PP: pure plantation of Eucalyptus; MP: mixed plantation of Eucalyptus and Acacia mangium. TOC: total soil organic carbon; NH4-N: ammonium nitrogen; NO3-N: nitrate
nitrogen; TN: total nitrogen; LF: litterfall mass; C/N (soil): C/N ratio of soil; C/N (litterfall): C/N ratio of litterfall.
Means with the different letter in the same column are significantly different at p ¼ 0.05. Values in parentheses represent standard errors.