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Table 2 Descriptions and abbreviations of plot-level stand structural attributes (SSA)

From: Classifying development stages of primeval European beech forests: is clustering a useful tool?

Abbr.

Description

N

Number of trees per hectare

DBHmed

Median diameter at breast height

DBHiqr

Interquartile range of diameter at breast height

Hmax

Maximum tree height

Vollive

Volume of living trees per hectare

Voldead

Deadwood volume per hectare

Reg

Proportion of the area covered by regeneration