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

Table 3

Pinus kesiya height, stem diameter, and volume index (SVI) at the end of three growing seasons in different treatments at the study site.

Variable	Year 1			Year 2			Year 3
	T1	T2	T3	T1	T2	T3	T1	T2	T3
Height, cm	92.1^a	92.0^a	92.4^a	156.8^a	159.4^a	153.3^a	269.5^a	273.8^a	265.1^a
Basal diameter, mm	17.6^a	17.7^a	17.6^a	34.2^a	35.1^a	33.5^a	59.2^a	59.6^a	58.8^a
Diameter at breast height, mm	—	—	—	12.7^a	12.7^a	12.8^a	26.3^a	26.5^a	25.9^a
Stem volume index, cm^3	312^a	315^a	313^a	2034^a	2163^a	1920^a	9693^a	9926^a	9366^a
Trees with measurable dbh, %	—	—	—	11.5^a	11.8^a	10.2^a	98.9^a	98.5^a	97.4^a
Tree mortality, %	—	—	—	—	—	—	2.3^a	2.4^a	2.3^a

Note: means followed by the same letter are not significantly (𝑃>0.05) different among treatments for a given year and tree variable. T1: compacted; T2: compacted plus tillage; T3: Noncompacted.