模拟酸沉降对南亚热带季风常绿阔叶林土壤微生物群落结构的长期影响

胡苑柳, 陈国茵, 陈静文, 孙连伟, 李健陵, 窦宁, 张德强, 邓琦

Effects of long-term simulated acid rain on soil microbial community structure in a monsoon evergreen broad-leaved forest in southern China

HU Yuan-Liu, CHEN Guo-Yin, CHEN Jing-Wen, SUN Lian-Wei, LI Jian-Ling, DOU Ning, ZHANG De-Qiang, DENG Qi

表3 模拟酸沉降对土壤活性微生物总量以及各个类群微生物相对丰度的影响

Table 3 Effects of simulated acid rain treatments on the relative abundance of different microbial taxa

土层 Soil layer (cm)	处理 Treatment	总量 Total	细菌 B	革兰氏阳性菌 G+	革兰氏阴性菌 G-	放线菌 A	真菌 F	丛枝菌根真菌 AMF	真菌:细菌 F:B	革兰氏阳性菌:阴性菌 G+:G-
0-10	CK	34.07 (1.70)	29.74 (1.51)	24.29 (1.25)	4.15 (0.24)	6.52 (0.35)	4.33 (0.19)	1.05 (0.07)	0.15^b (0.01)	5.89 (0.18)
	T1	36.25 (1.76)	31.55 (1.57)	25.83 (1.31)	4.15 (0.19)	6.76 (0.34)	4.69 (0.23)	0.97 (0.06)	0.15^b (0.01)	6.21 (0.13)
	T2	31.54 (1.78)	26.76 (1.47)	21.87 (1.28)	3.60 (0.19)	5.68 (0.30)	4.77 (0.32)	0.89 (0.06)	0.18^a (0.01)	6.14 (0.32)
	T3	31.90 (2.70)	27.70 (2.31)	22.43 (1.87)	3.87 (0.37)	5.95 (0.49)	4.20 (0.40)	0.83 (0.07)	0.15^b (0.01)	5.92 (0.29)
10-20	CK	20.72 (1.58)	18.45 (1.37)	14.86 (1.14)	2.79 (0.18)	4.29 (0.31)	2.27^c (0.21)	0.51^b (0.05)	0.12^c (0.01)	5.30 (0.13)
	T1	26.38 (1.72)	23.09 (1.50)	18.53 (1.23)	3.46 (0.21)	5.03 (0.30)	3.29^ab (0.25)	0.60^ab (0.05)	0.14^b (0.01)	5.37 (0.26)
	T2	26.73 (1.29)	22.84 (1.07)	18.64 (0.90)	3.10 (0.21)	4.98 (0.24)	3.90^a (0.25)	0.69^a (0.03)	0.17^a (0.01)	6.16 (0.35)
	T3	22.86 (1.74)	19.94 (1.52)	15.91 (1.23)	3.02 (0.23)	4.29 (0.32)	2.92^bc (0.25)	0.54^ab (0.05)	0.15^b (0.01)	5.30 (0.21)