Table 2. Importance value of major species according to the survey plot types of the elapsed year after forest road construction at subtree layer

Scientific name (Korean name)	The elapsed year after forest road construction
	S	1yr			2yr			25yr			Total
		E	C	R	E	C	R	E	C	R
Quercus variabilis (굴참나무)	14.5							38.3	37.3		18.0
Platycarya strobilacea (굴피나무)		50.0									10.0
Prunus spp. (벚나무류)	11.1				22.4				14.9		9.7
Quercus mongolica (신갈나무)	9.1	25.0			13.8						9.6
Styrax obassia (쪽동백나무)		25.0			16.2						8.2
Styrax japonicus (때죽나무)	13.7							23.5			7.4
Quercus serrata (졸참나무)	11.1							9.5	14.9		7.1
Pinus densiflora (소나무)	4.5							19.1	10.4		6.8
Prunus sargentii (산벚나무)	4.5				6.9				22.4		6.8
Carpinus laxiflora (서어나무)	20.2										4.0
Toxicodendron trichocarpum (개옻나무)	3.3				16.4						3.9
Aria alnifolia (팥배나무)	4.5				9.5						2.8
Quercus dentata (떡갈나무)								9.5			1.9
Cornus controversa (층층나무)					9.5						1.9
Lindera obtusiloba (생강나무)					5.3						1.1
Magnolia kobus (목련)	3.3										0.7
Total (16 species)	100.0	100.0			100.0			100.0	100.0		100.0