Table 2. T-test of A. koreana in Mt. Jirisan and Mt. Hallasan by DBH class.

DBH class(㎝)	District		t-value	P
	Mt. Jirisan (n=323)	Mt. Hallasan (n=655)
	Mean(SD)	Mean(SD)
<5	4.2(0.6)	4.0(0.8)	0.942a	0.348
5-10	7.6(1.3)	7.6(1.5)	0.163a	0.871
10-20	15.1(2.9)	14.1(2.7)	3.695a	0.000
20-30	24.8(2.8)	22.5(2.1)	5.313b	0.000
30-40	34.4(2.6)	32.1	-	-
40-50	43.5(1.6)	-	-	-
Total	18.1(9.4)	11.2(5.5)	12.276a	0.000