赤水河赤水市河段的水质状况评价  

Water Quality in Chishui Reach of Chishui River

作　　者：王发鹏[1] 胡晓红[2] 陈椽[1] 

机构地区：[1]贵州师范大学生命科学学院,贵州贵阳550001 [2]贵州师范大学地理与环境科学学院,贵州贵阳550001

出　　处：《贵州农业科学》2015年第5期208-211,共4页Guizhou Agricultural Sciences

基　　金：国家重点基础研究发展计划973前期项目"矿产资源与生态环境演变相关科学问题研究"(2012CB426506);贵州省科学技术基金项目"贵州大中型供水水库水体富营养化现状调查及防治对策研究"[黔科合SY(2010)3012]

摘　　要：为赤水河赤水市河段的生态保护提供科学数据,通过设置不同代表性采样断面（采样点）,对赤水河赤水市河段的着生藻类的种类组成等生物学指标进行采样调查与分析。结果表明：共鉴定出着生藻类5门8纲18目28科44属114种;着生藻类群落主要由硅藻组成,其次是蓝藻和绿藻。复兴镇以上河段主要以硅藻门的系带舟形藻（Navicula.cincta）、嗜盐舟形藻（Navicula.halophila）和变异直链藻（Melosira varians）为优势种,在复兴镇及其以下河段以绿藻门的泥泞颤藻（Oscillatoria limosa）占绝对优势,赤水中采样点以钝脆杆藻（Fragilaria capucina）为优势种,大同镇采样点以硅藻中的放射舟形藻（Navicula radiosa）及钝脆杆藻（Fragilaria capucina）为优势种。细胞密度为（0.78-3.66）×10^6 cells/cm^2,平均为2.10×10^6 cells/cm^2;多样性指数为1.78-3.12。赤水河赤水市河段水体水质已受到轻度污染。The composition of periphytic algae species in Chishui reach of Chishui River was investigated and analyzed by setting up different sampling sites to provide the scientific basis for ecological protection of Chishui reach of Chishui River.Results：114 species,44 genera,28 families,18 orders,8 classes,5 phyla are identified and the periphytic algae community is mainly composed of diatoms,followed blue-green algae and green algae.The cell density is （0.78-3.66）×10^6 cells/cm^2 with an average of 2.10 ×10^6 cells/cm^2..The dominant species of periphytic algae in upper reach of Fuxing Town are Navicula. cincta,Navicula.halophila and Melosira varians .The dominant species of periphytic algae in down reach of Fuxing Town and reach of Fuxing Town is O.limosa.The dominant species of periphytic algae in middle reach of Chishui City is Fragilaria capucina .The dominant species of periphytic algae in reach of Datong Town are Navicula radiosa and Fragilaria capucina .The diversity index of periphytic algae species in Chishui reach of Chishui River is 1.78-3.12,which indicates that the water quality is polluted mildly.

关 键 词：赤水河 着生藻类 多样性指数 水质评价 贵州 

分 类 号：X522[环境科学与工程—环境工程]