嘉陵江小三峡硅藻群落结构及水环境

生态学杂志

嘉陵江小三峡硅藻群落结构及水环境

陈锋;邓洪平;王明书;刘长坤

西南大学生命科学学院三峡库区生态环境教育部重点实验室，重庆 400715

收稿日期:2008-08-17 修回日期:1900-01-01 出版日期:2009-04-10 发布日期:2009-04-10

Community structure and water environment of diatom in Small Three Gorges of Jialing River.

CHEN Feng;DENG Hong-ping;WANG Min-shu;LIU Chang-kun

Key Laboratory of Eco-Environments in Three Gorges Reservoir Region (MOE), School of Life Science, Southwest University, Chongqing 400715, China

Received:2008-08-17 Revised:1900-01-01 Online:2009-04-10 Published:2009-04-10

摘要/Abstract

摘要： 为了研究嘉陵江小三峡硅藻群落结构及水质状况，按枯水期（2006年11月—2007年3月）、平水期（2007年4—6月）和丰水期（2007年7—9月）分别采集6个样点的硅藻样品，分析其物种组成、细胞密度、多样性和均匀度指数及硅藻商等，并结合理化指标对水质进行评价。结果表明：嘉陵江小三峡共有硅藻78种（含变种和变型），隶属2纲、10科、20属;硅藻细胞密度为0.53×10⁴～3.58×10⁴ ind·L^-1，总平均1.55×10⁴ ind·L^-1;多样性指数值（H′）为1.62～2.96，总平均2.33;均匀度指数值（E）为0.28～0.56，总平均0.42;嘉陵江小三峡水质总体上属β-中污水体，沙溪、北温泉水质较好，属微污水体，碚石、牛石沱水质次之，为β-中污水体，盐井、毛背沱水质最差，为α-中污水体。

关键词: 固相微萃取, 美洲斑潜蝇, 挥发性有机物, 田间诱捕试验

Abstract: To study the diatom community structure and water quality in Small Three Gorges of Jialing River, diatom samples were collected at six sampling sites in dry season (November 2006-March 2007), level season (April-June 2007), and rainy season (July-September 2007). The species composition, cell density, diversity, and evenness index were analyzed, and the water quality was evaluated. A total of 78 species belonging to 2 classes, 10 families and 20 genera were recorded. Cell density was 053×104〖KG-*2〗-〖KG-*7〗358×104 ind·L-1, with a mean value of 155×104 ind·L-1; species diversity index was 162〖KG-*2〗-〖KG-*7〗296, with a mean value of 233; and evenness index was 028〖KG-*2〗-〖KG-*7〗056, with a mean value of 042. On the whole, the water quality of Small Three Gorges belonged to β-mesosaprobic. Shaxi stream and North hot spring had better water quality, belonging to oligosaprobid, followed by Beishi and Niushituo, belonging to β-mesosaprobic, and Yanjing and Maobeituo, belonging to α-mesosaprobic.

Key words: Solid phase microextraction, Liriomyza sativae, Volatile organic compounds, Field trapping trials

陈锋;邓洪平;王明书;刘长坤. 嘉陵江小三峡硅藻群落结构及水环境[J]. 生态学杂志.

CHEN Feng;DENG Hong-ping;WANG Min-shu;LIU Chang-kun. Community structure and water environment of diatom in Small Three Gorges of Jialing River.[J]. cje.

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