| 鸭绿江下游浮游植物群落结构与环境因子的关系* |
| The relationship between structure of phytoplankton community and environment factors in lower reaches of Yalu river |
| 投稿时间：2016-12-21 修订日期：2018-07-23 |
| DOI：10.15928/j.1674-3075.2018.04.010 |
| 中文关键词:鸭绿江下游 浮游植物 环境因子 |
| 英文关键词:lower reaches of Yalu River, phytoplankton, community structure |
| 基金项目:农业部渔业环境监测中心《辽河、双台子河及鸭绿江下游重要渔业水域渔业生态环境监测》项目 |
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| 中文摘要: |
| 为了掌握鸭绿江下游浮游植物群落的演替规律及与环境因子的关系，于2012年至2016年对鸭绿江下游进行连续5年的采样调查。鉴定出浮游植物种类共77种，分属于7门，47属，其中硅藻门30种，绿藻门28种，裸藻门6种，甲藻门3种，金藻门2种，隐藻门1种，群落组成以硅藻和绿藻为主。主要优势种有梅尼小环藻（Cyclotella meneghiniana）、颗粒直链藻（Melosira granulata）、克罗顿脆杆藻（Fragilaria crotonensis）、辐射圆筛藻（Coscinodiscus radiatus）和美丽星杆藻（Asterionella formosa）。浮游植物生物量从上游至下游逐渐升高，年际变化为2012年至2014年生物量较高，从2015年开始生物量骤减。影响浮游植物生物量最主要的环境因子是水温、透明度和总氮，生物量与水温、总氮呈极显著正相关（P<0.01），与透明度呈显著负相关（P<0.05）。 |
| 英文摘要: |
| In order to get the rule of succession of phytoplankton community and its relationship with environment factors in lower reaches of Yalu river, phytoplankton and environmental factors were monitored in five years, from 2012 to 2016. A total of 77 phytoplankton species were identified, which belonged to 7 genera and 47 phyla，among them there were 30 species of Bacillariophyta, 28 species of Chlorophyta, 6 species of Euglenophyta, 3 species of Pyrrophyta, 2 species of Chrysophyta, 1 of species Cryptophyta. the community structure of phytoplankton mainly belonged to Bacillariophyta and Chlorophyta. The main dominant species were Cyclotella meneghiniana, Melosira granulata, Fragilaria crotonensis, Coscinodiscus radiatus, Asterionella formosa. The biomass of phytoplankton increased gradually from upstream to downstream, it was high from the year of 2012 to 2014 and decreased sharply from the of 2015. The most important environment factors which inpluenced biomass of phytoplankton were water temperature, transparency and TN. The biomass of phytoplankton was extremely significant positive correlations with water temperature and TN（P<0.01）, and was significant negative correlations with transparency（P<0.05）. |
| 魏洪祥,王兴兵,寇凌霄,石俊艳,王晓光,肖祖国,宣明春,刘勇.2018.鸭绿江下游浮游植物群落结构与环境因子的关系*[J].水生态学杂志,39(4):73-78. |
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