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Discrimination of water quality based on PFU microbial communities and changing pattern of microbial parameters

CHEN Jian 1,SHEN Yunfen 2 \ (1.Faculty of Life Sciences ,Hubei University,Wuhan 430062;2.Institute of Hydrobiology,Chinese Academy of Seience,Wuhan 430072)  
By means of discriminant analysis,integrating data of five biotic parameters ( HI,D,Seq,G and T 90% ) of microbial communities in water system of 26 stations from two regions,the canonical discriminant functions and classification functions were established and analysis of correlation of paramenters of microbial communities with chemical combined pollution index ( P ) and correlation among five biotic paramenters have carried out.Groups to which stations belong respectively can be differentiated efficiently by canonical functions obtained.Classification functions obtained can be used directly to classify stations.Group predicted for all stations,except of one station,was same as group marked according to P .Further analysis of correlation of biotic parameters with P indicated that,along water unpolluted to seriously polluted,there was an interval within which characteristics of correlation of five biotic parameters with P changed sharply.In that interval,correlations of D and Seq with P turned from positive to negative, T 90% from negative correlation to positive correlation, HI from non\|significant positive correlation to significant positive correlation, G from significant positive correlation to nonsignificant correlation.The turning interval to refer this interval which,according to the present study,may exist in the interval of water polluted.
【Fund】: 国家自然科学基金!资助重点项目 (编号 3 973 0 0 70 )
【CateGory Index】: X17
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