西南亚高山针叶林主要树种互作及增温对根区土壤微生物群落的影响

罗林, 黄艳, 梁进, 汪恩涛, 胡君, 贺合亮, 赵春章

Effects of plant interspecific interaction and warming on soil microbial community in root zone soil of two dominant tree species in the subalpine coniferous forest in southwestern China

LUO Lin, HUANG Yan, LIANG Jin, WANG En-Tao, HU Jun, HE He-Liang, ZHAO Chun-Zhang

表1 不同栽种处理和增温对土壤理化性质的影响

Table 1 Effects of different planting treatments and warming on soil physicochemical properties

土壤因子 Soil factor	处理 Treatment	C (mean ± SD)	Y (mean ± SD)	L (mean ± SD)	H (mean ± SD)	P	W	P × W
pH	U	7.69 ± 0.02^b	7.80 ± 0.04^a	7.70 ± 0.02^b	7.81 ± 0.02^a	10.82^***	1.08	4.65^*
pH	W	7.81 ± 0.02^a*	7.81 ± 0.01^a	7.67 ± 0.02^b	7.78 ± 0.03^a
SM (%)	U	30.80 ± 0.00^bc	29.60 ± 0.01^c	34.86 ± 0.01^a	32.11 ± 0.00^b	9.51^***	637.00^***	41.51^***
SM (%)	W	0.27 ± 0.00^a*	0.24 ± 0.00^b*	0.22 ± 0.00^c*	0.23 ± 0.01^bc*
TN (mg·kg^-1)	U	2.90 ± 0.04^ab	2.93 ± 0.15^ab	3.15 ± 0.17^a	2.70 ± 0.04^b	0.66	7.31^*	2.28
TN (mg·kg^-1)	W	2.64 ± 0.15^a	2.63 ± 0.11^a	2.66 ± 0.08^a*	2.79 ± 0.08^a
TC (mg·kg^-1)	U	29.86 ± 0.37^a	31.59 ± 0.91^a	32.38 ± 1.35^a	30.06 ± 0.63^a	1.81	12.54^**	1.10
TC (mg·kg^-1)	W	28.37 ± 1.04^a	28.55 ± 0.36^a*	29.51 ± 0.22^a	29.48 ± 0.76^a
NH₄⁺-N (mg·kg^-1)	U	11.29 ± 1.17^a	12.70 ± 1.08^a	9.93 ± 0.38^a	11.48 ± 1.07^a	3.09	0.02	2.91
NH₄⁺-N (mg·kg^-1)	W	11.03 ± 0.38^b	9.93 ± 0.51^b	8.93 ± 0.21^b	15.06 ± 2.36^a
NO₃^--N (mg·kg^-1)	U	5.76 ± 0.17^b	8.07 ± 0.38^a	7.82 ± 0.31^a	6.35 ± 0.26^b	108.88^***	945.64^***	53.29^***
NO₃^--N (mg·kg^-1)	W	13.39 ± 0.27^b*	15.06 ± 0.07^a*	13.69 ± 0.07^b*	8.10 ± 0.32^c*
TC/TN	U	10.31 ± 0.19^b	10.80 ± 0.38^ab	10.29 ± 0.12^b	11.15 ± 0.18^a	0.50	0.87	2.42
TC/TN	W	10.77 ± 0.30^a	10.90 ± 0.38^a	11.11 ± 0.34^a	10.57 ± 0.03^a