川西亚高山森林凋落物去除对土壤腐殖质动态的影响

刘谣, 焦泽彬, 谭波, 李晗, 王丽霞, 刘思凝, 游成铭, 徐振锋, 张丽

Litter removal effects on dynamics of soil humic substances in subalpine forests of western Sichuan, China

LIU Yao, JIAO Ze-Bin, TAN Bo, LI Han, WANG Li-Xia, LIU Si-Ning, YOU Cheng-Ming, XU Zhen-Feng, ZHANG Li

表2 凋落物处理下不同采样时期川西亚高山3种森林类型土壤基本理化指标(平均值±标准误)

Table 2 Soil physical and chemical variables at different measurement times for the three forest types under contrasting litter treatments in subalpine forests of western Sichuan (mean ± SE)

时间 Time (a)	指标 Index	土壤含水量 Soil water content (%)	温度 Temperature (°C)	pH	有机碳含量 Organic carbon content (g·kg^-1)	全氮含量 Total nitrogen content (g·kg^-1)	全磷含量 Total phosphorus content (g·kg^-1)
1	BFI	54.94 ± 3.41^a	10.56 ± 0.05^a	5.82 ± 0.14^a	161.70 ± 25.4^a	0.25 ± 0.08^a	0.89 ± 0.07^a
	MFI	41.75 ± 9.09^a	10.41 ± 0.30^a	5.08 ± 0.11^b	121.83 ± 21.55^a	0.17 ± 0.07^a	0.87 ± 0.05^a
	CFI	55.61 ± 2.35^a	10.15 ± 0.06^a	4.76 ± 0.07^b	171.80 ± 20.08^a	0.28 ± 0.03^a	0.83 ± 0.05^a
	BFR	45.86 ± 7.70^a	10.45 ± 0.04^a	5.48 ± 0.06^a	96.46 ± 43.51^a	0.21 ± 0.06^a	0.86 ± 0.10^a
	MFR	53.82 ± 7.35^a	10.14 ± 0.15^a	5.50 ± 0.09^a	192.46 ± 44.59^a	0.30 ± 0.13^a	0.76 ± 0.06^a
	CFR	54.96 ± 1.50^a	9.75 ± 0.06^a	5.10 ± 0.25^a	166.63 ± 12.94^a	0.27 ± 0.06^a	0.78 ± 0.04^a
1.5	BFI	57.57 ± 2.10^a	5.00 ± 0.14^a	6.22 ± 0.14^a	186.73 ± 12.12^b	13.10 ± 1.59^a	0.76 ± 0.14^a
	MFI	57.59 ± 7.96^a	4.75 ± 0.11^a	5.37 ± 0.25^a	240.58 ± 18.48^a	11.36 ± 3.33^a	0.79 ± 0.05^a
	CFI	50.79 ± 1.88^a	4.65 ± 0.07^a	5.68 ± 0.45^a	211.02 ± 6.00^ab	11.10 ± 2.62^a	0.63 ± 0.13^a
	BFR	50.32 ± 3.02^a	4.70 ± 0.06^a	5.97 ± 0.35^a	116.24 ± 20.35^a	10.36 ± 0.84^a	0.74 ± 0.10^a
	MFR	53.32 ± 5.71^a	4.65 ± 0.07^a	5.54 ± 0.27^a	177.99 ± 51.16^a	10.37 ± 3.13^a	0.83 ± 0.08^a
	CFR	52.90 ± 4.42^a	4.56 ± 0.25^a	5.69 ± 0.24^a	228.29 ± 16.32^a	14.07 ± 1.11^a	0.71 ± 0.08^a
2	BFI	53.40 ± 8.82^a	10.24 ± 0.21^a	5.86 ± 0.21^a	121.61 ± 41.60^a	8.18 ± 2.54^a	0.47 ± 0.11^a
	MFI	58.46 ± 5.45^a	9.13 ± 0.05^a	5.81 ± 0.05^a	156.81 ± 31.94^a	7.75 ± 1.55^a	0.41 ± 0.06^a
	CFI	46.65 ± 3.35^a	9.09 ± 0.05^a	5.79 ± 0.05^a	99.19 ± 5.10^a	2.60 ± 1.19^a	0.22 ± 0.04^a
	BFR	46.29 ± 3.96^a	9.86 ± 0.05^a	5.74 ± 0.05^a	84.60 ± 18.86^a	3.29 ± 1.09^ab	0.44 ± 0.05^a
	MFR	48.75 ± 6.25^a	8.90 ± 0.12^a	5.91 ± 0.12^a	102.31 ± 21.54^a	5.25 ± 0.71^a	0.36 ± 0.04^ab
	CFR	43.88 ± 0.75^a	9.10 ± 0.14^a	5.62 ± 0.14^a	106.16 ± 10.74^a	0.82 ± 0.13^b	0.26 ± 0.02^b