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

表3 凋落物、培养时间和林型对川西亚高山森林土壤可提取腐殖质、胡敏酸、富里酸含量、胡敏酸/富里酸及腐殖化度的三因素方差分析(F值)

Table 3 Results of three way ANOVA (F value) for testing the effects of litter, measurement time and forest type on soil extractable humic substances (EHS), humic acid (HA), fulvic acid (FA) content, and the ratios of humic acid/fulvic acid (HA/FA) and humic acid/extractable humic substances (PQ) in subalpine forests of western Sichuan

因子 Factor 可提取腐殖质 EHS 胡敏酸 HA 富里酸 FA 胡敏酸/富里酸 HA/FA 胡敏酸/可提取腐殖质 PQ 凋落物 Litter 11.571** 0.827 5.659* 2.745 0.098 培养时间 Time 73.835** 28.137** 38.713** 10.653** 4.263* 林型 Type 10.808** 31.479** 15.783** 5.963** 19.403** 凋落物×时间 Litter × Time 15.654** 19.443** 8.544** 2.142 2.054 凋落物×林型 Litter × Type 3.328 9.650** 3.853* 5.657* 10.340** 时间×林型 Time × Type 8.584** 8.011** 12.489** 5.838** 7.266** 凋落物×时间×林型 Litter × Time × Type 1.111 5.777** 4.080** 4.936** 8.496**