Assessment of ground-based skidding impacts on the horizontally rate and extent of soil disturbance along the margin of the skid trail

Table 7 Mean values of microporosity influenced by traffic (20 and 40 passes) and slope (0–10, 10–20 and >20 %) at various distances

	Slope (%)
Passage Distance zone (m)	0–10		10–20		>20
Passage Distance zone (m)	20	40	20	40	20	40
0.5	38.86cA	40.19cA	42.22bA	47.67bA	48.51aA	51.85aA
1.00	35.21bB	36.48cB	36.33bB	44.76bB	45.28aB	47.68aB
1.50	34.90aB	35.97cB	35.48aBC	38.11bC	36.22aC	45.09aC
2.00	34.72aB	34.05cC	34.7aC	36.97bC	35.11aC	42.94aD

Microporosity was measured as 34.52 % for the control area. Values are mean. Different letters within each treatment shows significant differences (P < 0.05)
Capital case letters refer to the comparison made among four distance zones for each skidding cycle and slope class separately (column)
Lower case letters refer to the comparison made between two slope categories at each skidding cycle for the various distance zones (row)

ISSN: 1297-966X