高寒森林倒木在不同分解阶段的质量变化

常晨晖, 吴福忠, 杨万勤, 谭波, 肖洒, 李俊, 苟小林

Changes in log quality at different decay stages in an alpine forest

CHANG Chen-Hui,WU Fu-Zhong,YANG Wan-Qin,TAN Bo,XIAO Sa,LI Jun,GOU Xiao-Lin

表3 岷江冷杉倒木在不同分解阶段C:N、C:P和N:P的变化特征(平均值±标准偏差, n = 3)

Table 3 Variation characteristics of C:N, C:P and N:P in logs of Abies faxoniana at different decay stages (mean ± SD, n = 3)

	组分 Component	I	II	III	IV	V
C:N	心材 Heartwood	411 ± 59^a	386 ± 99^a	166 ± 76^b	373 ± 69^a	275 ± 176^ab
	边材 Sapwood	393 ± 176^a	1 497 ± 89^a	230 ± 54^a	291 ± 77^a	183 ± 135^a
	树皮 Bark	68 ± 14^ab	59 ± 16^bc	80 ± 20^be	35 ± 21^cd	26 ± 14^d
C:P	心材 Heartwood	6 553 ± 630^a	7 084 ± 33^a	14 052 ± 2 341^b	7 041 ± 49^a	5 757 ± 755^a
	边材 Sapwood	43 974 ± 8 810^a	19 762 ± 11 544^b	4 840 ± 1 461^c	5 210 ± 1 179^c	3 453 ± 270^c
	树皮 Bark	1 829 ± 326^ad	3 022 ± 69^bc	2 724 ± 186^cd	1 394 ± 916^a	1 609 ± 479^a
N:P	心材 Heartwood	16 ± 1.04^a	19 ± 5.67^a	100 ± 49.71^b	19 ± 3.41^a	29 ± 21.48^a
	边材 Sapwood	116 ± 34.01^a	30 ± 28.37^b	21 ± 6.00^b	18 ± 3.55^b	26 ± 13.81^b
	树皮 Bark	27 ± 1.19^a	53 ± 13.49^ab	35 ± 7.48^a	38 ± 17.54^a	71 ± 30.80^b