青海省长江源区鱼类分布及多样性格局

马文俊, 刘思嘉, 李柯懋, 简生龙, 薛长安, 韩庆祥, 魏金良, 陈生学, 牛依萌, 崔洲平, 隋瑞臣, 田菲, 赵凯

Fish diversity and distribution in the source region of the Yangtze River in Qinghai Province

Ma Wenjun, Liu Sijia, Li Kemao, Jian Shenglong, Xue Chang’an, Han Qingxiango, Wei Jinliang, Chen Shengxue, Niu Yimeng, Cui Zhouping, Sui Ruichen, Tian Fei, Zhao Kai

图4 长江源区各水系鱼类群落典范对应分析图。不同颜色的点代表不同水系的鱼类群落，环境因子代表的箭头长度越长，对鱼类群落影响越大，点越靠近代表的环境因子箭头，此环境因子对该点鱼类影响越大。

Fig. 4 Canonical correspondence analysis (CCA) of fish communities in each water system of the Yangtze River source region. Points in different colors represent fish communities from different water systems. The length of the environmental factor arrows indicates the magnitude of their influence on fish communities. Points closer to an arrow indicate a stronger influence of that environmental factor on the corresponding fish community.