Table 2. Importance value of major species in each vegetation units.

Unit	Scientific name	Layer				MIV
		T1	T1	S	H
1	Quercus mongolica	59.3	27.8	4.1	6.7	37.1
	Acer pseudosieboldianum	-	35.3	14.5	3.7	13.4
	Aria alnifolia	10.5	11.2	5.7	4.2	9.5
	Styrax japonicus	5.3	6.4	11.8	1.0	6.3
	Alnus sibirica	8.2	2.3	2.9	0.8	5.0
	Quercus serrata	9.8	1.2	-	0.8	5.0
	Prunus spp.	2.1	7.0	3.5	1.2	3.8
	Euonymus oxyphyllus	-	4.6	10.5	3.4	3.3
	Disporum smilacinum	-	-	-	28.4	2.2
	Stephanandra incisa	-	-	12.2	3.7	2.2
	Viburnum erosum	-	-	9.7	2.6	1.7
	Kalopanax septemlobus	1.6	1.2	0.6	0.6	1.2
	Parthenocissus tricuspidata	-	1.8	0.6	5.0	1.0
	Rhododendron mucronulatum	-	-	5.5	0.6	0.9
	Pinus densiflora	1.6	-	-	0.4	0.8
	Fraxinus sieboldiana	1.6	-	-	0.2	0.7
	Callicarpa japonica	-	-	3.6	1.9	0.7
	Symplocos sawafutagi	-	-	3.3	0.4	0.5
	Others(45 Species)	-	1.2	11.5	34.3	4.7
	Total(63 Species)	100.0	100.0	100.0	100.0	100.0
2	Quercus mongolica	58.7	14.0	4.1	2.8	32.3
	Acer pseudosieboldianum	-	43.0	14.9	5.3	15.9
	Aria alnifolia	17.5	13.3	2.5	1.4	12.7
	Quercus serrata	15.6	-	-	1.8	7.3
	Styrax japonicus	2.7	5.6	12.3	1.8	5.0
	Kalopanax septemlobus	2.7	5.7	1.7	1.8	3.4
	Alnus incana subsp. hirsuta	2.7	4.2	2.5	0.4	3.0
	Stephanandra incisa	-	-	14.3	3.9	2.5
	Disporum smilacinum	-	-	-	29.9	2.3
	Prunus spp.	-	4.2	2.2	1.1	1.7
	Cornus controversa	-	4.2	2.2	0.4	1.7
	Robinia pseudoacacia	-	4.2	2.1	-	1.6
	Viburnum erosum	-	-	7.9	1.8	1.3
	Euonymus oxyphyllus	-	-	6.3	3.9	1.3
	Parthenocissus tricuspidata	-	-	0.9	8.9	0.8
	Lespedeza maximowiczii	-	-	3.4	1.8	0.7
	Clerodendrum trichotomum	-	1.5	0.4	-	0.5
	Vitis amurensis	-	-	2.5	1.1	0.5
	Others(40 Species)	-	-	19.7	32.5	5.5
	Total(58 Species)	100.0	100.0	100.0	100.0	100.0
3	Quercus mongolica	56.8	6.4	1.6	1.0	28.5
	Tilia amurensis	26.5	16.9	7.9	1.1	18.8
	Acer pseudosieboldianum	-	31.6	20.2	3.0	13.1
	Carpinus cordata	2.0	31.0	11.9	1.9	12.5
	Pinus koraiensis	8.3	-	5.8	1.2	4.8
	Rhododendron schlippenbachii	-	-	22.1	2.4	3.6
	Cornus controversa	1.6	4.7	-	0.1	2.2
	Acer pictum subsp. mono	3.2	-	1.5	0.8	1.7
	Tripterygium regelii	-	2.1	0.8	4.8	1.2
	Magnolia sieboldii	-	-	6.9	0.7	1.1
	Symplocos sawafutagi	-	-	6.4	0.9	1.0
	Acer komarovii	-	-	5.1	1.8	0.9
	Betula ermanii	1.6	-	-	-	0.7
	Calamagrostis arundinacea	-	-	-	9.2	0.7
	Euonymus sachalinensis	-	1.1	1.8	0.2	0.6
	Others(86 Species)	-	6.4	8	70.9	8.4
	Total(101 Species)	100.0	100.0	100.0	100.0	100.0
4	Quercus mongolica	46.2	12.1	0.5	1.1	25.2
	Tilia amurensis	31.5	19.3	7.1	1.1	21.6
	Acer pseudosieboldianum	-	31.2	17.2	1.6	12.4
	Carpinus cordata	-	26.7	16.0	1.1	10.8
	Pinus koraiensis	7.6	1.3	2.4	0.7	4.4
	Cornus controversa	4.5	4.0	0.8	-	3.4
	Rhododendron schlippenbachii	-	-	20.4	1.7	3.3
	Betula ermanii	1.9	2.7	-	-	1.7
	Acer pictum var. mono	2.6	-	1.9	0.4	1.5
	Tripterygium regelii	-	1.3	3.3	3.3	1.2
	Calamagrostis arundinacea	-	-	-	13.7	1.1
	Actinidia arguta	1.9	-	0.8	-	1.0
	Acer mandshuricum	1.9	-	0.8	-	1.0
	Magnolia sieboldii	-	-	6.1	0.8	1.0
	Symplocos sawafutagi	-	-	5.9	0.9	1.0
	Abies nephrolepis	1.9	-	-	-	0.9
	Acer komarovii	-	1.3	2.3	0.4	0.8
	Ainsliaea acerifolia	-	-	-	9.9	0.8
	Carex siderosticta	-	-	-	7.0	0.5
	Others(77 Species)	-	-	14.6	56.5	6.6
	Total(96 Species)	100.0	100.0	100.0	100.0	100.0
5	Fagus multinervis	37.4	38.6	38.5	3.0	35.3
	Acer pictum var. mono	14.4	7.6	13.0	1.8	11.1
	Celtis jessoensis	7.9	14.1	8.3	0.4	9.3
	Phellodendron amurense	16.1	-	-	0.2	7.4
	Cornus controversa	12.5	2.5	1.2	0.8	6.8
	Hydrangea petiolaris	-	14.6	-	4.3	4.8
	Schizophragma hydrangeoides	1.6	10.1	2.3	7.9	4.8
	Sorbus commixta	4.7	5.0	6.0	0.4	4.7
	Prunus takesimensis	5.4	2.5	1.2	0.4	3.5
	Acer takesimense	-	5.0	-	-	1.6
	Tilia insularis	-	-	5.9	0.4	0.9
	Styrax obassia	-	-	4.8	1.2	0.8
	Callicarpa japonica	-	-	4.8	0.6	0.8
	Ulmus laciniata	-	-	4.7	0.6	0.8
	Arachniodes standishii	-	-	-	9.7	0.7
	Taxus cuspidata	-	-	3.5	0.2	0.6
	Actinidia arguta	-	-	2.3	2.4	0.5
	Ligustrum foliosum	-	-	2.3	1.8	0.5
	Others(46 Species)	-	-	1.2	63.7	5.1
	Total(64 Species)	100.0	100.0	100.0	100.0	100.0
6	Fagus multinervis	20.4	39.9	32.9	3.6	27.0
	Sorbus commixta	11.1	17.3	6.6	1.1	11.5
	Tilia insularis	5.7	17.9	11.8	0.5	10.0
	Acer pictum var. mono	17.4	-	10.3	1.1	9.7
	Phellodendron amurense	15.7	-	-	-	7.2
	Prunus takesimensis	5.7	6.5	9.9	0.5	6.2
	Celtis jessoensis	8.7	4.6	1.8	-	5.7
	Hydrangea petiolaris	-	13.7	1.8	5.8	4.9
	Cornus controversa	6.5	-	1.8	-	3.3
	Ulmus laciniata	6.5	-	-	-	3.0
	Acer takesimense	2.4	-	9.9	0.5	2.7
	Schizophragma hydrangeoides	-	-	1.8	12.0	1.2
	Viburnum carlesii	-	-	6.6	1.4	1.1
	Dryopteris crassirhizoma	-	-	-	13.4	1.0
	Arachniodes standishii	-	-	-	8.1	0.6
	Osmunda japonica	-	-	-	7.7	0.6
	Styrax obassia	-	-	3.3	-	0.5
	Others(16 Species)	-	-	1.8	44.3	3.6
	Total(40 Species)	100.0	100.0	100.0	100.0	100.0
7	Fagus multinervis	41.4	37.1	31.9	4.1	35.7
	Acer takesimense	4.9	23.4	9.9	3.3	11.3
	Sorbus commixta	10.9	8.2	13.2	2.9	9.8
	Tsuga ulleungensis	1.5	7.1	21.2	2.8	6.4
	Prunus takesimensis	9.8	4.7	0.9	0.3	6.1
	Acer pictum var. mono	9.4	2.3	1.7	-	5.3
	Tilia insularis	6.5	4.7	4.7	1.7	5.3
	Styrax obassia	3.4	2.3	5.5	2.1	3.3
	Alnus alnobetula subsp. fruticosai	4.9	-	1.2	-	2.5
	Cornus controversa	2.7	3.6	-	-	2.3
	Kalopanax septemlobus	4.6	-	-	0.6	2.2
	Taxus cuspidata	-	2.3	7.2	1.8	2.0
	Schizophragma hydrangeoides	-	1.8	0.9	13.4	1.7
	Hydrangea petiolaris	-	2.3	-	9.6	1.5
	Allium microdictyon	-	-	-	11.4	0.9
	Maianthemum dilatatum	-	-	-	10.7	0.8
	Others(31 Species)	-	-	1.8	35.5	3
	Total(47 Species)	100.0	100.0	100.0	100.0	100.0