主要阴离子平均含量均以落叶松人工林溪流水中为最高。
The average monthly content of anions in stream water was the highest under larch plantation.
对于平缓坡的落叶松人工林，拖拉机的集材效率优于畜力的集材效率。
For larch plantations on the gentle slope, the operation efficiency of tractor skidding is better than that of animal skidding.
在立地条件一致的前提下，研究了落叶松人工林土壤养分含量的年动态变化趋势。
On the premise of identity for site conditions, the annual dynamic changes of soil nutrients under larch plantation were studied.
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