阔叶红松林不同演替阶段凋落物产量及其稳定性的影响因素

孙浩哲, 王襄平, 张树斌, 吴鹏, 杨蕾

Abiotic and biotic modulators of litterfall production and its temporal stability during the succession of broad-leaf and Korean pine mixed forest

SUN Hao-Zhe, WANG Xiang-Ping, ZHANG Shu-Bin, WU Peng, YANG Lei

表2 阔叶红松林不同演替阶段凋落物产量及其稳定性与各解释变量的决定系数(R²)

Table 2 Coefficients of determination (R²) for different factors in explaining annual litterfall production and its temporal stability across succesional stages of Korean pine forest

变量 Variable		凋落物产量 Annual litterfall production	凋落物产量稳定性 Stability of litterfall production
林分因子 Stand factor	最大树高 H_max	0.57^**	0.39^*
	最大胸径 DBH_max	0.45^*	0.55^**
	胸高断面积 TBA	0.43^*	0.57^**
	林冠空隙度 Gap fraction	-0.68^***	-0.53^**
功能性状 Functional trait	叶片碳含量 CWM_LC	-0.26	0.00
	叶片氮含量 CWM_LN	0.05	0.05
	比叶面积 CWM_SLA	-0.11	-0.54^**
生物多样性 Biodiversity	物种丰富度 Richness	0.65^**	0.42^*
	物种均匀度 Evenness	0.59^**	0.28
	功能多样性 Rao’s Q	0.45^**	0.16
	系统发育多样性 PD	0.32	0.24