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LIU Yong, CHENG Jia-hua. A study on seasonal changes of the fish quantity distribution in the East China Sea and the Huanghai Sea by factor analysis[J]. Haiyang Xuebao, 2008, 30(4): 123-130.
Citation:
LIU Yong, CHENG Jia-hua. A study on seasonal changes of the fish quantity distribution in the East China Sea and the Huanghai Sea by factor analysis[J]. Haiyang Xuebao, 2008, 30(4): 123-130.
LIU Yong, CHENG Jia-hua. A study on seasonal changes of the fish quantity distribution in the East China Sea and the Huanghai Sea by factor analysis[J]. Haiyang Xuebao, 2008, 30(4): 123-130.
Citation:
LIU Yong, CHENG Jia-hua. A study on seasonal changes of the fish quantity distribution in the East China Sea and the Huanghai Sea by factor analysis[J]. Haiyang Xuebao, 2008, 30(4): 123-130.
Key Laboratory of Marine and Estuarine Fisheries, Ministry of Agriculture, East China Sea Fisheries Institute, Chinese Academy of Fishery Sciences, Shanghai 200090, China;State Key Laboratory of Estuarine and Coastal Research, East China Normal University, Shanghai 200062, China
2.
State Key Laboratory of Estuarine and Coastal Research, East China Normal University, Shanghai 200062, China
On the basis of the data from bottom traw l surveys in 4 seasons of 2000 in the East China Sea and the Huanghai Sea,studies on the seasonal characteristics of fish quantity distribution are conducted by the method of factor analysis.By R type analysis,the results show that there are 4 species,Rajakanojei,Coiliamystus,Muraenesox cinereus and Collichthys niveatus,which are correlated closely in spring;and 5 species,Engraulis japonicas,Pseudosciaenapolyatis,Lophius litulon,Chelidonichthys kumu and Saurida elongate,in summer;and 5 species,Trichiurus haumela,Pampus nozawae,Erisphex potti,Pneumatop horus japonicas and Pseudosciaena polyatis,in autumn;and 3 species,Trichiurus haumela,Champsodon capensis and Acropomajaponicum,in winter.By the approbation of historic survey information,the main relation among the 5 species of spring is the relation between preys and predators.By the promoted analysis,it is discovered that the water areas where correlative species of each season assembled together are correspond to these areas where these species take physiology cycling migrations in each season Based on Q type analysis,the synthesis predominant species in each season and their mainly distributed water area can be got.The results show that Trichiurus haumela and Pseudosciaenap olyatis are the absolute predominant species in the East China sea and the Huanghai Sea Except the two synthesis predominant species,the others are all smallty pefishes which are all with low value and quick growth characteristics
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