放牧对中国亚热带喀斯特山地灌草丛物种组成与群落结构的影响

黄侩侩, 胡刚, 庞庆玲, 张贝, 何业涌, 胡聪, 徐超昊, 张忠华

Effects of grazing on species composition and community structure of shrub tussock in subtropical karst mountains, southwest China

HUANG Kuai-Kuai, HU Gang, PANG Qing-Ling, ZHANG Bei, HE Ye-Yong, HU Cong, XU Chao-Hao, ZHANG Zhong-Hua

表1 中国亚热带喀斯特山地灌草丛非度量多维尺度排序(NMDS)排序轴与环境因子的相关性系数

Table 1 Correlation coefficients of non-metric multi-dimensional scaling (NMDS) ordination axes and environmental factors of shrub tussock in subtropical karst mountains of China

因子 Factor 灌木层 Shrub layer 草本层 Herb layer 群落整体 Total community NMDS1 NMDS2 R2 p NMDS1 NMDS2 R2 p NMDS1 NMDS2 R2 p G -0.387 0.922 0.330 0.001 -0.692 -0.722 0.151 0.001 0.764 -0.646 0.156 0.001 RER -0.587 0.810 0.146 0.001 -0.111 0.994 0.021 0.303 -0.059 0.998 0.013 0.492 Alt 0.948 0.319 0.018 0.349 0.874 0.486 0.129 0.001 -0.572 0.821 0.118 0.002 Slop 0.797 -0.604 0.032 0.177 0.310 0.951 0.059 0.049 -0.713 0.701 0.061 0.037 Asp -1.000 -0.003 0.004 0.795 -0.916 0.401 0.066 0.028 -0.414 -0.910 0.087 0.008 SOM -0.521 0.853 0.006 0.695 0.868 -0.496 0.220 0.001 0.481 0.877 0.295 0.001 TN -0.329 0.944 0.015 0.409 0.816 -0.578 0.163 0.001 0.590 0.808 0.309 0.001 TP 0.386 0.923 0.038 0.104 0.976 0.218 0.005 0.732 -0.681 0.732 0.008 0.670 TK -0.939 -0.345 0.001 0.974 0.774 0.634 0.091 0.006 -0.824 0.566 0.056 0.042 AN -0.384 0.923 0.018 0.367 0.804 -0.594 0.160 0.001 0.601 0.799 0.315 0.001 AP -0.794 0.608 0.019 0.340 0.995 0.101 0.068 0.023 -0.308 0.951 0.060 0.029 AK 0.574 0.819 0.049 0.055 0.834 -0.551 0.017 0.377 0.615 0.789 0.077 0.010 pH 0.924 -0.383 0.045 0.073 0.581 0.814 0.156 0.001 -0.371 0.929 0.170 0.001 TCa 0.941 0.337 0.070 0.020 0.722 0.692 0.042 0.076 -0.132 0.991 0.073 0.009 TMg 0.978 0.208 0.016 0.352 0.996 0.094 0.010 0.583 -0.125 0.992 0.007 0.681 Bd -0.469 -0.883 0.065 0.031 -0.602 0.798 0.040 0.085 -0.765 -0.644 0.160 0.001 Tp 0.471 0.882 0.065 0.025 0.606 -0.795 0.040 0.090 0.766 0.643 0.159 0.001 SWC 0.269 0.963 0.034 0.171 0.504 -0.864 0.196 0.001 0.860 0.510 0.276 0.001