Long-Term Impact Evaluation of Ground-Base Skidding on Residual Damaged Trees in the Hyrcanian Forest, Iran

Table 3

General measurement of some characteristics of remaining trees in each abandoned skid trail.

Traffic intensity
Low				Medium			High
Class of age	Quanttitive characteristics		Damage trees (%)	Quanttitive characteristics		Damage trees (%)	Quanttitive characteristics		Damage trees (%)
	*DBH (cm)	*BA (cm^2)		DBH (cm)	BA (cm^2)		DBH (cm)	BA (cm^2)
1–5 yr	35.60 a	0.138 a	30.61	42.57 a	0.207 a	26.53	48.71 a	0.209 a	42.86
5–10 yr	40.25 a	0.209 a	25.64	42.26 a	0.179 a	35.89	47.13 a	0.265 a	38.46
10–15 yr	28.26 a	0.095 a	25.00	35.80 a	0.134 a	42.30	37.54 a	0.134 a	32.70
15–20 yr	44.00 a	0.183 a	39.39	47.71 a	0.174 a	18.18	40.92 a	0.153 a	42.42

*Values of DBH and BA are means. Same letters within each traffic treatments shows nonsignificant differences (P <  .05).