资源重点实验室, 重庆 400715;西南大学三峡库区生态环境教育部重点实验室, 重庆市三峡库区植物生态与资源重点实验室, 重庆 400715;西南大学三峡库区生态环境教育部重点实验室, 重庆市三峡库区植物生态与资源重点实验室, 重庆 400715;西南大学三峡库区生态环境教育部重点实验室, 重庆市三峡库区植物生态与资源重点实验室, 重庆 400715;西南大学三峡库区生态环境教育部重点实验室, 重庆市三峡库区植物生态与资源重点实验室, 重庆 400715;西南大学三峡库区生态环境教育部重点实验室, 重庆市三峡库区植物生态与资源重点实验室, 重庆 400715 |
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| 基金项目： | 国家自然科学基金项目（41877410）；中央高校基本科研业务费专项（XDJK2017B010） |
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| 摘 要： | 为了解三峡水库长江干流不同水文期底栖硅藻群落变化及其与环境因子的关系,分别于非蓄水期(2015年7～9月)和蓄水期(2015年12月～2016年3月)对干流32个样点进行底栖硅藻采集和分析.结果表明,蓄水期与非蓄水期在水温(WT)、水下光强(PAR)、p H、电导率(Spc)、溶解氧(DO)、氧化还原电位(ORP)、浊度(Tur)、透明度(SD)、流速(v)和高锰酸盐指数具有显著性差异. 2个水情期共鉴定出底栖硅藻96种,隶属28属,非蓄水期鉴定出13种优势种,蓄水期鉴定出3种,且2个时期优势种在组成和分布上存在一定的差异,但α-中污染性、富营养化的种类变异直链藻(Melosira varians)为两个时期的绝对优势种.通过冗余分析(RDA)发现,非蓄水期显著影响长江干流底栖硅藻群落组成的环境因子是pH、流速和正磷酸盐,且上、下游样点存在明显分区;而蓄水期影响底栖硅藻群落的主要环境因子是水温、浊度、高锰酸盐指数和溶解氧,上、下游样点分区不明显.这些结果表明三峡库区蓄水对底栖硅藻群落组成具有重要影响,导致群落结构发生变化.
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| 关 键 词： | 底栖硅藻 群落 环境因子 长江干流 三峡库区 |
| 收稿时间： | 2019/1/3 0:00:00 |
| 修稿时间： | 2019/3/15 0:00:00 |
Benthic Diatom Communities in the Main Stream of Three Gorges Reservoir Area and Its Relationship with Environmental Factors |
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| LIU Li,HE Xin-yu,FU Jun-ke,YANG Yan-jun,MI Wen-mei,SHI Jun-qiong and WU Zhong-xing.Benthic Diatom Communities in the Main Stream of Three Gorges Reservoir Area and Its Relationship with Environmental Factors[J].Chinese Journal of Environmental Science,2019,40(8):3577-3587. |
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| Authors: | LIU Li HE Xin-yu FU Jun-ke YANG Yan-jun MI Wen-mei SHI Jun-qiong and WU Zhong-xing |
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| Institution: | Key Laboratory of Eco-environments in Three Gorges Reservoir Region(Ministry of Education), Chongqing Key Laboratory of Plant Ecology and Resources Research in Three Gorges Reservoir Region, Southwest University, Chongqing 400715, China,Key Laboratory of Eco-environments in Three Gorges Reservoir Region(Ministry of Education), Chongqing Key Laboratory of Plant Ecology and Resources Research in Three Gorges Reservoir Region, Southwest University, Chongqing 400715, China,Key Laboratory of Eco-environments in Three Gorges Reservoir Region(Ministry of Education), Chongqing Key Laboratory of Plant Ecology and Resources Research in Three Gorges Reservoir Region, Southwest University, Chongqing 400715, China,Key Laboratory of Eco-environments in Three Gorges Reservoir Region(Ministry of Education), Chongqing Key Laboratory of Plant Ecology and Resources Research in Three Gorges Reservoir Region, Southwest University, Chongqing 400715, China,Key Laboratory of Eco-environments in Three Gorges Reservoir Region(Ministry of Education), Chongqing Key Laboratory of Plant Ecology and Resources Research in Three Gorges Reservoir Region, Southwest University, Chongqing 400715, China,Key Laboratory of Eco-environments in Three Gorges Reservoir Region(Ministry of Education), Chongqing Key Laboratory of Plant Ecology and Resources Research in Three Gorges Reservoir Region, Southwest University, Chongqing 400715, China and Key Laboratory of Eco-environments in Three Gorges Reservoir Region(Ministry of Education), Chongqing Key Laboratory of Plant Ecology and Resources Research in Three Gorges Reservoir Region, Southwest University, Chongqing 400715, China |
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| Abstract: | |
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| Keywords: | benthic diatom community composition environmental factors main stream of Yangtze River Three Gorges Reservoir |
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