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6 马尾松人工林林窗中心、边缘和林下两种凋落叶难降解物质含量的比较(平均值±标准误差)

Table 6 Contents of litter recalcitrant components for two species at gap center, edge and under closed canopy (mean ± SE)

物种 Species	位置 Position	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)
樟 Cinnamonum camphora	GC	4.431 ± 1.50^a	6.896 ± 2.06^a	295.056 ± 47.16^b	156.247 ± 41.23^a
	GE	4.157 ± 1.80^a	7.141 ± 2.19^a	305.455 ± 60.37^ab	155.730 ± 48.89^a
	CK	4.140 ± 1.49^a	7.266 ± 2.71^a	315.632 ± 46.46^a	174.366 ± 76.70^a
红椿 Toona ciliata	GC	2.369 ± 0.93^c	17.308 ± 9.46^b	143.995 ± 80.54^b	89.303 ± 45.93^a
	GE	2.824 ± 0.62^b	17.136 ± 9.16^b	147.101 ± 52.99^b	82.573 ± 30.67^a
	CK	3.459 ± 0.50^a	22.029 ± 11.79^a	186.601 ± 71.29^a	91.674 ± 44.52^a