模拟根系分泌物C:N化学计量特征对川西亚高山森林土壤碳动态和微生物群落结构的影响

梁儒彪, 梁进, 乔明锋, 徐振锋, 刘庆, 尹华军

Effects of simulated exudate C:N stoichiometry on dynamics of carbon and microbial community composition in a subalpine coniferous forest of western Sichuan, China

LIANG Ru-Biao,LIANG Jin,QIAO Ming-Feng,XU Zhen-Feng,LIU Qing,YIN Hua-Jun

表3 不同C:N化学计量特征的根系分泌物模拟添加对天然林和人工林土壤pH的影响(平均值±标准偏差)

Table 3 Effects of simulated root exudates under different C:N stoichiometry on soil pH in both natural forest and plantation (mean ± SD)

处理 Treatment	天然林 Natural forest	人工林 Plantation
对照 Control (CK)	7.09 ± 0.02^d	7.03 ± 0.05^d
仅添加N N-only	7.26 ± 0.02^c	7.12 ± 0.02^c
C:N = 10	7.32 ± 0.03^b	7.15 ± 0.01^bc
C:N = 50	7.39 ± 0.03^a	7.20 ± 0.02^ab
C:N = 100	7.35 ± 0.03^b	7.27 ± 0.02^a
仅添加C C-only	7.26 ± 0.03^c	7.14 ± 0.02b^c