Table 7. Changes of Basal area and population of the Quercus mongolica community in Mt. Cheongryang, Incheon
(Unit: 400m²)

Species name	1999							2013
	Basal area(cm2)			No. of individual				Basal area(cm2)			No. of individual
	C	U	Total	C	U	S	Total	C	U	Total	C	U	S	Total
Pinus rigida	1,416	388	1,804	14	11	-	25	2,078	-	2,078	4	-	-	4
Pinus densiflora	34	-	34	1	-	-	1	-	-	-	-	-	-	-
Juniperus rigida	-	-	-	-	-	-	-	-	-	-	-	-	8	8
Betula davurica	674	48	722	8	2	-	10	814	57	871	3	1	-	4
Corylus heterophyllavar. thunbergii	-	-	-	-	-	-	-	-	-	-	-	-	12	12
Alnus hirsuta	795	-	795	6	-	-	6	246	-	246	2	-	4	6
Castanea crenata	-	123	123	-	3	8	11	227	-	227	1	-	8	9
Quercus acutissima	95	7	102	1	1	4	6	694	3	697	2	1	8	11
Quercus dentata	154	-	154	1	-	-	1	201	-	201	1	-	-	1
Quercus aliena	-	7	7	-	1	4	5	1,017	-	1,017	1	-	-	1
Quercus mongolica	13,846	1,265	15,111	58	54	60	172	18,431	727	19,158	24	9	28	61
Quercus serrata	-	11	11	-	1	-	1	6,255	-	6,255	7	-	8	15
Magnolia obovata	-	-	-	-	-	-	-	-	14	14	-	2	12	14
Lindera obtusiloba	-	13	13	-	1	4	5	-	97	97	-	7	20	27
Sorbus alnifolia	270	766	1,036	4	50	68	122	285	2,046	2,331	1	57	48	106
Prunus sargentii	334	58	391	2	3	8	13	1,773	-	1,773	3	-	4	7
Lespedeza cyrtobotrya	-	-	-	-	-	4	4	-	-	-	-	-	-	-
Lespedeza bicolor	-	-	-	-	-	4	4	-	-	-	-	-	-	-
Robinia pseudoacacia	171	203	374	2	8	32	42	1,071	61	1,132	4	5	32	41
Rhus trichocarpa	-	36	36	-	1	12	13	-	95	95	-	3	24	27
Parthenocissus tricuspidata	-	-	-	-	-	16	16	-	-	-	-	-	-	-
Rhododendron mucronulatum	-	25	25	-	4	316	320	-	60	60	-	7	172	179
Symplocos chinensisfor. pilosa	-	-	-	-	-	16	16	-	3	3	-	1	4	5
Styrax japonicus	-	238	238	-	18	56	74	-	504	504	-	23	76	99
Fraxinus rhynchophylla	-	4	4	-	1	-	1	-	-	-	-	-	-	-
Viburnum erosum	-	-	-	-	-	-	-	-	-	-	-	-	12	12
Viburnum dilatatum	-	-	-	-	-	4	4	-	-	-	-	-	-	-
Smilax china	-	-	-	-	-	4	4	-	-	-	-	-	16	16
Smilax sieboldii	-	-	-	-	-	-	-	-	-	-	-	-	12	12
Total	17,789	3,192	20,980	97	159	620	876	33,092	3,667	36,759	53	116	508	677

C: canopy layer, U: understory layer, S: shrub layer.