亚热带森林中环境和物种多样性对灌木存活的影响

薛玉洁, 程安鹏, 李珊, 刘晓娟, 李景文

The effects of environment and species diversity on shrub survival in subtropical forests

Yujie Xue, Anpeng Cheng, Shan Li, Xiaojuan Liu, Jingwen Li

图3 非生物因子(a)、生物因子(b)以及功能性状(c)对灌木存活的相对影响。Soil pH: 土壤pH值; Soil N: 土壤氮含量; Soil C: 土壤碳含量; Soil C/N: 土壤碳氮比; topo.PC1-4: 地形因素第一至第四主成分; logTR: 乔木多样性(以2为底的对数); logSR: 灌木多样性(以2为底的对数); logTR:logSR: logTR和logSR的交互效应; Canopy cover: 林冠盖度; trait.PC1-4: 功能性状第一至第四主成分。• P < 0.1; * P < 0.05; *** P < 0.001; 空心圆代表效应不显著(P > 0.1)。

Fig. 3 Relative effect of abiotic factors (a), biotic factors (b) and shrub functional traits (c) on shrub survival. Soil N, Soil nitrogen content; Soil C, Soil carbon content; Soil C/N, Soil carbon to nitrogen ratio; topo.PC1-4, The first, second, third, and fourth principal component of topography, respectively; logTR, Tree richness (log2-transformed contrast); logSR, Shrub richness (log2-transformed contrast); logTR:logSR, Interaction of logTR and logSR; Canopy cover, The canopy cover degree of tree; trait.PC1-4, The first, second, third, and fourth principal component of traits, respectively. • P < 0.1; * P < 0.05; *** P < 0.001. Unfilled circles indicate insignificant effects (P > 0.1).