雅鲁藏布江中下游底栖动物物种多样性及其影响因素

李正飞, 蒋小明, 王军, 孟星亮, 张君倩, 谢志才

Species diversity and driving factors of benthic macroinvertebrate assemblages in the middle and lower reaches of the Yarlung Zangbo River

Zhengfei Li, Xiaoming Jiang, Jun Wang, Xingliang Meng, Junqian Zhang, Zhicai Xie

表2 雅鲁藏布江底栖动物群落结构与环境因子关系的典范对应分析结果汇总表

Table 2 The key environmental factors affecting macroinvertebrate communities in the Yarlung Zangbo River based on canonical correspondence analysis

获取的关键因子 Key factors selected 与排序轴的相关系数 Correlation coefficients with the axes F P Axis 1 Axis 2 Axis 3 Axis 4 春季 Spring 海拔 Altitude 1.60 0.001 0.762 -0.183 -0.408 -0.182 河宽 Depth 1.93 0.001 0.643 0.019 0.121 0.164 pH 1.23 0.064 0.485 -0.405 0.292 0.097 流速 Velocity 1.25 0.080 -0.325 0.175 0.454 -0.606 秋季 Autumn 海拔 Altitude 1.78 0.001 0.070 0.266 0.612 -0.521 沙% Sand% 1.89 0.004 0.682 0.243 -0.339 -0.015 pH 1.61 0.004 -0.165 -0.205 -0.226 -0.478 溶解氧 Dissolved oxygen 1.67 0.004 -0.406 0.453 -0.168 0.226 水深 Depth 1.46 0.052 0.289 0.123 0.551 0.244 河宽 Width 1.48 0.021 0.203 -0.268 0.194 -0.047