【摘要】 <正> 因子分析是分析存在于多个变量之间关系的一种多元统计分析方法。通过因子分析可以从大量的观测数据中提取出少数有代表性的因子,进而用这些因子来说明多变量数据所提供的信息。因子分析以往多数是用于研究地质、古生物、陆地动植物以及海洋浮游生物的系统分类上。用这种方法研究海洋鱼类数量分布关系,笔者至今尚未查阅到有关的文献。 根据试捕调查^**,胶洲湾水域是多种鱼类交替进行生殖、摄食和发育的场所,胶洲湾的环境受潮流、河口影响较大。鱼种类繁多,数量分布比较复杂。更多还原

【Abstract】 In this paper,the method of factor analysis (or principal component analysis) is used to make a monthly analysis of the distribution of the fish numbers in the Jiaozhou Bay from June 1980 to May 1981.The principal components and factors which stand for the numbers of fish species and sampled stations respectively are taken as indices for studying the distribution of the fish numbers in the studied area.Not only do they show the distributive relationship between the numbers of various species and that between different stations,but they also help us gain an insight into the structure of the distributions of fish species in the Jiaozhou Bay.The representatives selected are also found in relation to the station,the dense one.The method used here proves of certain practical value for future studies.Up to now,no papers have yet been found to have reported the topic.The operations involved are performed on theDJS-6 computer.更多还原