不同林龄、树种落叶松人工林径向生长与气候变化的关系

温晓示,陈彬杭,张树斌,徐凯,叶新宇,倪伟杰,王襄平

Relationships of radial growth with climate change in larch plantations of different stand ages and species

Xiao-Shi WEN,Bin-Hang CHEN,Shu-Bin ZHANG,Kai XU,Xin-Yu YE,Wei-Jie NI,Xiang-Ping WANG

表4 环境因子、林分结构特征对年轮宽度指数与气温、帕尔默干旱指数的PCA1、2轴得分的解释力(R2)

Table 4 The explanatory power of environmental factors and stand structural characteristics on the scores of PCA axes 1 and 2 of ring width index and air temperature, palmer drought severity index (R2)

变量 Variable 年降水量 Mean annual precipitation 潜在蒸发量 Potential evapotranspiration 林龄 Stand age 林分密度 Stem density 蓄积量 Wood volume 立地条件 Site quality 树种 Tree species PCA1 -0.522** -0.722*** 0.091 0.287* 0.512** 0.013 0.007 PCA2 -0.087 0.000 -0.660*** 0.011 -0.197 0.090 0.056