Table 8. Changes of Basal area and population of the Pinus rigida 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	18,668	1,360	20,028	132	39	-	171	16,804	2,498	19,302	48	11	-	59
Pinus densiflora	1,023	420	1,443	9	7	-	16	1,341	-	1,341	6	-	-	6
Betula davurica	-	29	29	-	2	-	2	-	-	-	-	-	-	-
Alnus hirsuta	929	504	1,434	11	12	-	23	503	57	561	3	2	-	5
Castanea crenata	-	35	35	-	2	-	2	20	71	90	1	4	28	33
Quercus acutissima	133	118	251	1	8	8	17	799	55	854	2	3	12	17
Quercus variabilis	836	127	963	4	7	12	23	415	122	537	1	8	60	69
Quercus dentata	-	-	-	-	-	-	-	-	-	-	-	-	16	16
Quercus aliena	102	-	102	1	-	88	89	-	13	13	-	1	4	5
Quercus mongolica	1,027	238	1,265	6	17	216	239	1,672	378	2,050	5	16	88	109
Quercus serrata	13	96	109	1	11	140	152	314	307	621	1	9	80	90
Cocculus triobus	-	-	-	-	-	8	8	-	-	-	-	-	4	4
Lindera obtusiloba	-	-	-	-	-	-	-	-	23	23	-	2	4	6
Spiraea prunifoliafor. simpliciflora	-	-	-	-	-	-	-	-	-	-	-	-	48	48
Sorbus alnifolia	139	226	365	1	12	32	45	-	177	177	-	4	8	12
Rubus parvifolius	-	-	-	-	-	16	16	-	-	-	-	-	-	-
Rosa multiflora	-	-	-	-	-	4	4	-	-	-	-	-	-	-
Prunus padus	-	-	-	-	-	-	-	-	64	64	-	1	-	1
Prunus sargentii	1,924	169	2,094	11	11	56	78	5,271	1,079	6,350	11	33	24	68
Lespedeza cyrtobotrya	-	-	-	-	-	24	24	-	-	-	-	-	4	4
Indigofera kirilowii	-	-	-	-	-	8	8	-	-	-	-	-	-	-
Robinia pseudoacacia	313	354	667	5	24	72	101	1,658	468	2,126	5	19	56	80
Rhus chinensis	-	-	-	-	-	4	4	-	-	-	-	-	-	-
Rhus trichocarpa	-	-	-	-	-	-	-	-	7	7	-	1	4	5
Euonymus japonica	-	-	-	-	-	-	-	-	-	-	-	-	8	8
Celastrus orbiculatus	-	-	-	-	-	8	8	-	-	-	-	-	-	-
Acer palmatum	-	-	-	-	-	-	-	-	-	-	-	-	4	4
Parthenocissus tricuspidata	-	-	-	-	-	4	4	-	-	-	-	-	-	-
Rhododendron mucronulatum	-	56	56	-	7	144	151	-	3	3	-	1	76	77
Symplocos chinensisfor. pilosa	-	-	-	-	-	8	8	-	-	-	-	-	4	4
Styrax japonicus	-	3	3	-	1	12	13	-	214	214	-	6	68	74
Fraxinus mandshurica	-	5	5	-	1	-	1	-	-	-	-	-	-	-
Fraxinus rhynchophylla	-	18	18	-	1	-	1	-	-	-	-	-	-	-
Callicarpa japonica	-	7	7	-	1	-	1	-	-	-	-	-	12	12
Smilax china	-	-	-	-	-	16	16	-	-	-	-	-	52	52
Smilax sieboldii	-	-	-					-	-	-	-	-	20	20
Total	25,107	3,765	28,874	182	163	880	1,225	28,797	5,536	34,333	83	121	684	888

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