海浪河春季底栖动物TWINSPAN分类及水质初步评价

TWINSPAN Classification of Zoobenthos and Evaluation of Water Quality in Hailang River in Spring

应用双向指示种(TWINSPAN)技术对海浪河春季的7个采样点进行分类和水质评价研究;共采集到环节动物、软体动物和节肢动物3大类,包括4纲7目9科14属共18种;结合污染指数,TWINSPAN分析结果表明海浪河春季采样点划分为四个类型,海浪河大桥6#点水质最好,其次为海南桥7#采样点,河夹大坝1#、2#点水质较差,3#、4#、5#采样点水质最差,但根据污染指数评价标准来看,水质都处于不同程度的污染状态。

The classification of zoobenthos and evaluation of water quality in seven testing spots of Hailang River in spring using TWINSPAN technique was studied in this paper.Collected annelid,mollusk and arthropod were divided into 4 classes,7 orders,9 families,14 genera and 18 species.Combined with pollution index,the analysis of TWINSPAN indicated that Hailang River＇s testing spots can be classified into four different types.One type included 6#,whose water quality is superior to the others.Another type of water quality was inferior to the first,involving 7#.The third type of water quality was worse,with 1# and 2# included.The last one was 3#、4#、5#.However,referring to their pollution indices,all of them belonged to different pollution levels.