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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*()

图1. 川西亚高山3种林型凋落物自然输入与去除土壤的可提取腐殖质、胡敏酸和富里酸含量(平均值±标准误)。不同小写字母表示同一林型相同处理下不同采样时间土壤可提取腐殖质、胡敏酸和富里酸含量差异显著(p < 0.05)。*, 同一采样时间凋落物自然输入与凋落物去除之间差异显著(p < 0.05)。

Fig. 1. Soil extractable humic substances content, humic acid content and fulvic acid content as affected by litter input in broad-leaved forest, mixed coniferous and broad-leaved forest and coniferous forest in subalpine forests of western Sichuan (mean ± SE). Different lowercase letters indicate that the differences of extractable humic substances content, humic acid content and fulvic acid content between different measurement times within the same treatment are significant (p < 0.05). *, significant differences in soil humic substances content between litter treatments in the same measurement time (p < 0.05).