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5 青藏高原高寒草原紫花针茅叶片解剖结构特征主成分分析

Table 5 Principal component analysis of leaf structures of Stipa purpurea at alpine steppe of Qingzang Plateau

第一主成分 Coefficients of PC1 第二主成分 Coefficients of PC2 外表皮厚度 Outer epidermal thickness 0.47 -0.05 角质层厚度 Cuticle thickness 0.45 0.19 厚角细胞厚度 Collenchymatous cell thickness 0.41 0.32 气孔宽度 Stoma width 0.08 -0.39 导管直径 Vessel diameter 0.04 0.55 主脉导管腔面积/主脉维管束面积 Catheter cavity area/ area of main vascular bundle -0.16 0.55 内表皮厚度 Inner epidermal thickness -0.19 -0.21 叶片厚度 Leaf thickness -0.39 0.14 维管束面积/叶横切面积 Vascular area/ leaf cross sectional area -0.44 0.19