青藏高原东缘常见阔叶木本植物叶片性状对环境因子的响应

杨继鸿,李亚楠,卜海燕,张世挺,齐威

Response of leaf traits of common broad-leaved woody plants to environmental factors on the eastern Qinghai-Xizang Plateau

YANG Ji-Hong,LI Ya-Nan,BU Hai-Yan,ZHANG Shi-Ting,QI Wei

表3 青藏高原东缘常见阔叶木本植物种内叶片性状与环境因子相关性的卡方检验结果

Table 3 Chi-square test results of the within-species correlation between leaf traits of common broad-leaved woody plants and environmental factors on the eastern Qinghai-Xizang Plateau

性状 Traits 海拔 Altitude PC1 PC2 N(+) N(-) χ2 p N(+) N(-) χ2 p N(+) N(-) χ2 p LL 20 50 12.86 <0.01 40 30 1.43 0.23 36 34 0.06 0.81 LW 22 47 9.06 <0.01 39 29 1.47 0.23 38 31 0.71 0.40 LL/LW 28 41 2.45 0.12 38 31 0.71 0.40 31 38 0.71 0.40 LA 19 51 14.63 <0.01 39 31 0.91 0.34 41 29 2.06 0.15 LT 36 25 1.98 0.16 33 26 0.83 0.36 25 36 1.98 0.16 PL 22 37 3.81 0.05 34 27 0.80 0.37 27 32 0.42 0.52 LWC 21 25 0.35 0.56 26 20 0.78 0.38 20 26 0.78 0.38 SLA 36 30 0.55 0.46 35 31 0.24 0.62 30 36 0.55 0.46 LA/PL 23 38 3.69 0.06 30 31 0.02 0.90 39 22 4.74 0.03 SD 27 35 1.03 0.31 27 35 1.03 0.31 34 28 0.58 0.45 SL 40 24 4.00 0.04 33 31 0.06 0.80 30 34 0.25 0.61 SW 40 24 4.00 0.04 33 31 0.06 0.80 35 29 0.56 0.45 SL/SW 33 31 0.06 0.80 34 30 0.25 0.62 36 28 1.00 0.32 SA 36 28 1.00 0.32 32 32 0.00 1.00 31 33 0.06 0.80 SPI 31 33 0.06 0.80 30 34 0.25 0.62 38 26 2.25 0.13