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.

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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.

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引入地位指数和密度指数可大幅提高林龄单因变量平均高生长模型的拟合度。

Repameterizing the average tree height growth model improved the fitting results a lot by introducing site index and density index variables.

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