马尾松人工林林窗大小对两种凋落叶难降解物质含量的影响

张艳, 张丹桔, 张健, 杨万勤, 邓长春, 李建平, 李勋, 唐仕姗, 张明锦

Effects of forest gap size on litter recalcitrant components of two tree species in Pinus massoniana plantations

ZHANG Yan,ZHANG Dan-Ju,ZHANG Jian,YANG Wan-Qin,DENG Chang-Chun,LI Jian-Ping,LI Xun,TANG Shi-Shan,ZHANG Ming-Jin

表4 不同分解阶段两种凋落叶难降解物质含量的独立样本t检验

Table 4 Independent sample t-test analysis on the content of litter recalcitrant components for two species for different decomposition periods

位置 Positions	分解时间 Decomposition time (d)	缩合单宁 Condensed tannins (g·kg^-1)	总酚 Total phenol (g·kg^-1)	木质素 Lignin (g·kg^-1)	纤维素 Cellulose (g·kg^-1)
GC	30	6.006^**	-20.507^**	16.402^**	7.960^**
	90	4.215^**	-18.649^**	23.926^**	6.395^**
	180	7.979^**	-7.687^**	17.272^**	6.275^**
	270	8.536^**	7.344^**	2.514^**	9.165^**
GE	30	7.696^**	-19.183^**	17.031^**	7.593^**
	90	0.262^**	-22.250^**	21.326^**	6.054^**
	180	6.080^**	-10.222^**	7.791^**	5.069^**
	270	2.377^**	11.263^**	11.122^**	9.986^**
CK	30	2.994^*	-24.952^**	-0.436	0.752
	90	0.709	-19.510^**	6.972^*	1.765
	180	1.035	-5.670^*	9.120^**	6.819^**
	270	0.143	4.042^*	20.254^**	2.975