结果表明，全氮、碱解氮和有机质是黄土丘陵区人工林土壤主要的肥力指标，其含量能更好地反映土壤肥力状况。
The results showed that total nitrogen, available nitrogen and organic matter were the main fertility indicators for soil fertility evaluation in the planted forest land on the Loess Plateau.
在单位面积蓄积量的标准划分时充分考虑到了不同林型标准不同，进而分林型进行指标标准的划分。
We took different forest types with different standards into account when dividing by stocking volume per unit area. Therefore, we should consider forest types as an indicator standard further.
水土保持林有效覆盖率是水土保持林建设中的一个重要指标。
Effective cover rate for soil and water conservation forests is an important index in the construction of forestry.
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