| 摘要: |
| 根据2013 年4 月(春季)和9 月(秋季)2 个航次调查数据, 对台山核电邻近海域浮游植物种类组成、时空分布及多样性指数等群落特征进行了分析。共鉴定浮游植物3 门61 种, 其中硅藻类48 种, 占78.69%; 甲藻类11 种, 占18.03%; 金藻类2 种, 占3.28%。种类组成以暖水种和广温种为主。浮游植物丰度均值春季(11.78×107个/m3)与秋季(29.37×107个/m3)无明显差异; 然而丰度水平变化较大, 整体表现为春秋两季核电站温排水口附近站位均低于远离站位。春秋两季浮游植物优势种共出现了7 种, 春季仅出现了中肋骨条藻Skeletonema costatum1 种, 优势度高达0.996; 秋季出现了7 种, 包括中肋骨条藻(0.291)、柔弱拟菱形藻Pseudo-nitzschia delicatissima(0.222)、拟弯角毛藻Chaetoceros pseudocurvisetus(0.214)和并基角毛藻Chaetoceros decipiens(0.056)等。海域春季Shannon-Wiener 多样性指数H′、Pielou 均匀度指数J′和Margalef 物种丰富度指数D均值分别为0.55、0.18 和0.50; 秋季分别为2.80、0.62 和0.80。多样性指数显示台山核电附近海域水质状态受到了一定程度的污染。 |
| 关键词: 浮游植物 群落结构 生物多样性 核电厂 台山 |
| DOI：10.11759/hykx20150626001 |
| 分类号: |
| 基金项目:农业部财政专项(20141005); 公益性行业(农业)科研专项(201403008) |
|
| Characteristics of the phytoplankton community in spring and autumn in the sea area around the Taishan Nuclear Power Plant, China |
|
SU Li,HUANG Zi-rong,XU Shan-nan,CHEN Zuo-zhi
|
| Abstract: |
| On the basis of the data from two phytoplankton surveys conducted in April 2013 and September 2013 in the Taishan Sea, the species composition, spatial and temporal distribution, and diversity of phytoplankton were analyzed. A total of 61 phytoplankton species were identified belonging to three phyla. Forty-eight species of Bacillariophyta, 11 species of Pyrrophyta, and 2 species of Chrysophyta accounted for 78.69%, 18.03%, and 3.28% of the total species, respectively. The abundance of phytoplankton was not significantly different between spring and autumn. The abundance of phytoplankton differed between stations within the two seasons, indicating that phytoplankton abundance in the neighboring draining water stations was less than in distant stations. In this area, 7 kinds of dominant species appeared in total and only 1 species appeared in spring, with a predominance of 0.996. However, 7 dominant species appeared in autumn, including Skeletonema costatum, Pseudo-nitzschia delicatissima, Chaetoceros pseudocurvisetus, and Chaetoceros decipiens. The Shannon–Wiener diversity index H′, Pielou evenness index J′, and Margalef richness index D were 0.55, 0.18, and 0.50, respectively, in spring and were 2.80, 0.62, and 0.80, respectively, in autumn. All indexes demonstrated that the water adjacent to the Taishan Nuclear Power Plant is contaminated. |
| Key words: phytoplankton community structure biodiversity nuclear power plant Taishan |
