关键词: 唐鱼;生境;生态因子；主成分分析;石门国家森林公园

Abstract:

To understand habitat characteristics of Tanichthys albonubes, a field survey was carried out on the habitat of T.albonubes in Shimen National Forest Park from April 2009 to March 2010. The results showed that there were three type of habitat of T.albonubes: the Utype river, mudsandbottom stream and sandstonebottom stream. It was found via PCA (principal component analysis) that altitude, river depth, velocity and human disturbance intensity were the main factors in the formation of habitats. In addition, velocity and human disturbance had an independent effect upon habitat selection. However, river depth and bottom composition had no obvious effect.

Key words:  Tanichthys albonubes; habitats; ecological factor; principal component analysis; Shimen National Forest Park