因子分析法在中华鲟栖息地生态因子研究中的应用

Application of Factor Analysis in Study of Ecological Factor of Acipenser Sinensis Habitat

针对中华鲟栖息地保护的问题,在已有的中华鲟产卵场产卵季节各生态因子实测资料的基础上,运用因子分析法对中华鲟栖息地生态影响因子进行了分析,从中提取了影响中华鲟栖息地的3个主因子。结果表明,第一个主因子F1主要由平均流速、含沙量及底质贡献,其为影响中华鲟卵孵化的条件;第二个主因子F2主要由平均水深和平均流速贡献,其为影响中华鲟产卵的条件;第三个主因子F3主要由平均水温和食卵鱼数贡献,其为影响中华鲟卵存活的条件。

Aiming at the problem of Acipenser Sinensis habitat protection,factor analysis method is used to analyze ecological influencing factor of Acipenser Sinensis habitat based on the existed measurement data of each ecological factor about the Acipenser Sinensis spawning grounds during the spawning season.And then 3 main factors affected the habitats have been extracted.The results show that the first principal factor is mainly contributed by the mean velocity,sediment concentration and the bottom material,which affects the condition of the egg incubation of the Acipenser Sinensis;the second principal factor is mainly contributed by the mean depth and the mean velocity,which affect the condition of the oviposition;the third principal factor is mainly contributed by the average water temperature and the amount of the fish which eat the eggs of other fish,and it affect the condition of the spawn surviving.