三江并流地区干旱河谷植物物种多样性海拔梯度格局比较
杨阳, 韩杰, 刘晔, 忠永茨仁, 石松林, 斯那此里, 许玥, 应凌霄, 张婉君, 沈泽昊

A comparison of the altitudinal patterns in plant species diversity within the dry valleys of the Three Parallel Rivers region, northwestern Yunnan
Yang Yang,Jie Han,Ye Liu,Ciren Zhongyong,Songlin Shi,Cili Sina,Yue Xu,Lingxiao Ying,Wanjun Zhang,Zehao Shen
表2 植物群落样带物种丰富度格局GLM模型的回归系数及其统计显著性(? 代表类别变量, 对应的系数代表类别变量不同水平与模型缺省水平, 即截距的差异值, 这对应的河流是金沙江, 对应的植被带是灌草丛带。统计检验的显著性: ***P<0.001; ** P<0.01; * P<0.05; # 0.05< P<0.1)。
Table 2 The coefficients and corresponding statistic significance of the generalized linear models for species richness patterns of the plant communities transects. ? refers to categorical variable, the corresponding coefficient equals to the intercept difference between the referring level and the default level, which is the Jinsha River when considering the variable “river”, and the Shrub & Herb section when considering the variable “vegetation type”.
环境因子
Environmental factors
草本种
Herb species
灌木种
Shrub species
乔木种
Tree species
全部种
Total species
纬度 Latitude 0.233*** 0.332*** 0.404*** 0.286***
经度 Longitude -0.561 1.417** 0.775 0.227
海拔 Elevation 3.11E-4*** 4.01E-4** 4.54E-4 3.71E-4***
坡向 余弦 Aspect cos -0.124*** 0.033 0.021 -0.078**
坡向 正弦 Aspect sin -0.019 0.204*** 0.562*** 0.084**
坡度 Slope -2.851E-3# 4.501E-3# -4.989E-5 -0.550E-3
澜沧江 Lancang River? 0.308 -0.685** -2.046*** -0.201
怒江 Nu River? 1.783*** 1.190*** 0.622 1.554***
森林段 Forest section? -0.221* 0.061 1.074*** -0.062
Adj.-R2 0.671 0.341 0.407 0.713