林分、土壤及空间因子对谷地云冷杉林叶面积指数空间异质性的影响

杨焕莹,宋建达,周焘,金光泽,姜峰,刘志理

Influences of stand, soil and space factors on spatial heterogeneity of leaf area index in a spruce-fir valley forest in Xiao Hinggan Ling, China

YANG Huan-Ying,SONG Jian-Da,ZHOU Tao,JIN Guang-Ze,JIANG Feng,LIU Zhi-Li

表2 小兴安岭谷地云冷杉林叶面积指数(LAI)空间变异的显著影响因子统计分析

Table 2 Summary statistics of significant influence factors of the spatial distribution of leaf area index (LAI) in a spruce-fir valley forest in Xiao Hinggan Ling, China.

因子 Factor 调整R2 Adjusted R2 F p a中等树密度 aDensitymid (N·hm-2) 0.17 46.77 0.000 1 a主要树种胸高断面积 aBAmajor (m2·hm-2) 0.05 14.03 0.000 4 a全部树阔针比 aPBBNtotal (%) 0.02 6.36 0.013 0 b容重 bBulk density (g·cm-3) 0.04 9.89 0.036 5 b质量含水率 bMass moisture content (g·g-1) 0.02 4.55 0.002 3