喀斯特常绿落叶阔叶林凋落物产量动态及影响因素

熊松, 淦江, 谢彦军, 邓晰朝, 覃国乐, 彭晚霞, 曾馥平, 占志立, 谭卫宁, 黄国勤, 杜虎

Dynamics of litter production and its determinants in a subtropical mixed evergreen and deciduous broad-leaved forest in a karst ecosystem

Song Xiong, Jiang Gan, Yanjun Xie, Xizhao Deng, Guole Qin, Wanxia Peng, Fuping Zeng, Zhili Zhan, Weining Tan, Guoqin Huang, Hu Du

图6 凋落物总量与其影响因素的结构方程模型。图中实线表示作用路径显著, 虚线表示作用路径不显著。箭头宽度表示该关系的强度。箭头旁边的值是具有相应统计意义的标准化路径系数。近似均方根误差(CFI)和比较拟合指数(RMSEA)为模型拟合优度指数。R2表示由组合自变量解释的因变量的总变化。* P < 0.05, *** P < 0.001。

Fig. 6 Structural equation modelling of total litter production and its influencing factors. The solid line indicates that the action path is significant, and the dashed line indicates that the action path is not significant. The arrow width indicates the strength of the relationship. Values next to the arrows are the normalized pathway coefficients with the corresponding statistical significance. Comparative fit index (CFI) and root mean square error of approximation (RMSEA) were used as indicators of model goodness fit index. R2 represents the total change in the dependent variable explained by the combined independent variable. * P < 0.05, *** P < 0.001.