Impact of Site Disturbances from Harvesting and Logging on Soil Physical Properties and Pinus kesiya Tree Growth

Table 1

Bulk density (mg m⁻³) with standard errors in parenthesis as related to soil disturbance and soil depth at the study site.

Soil depth (cm)	Soil disturbance
	Compacted	Compacted plus tillage	Noncompacted
0–10	0.45 (0.01)^bz	0.58 (0.01)^by	0.67 (0.02)^bx
10–20	0.54 (0.01)^az	0.66 (0.01)^ay	0.75 (0.02)^ax
LSD	0.02
CV%	3.1

Note: means with different letter differ (𝑃<0.001). The first letter after each mean refers to comparison between depths and the second letter to comparison among soil disturbances.