当前位置: 首页 > 文章 > 太湖鲚鱼渔获量变化与主要鱼类渔获量间关系的多元分析 安徽农业科学 2005,33 (9) 1657-1659
Position: Home > Articles > Multianalysis between Catches of Lake Anchovy and Catches of Main Fishes in Lake Taihu Journal of Anhui Agricultural Sciences 2005,33 (9) 1657-1659

太湖鲚鱼渔获量变化与主要鱼类渔获量间关系的多元分析

作  者:
刘恩生;许建新;程建新;曹萍
单  位:
安徽农业大学;中国科学院研究生院;江苏省太湖渔业管理委员会
关键词:
太湖;鲚鱼;主要鱼类;渔获量;多元分析
摘  要:
根据太湖1973~2002年的鱼类渔获量统计资料,应用多元线性回归分析及通径分析等方法,研究了太湖鲚鱼渔获量变化与主要鱼类渔获量间的关系。建立了太湖鲚鱼和主要鱼类渔获量间的最优线性回归模型。通径分析表明:对鲚鱼渔获量变化影响最大的是鲤、鲫鱼,其次是鱼白鱼和鲢鳙鱼,其他鱼类对鲚鱼的变化影响不明显(P>0.05)。
译  名:
Multianalysis between Catches of Lake Anchovy and Catches of Main Fishes in Lake Taihu
作  者:
LIU En-sheng et al(Graduate School of CAS,Beijing 100039)
关键词:
Lake Taihu;Lake anchovy;Main fishes;Catches;Multianalysis
摘  要:
Based on the statistics of fish catches from 1973 to 2002 in Lake Taihu,with the methods of stepwise regression analysis and path analysis,the effects of catches of main fishes on the changes of catches of lake anchovy(Coilia ectenes taihuensis Yen et Lin) in Lake Taihu were studied.The results showed that: the optimization regression model of lake anchovy was y=8?124.815?6-4.126?6W_3+3.193?6W_4-2.174?6W_5,and the results of path analysis was: the catches of common carp(Cyprinus carpio Linnaeus) and crucian carp(Carassius auratus Linnaeus)had the maximal effects on catches of lake anchovy,and the catches of topmouth culter(Erythroculter ilishaeformis Bleeker and Erythroculte rmongolian Basilewsky) and catches of silver carp(Hypophthalmichthys molitrix Valenciennes) and bighead(Aristichthys nobilis Richardson) following that.The path coefficient respectively was P_(y,4)=(0.749?8)(P<0.000?1),P_(y,3)=-0.322?3(P=0.010?2),P_(y,5)=-0.253?3(P=0.045?3).

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