还建立了林分密度指数动态预估模型。
And also makes a structure of density of stocking index dynamic estimate model.
选择林分密度指数(SDI)作为反映林分中林木之间平均拥挤指标。
Stand density index (SDI) was applied as a quantitative index to measure mean crowd degree between trees.
林分和单株的树干、树枝、树皮生物量组成比例均随立地指数、造林密度的变化无明显的差异。
The ratios of stem, bark and branch biomass to total biomass of stand and individual tree are basically steady in different site index and planting density.
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