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《Journal of Anhui Agricultural Sciences》 2006-08
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Regression Model Analysis of the Relationship among Catches of Main Fishes in Lake Taihu

LIU En-sheng et al (Graduate School of CAS,Beijing 100039)  
Based on the statistics of fish catches from 1983 to 2002 in Lake Taihu,with the methods of correlative and stepwise regression analysis,the relationship among catches of main fishes had been studied. Results showed that except for no correlation between the catch of black carp and grass carp and the catch of other main fishes. Six stepwise regression models were educed and their correlative coefficients reached to very significant at the level of 0.001.According to the investigation of main fishes' food composition,mechanisms of the relationship among catches of main fishes were analyzed. The conclusions were that the six stepwise regression models described the change rules of main fishes' catches in the lake; however the four stepwise regression models W1=12 803-5.524 6 W3+2.373 6 W4-3.8909 W5,W2=186.757 6+1.517 4 W3+0.091 9 W7,W5=1 633.578 9-0.083 7 W1+0.255 3 W4 and W7=7 652.735 1-0.423 2 W1-5.343 9W3+2.262 4 W4 maybe express the mutual relationship among main fishes in the lake.
【Fund】: 国家“863”与资助项目(2002AA601013)。
【CateGory Index】: S932.4
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【Citations】
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1 LIU Ensheng~(1,2,3) LIU Zhengwen~2 CHEN Weimin~2 BAO Chuanhe~3 CHEN Kaining~(1,2)(1:Graduate School of CAS,Beijing 100039,P.R.China)(2:Nanjing Institute of Geography and Limnology,CAS,Nanjing 210008,P.R.China)(3:Anhui Agicultural University,Hefei 230036,P.R.China);A Study on the Change of Lake Anchovy(Coilia ectenes taihuensis Yen et Lin)Catches and Its Mutual Relationship to the Biological Environment in Lake Taihu[J];Journal of Lake Science;2005-04
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