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1 小兴安岭谷地云冷杉林叶面积指数(LAI)变异函数的理论模型及参数

Table 1 Theory semivariogram theoretical models and fitted parameters for leaf area index (LAI) values in a spruce-fir valley forest in Xiao Hinggan Ling, China

理论模型 Theory model 块金值 Nugget (C0) 基台值 Sill (C0 + C) 空间结构比 Spatial structure ratio C0/(C0 + C) 变程 Range (A, m) 决定系数 R2 高斯模型 Gaussian 0.204 1.751 0.117 37 0.887 指数模型 Exponential 0.251 2.541 0.099 53 0.859 球状模型 Spherical 0.079 2.519 0.031 43 0.880