高寒草原优势种紫花针茅叶片解剖结构对青藏高原高寒干旱环境适应性分析

吴建波, 王小丹

Analyzing leaf anatomical structure of dominant species Stipa purpurea adapting to alpine and drought environment at Qingzang Plateau

WU Jian-Bo, WANG Xiao-Dan

表4 主成分分析特征根与方差贡献率

Table 4 Eigenvalues and extraction squared loading of principal component analysis

成分 Component 特征根植 Eigenvalue 变异系数 Percentage of variance (%) 累计值 Cumulative (%) 1 4.80 53.32 53.32 2 2.67 29.68 83.00 3 0.94 10.42 93.42 4 0.28 3.08 96.50 5 0.22 2.44 98.94 6 0.08 0.86 99.80 7 0.02 0.20 100.00 8 0.00 0.00 100.00