Table 10.
Change of plant cluster structure in Plot 7 of Qureus mongolica forest of the northern slope of Namsan(Mt.)(2000~2016) (Area: 400m²)

Layer	Species	2000				2005				2007				2016
		C1	U	S	M	C	U	S	M	C	U	S	M	C	U	S	M
Relative ratio (%)	Sorbus alnifolia	-	39.56	11.57	15.12	-	47.55	6.76	16.98	4.24	40.66	6.29	16.72	15.22	59.22	1.94	27.67
	Quercus mongolica	44.6	-	5.02	23.14	45.71	-	12.52	24.94	41.63	5.14	2.11	22.88	15.30	-	33.30	13.20
	Prunus sargentii	26.14	19.69	-	19.63	26.8	-	-	13.4	26.52	-	1.58	13.52	25.95	-	1.11	13.16
	Styrax japonicus	-	15.03	3.57	5.61	-	16.47	-	5.49	-	31	1.45	10.58	-	31.64	4.46	11.29
	Zelkova serrata	23.24	3.24	2.44	13.11	21.2	12.97	-	14.92	21.30	4.82	5.55	13.18	20.1	-	0.46	10.13
	Acer pseudosieboldianum	-	12.93	9.16	5.84	-	14.47	24.6	8.92	-	15.77	8.14	6.61	14.25	-	12.38	9.19
	Stephanandra incisa var. incisa	-	-	7.55	1.26	-	-	12.94	2.16	-	-	18.66	3.11	-	-	19.5	3.25
	Fraxinus rhynchophylla	6.02	-	6.6	4.11	6.29	-	6.69	4.26	6.31	-	12.48	5.24	5	-	2.52	2.92
	Castanea crenata	-	-	-	-	-	-	-	-	-	-	-	-	4.18	-	0.37	2.15
	Kalopanax septemlobus	-	2.09	0.77	0.83	-	2.76	-	0.92	-	2.63	-	0.88	-	5.64	-	1.88
	Acer palmatum	-	-	-	-	-	-	-	-	-	-	-	-	-	3.49	-	1.16
	Parthenocissus teicuspidata	-	-	17.37	2.9	-	-	-	-	-	-	10.41	1.74	-	-	5.85	0.98
	A. brevipedunculata	-	-	3.33	0.56	-	-	-	-	-	-	-	-	-	-	5.61	0.94
	Viburnum erosum	-	-	15.8	2.63	-	-	12.03	2.01	-	-	2.78	0.46	-	-	2.58	0.43
	Rhododendron mucronulatum var. mucronulatum	-	7.46	0.6	2.59	-	5.78	4.06	2.6	-	-	10.97	1.83	-	-	2.36	0.39
	Ailanthus altissima	-	-	-	-	-	-	-	-	-	-	-	-	-	-	2.35	0.39
	Symplocos chinensis for. pilosa	-	-	1.38	0.23	-	-	2.53	0.42	-	-	0.59	0.1	-	-	1.18	0.2
	Ligustrum obtusifolium	-	-	4.22	0.7	-	-	6.29	1.05	-	-	2.61	0.44	-	-	0.85	0.14
	Rubus crataegifolius	-	-	-	-	-	-	-	-	-	-	-	-	-	-	0.8	0.13
	Zanthoxylum piperitum	-	-	-	-	-	-	-	-	-	-	-	-	-	-	0.6	0.1
	L. maximowiczii	-	-	-	-	-	-	-	-	-	-	3.07	0.51	-	-	0.46	0.08
	Carllicarpa japonica	-	-	7.87	1.31	-	-	8.6	1.43	-	-	4.81	0.8	-	-	0.37	0.06
	Smilax sieboldii	-	-	0.77	0.13	-	-	0.73	0.12	-	-	1.16	0.19	-	-	0.26	0.04
	Euonymus oxyphyllus	-	-	-	-	-	-	-	-	-	-	1.29	0.22	-	-	0.21	0.04
	Morus bombycis	-	-	-	-	-	-	-	-	-	-	-	-	-	-	0.26	0.04
	Celastrus orbiculatus	-	-	-	-	-	-	-	-	-	-	-	-	-	-	0.21	0.04
	Juniperus rigida	-	-	0.69	0.12	-	-	-	-	-	-	0.7	0.12	-	-	-	-
	Quercus serrata	-	-	1.29	0.22	-	-	0.73	0.12	-	-	-	-	-	-	-	-
	Euonymus alatus for. ciliatodentatus	-	-	-	-	-	-	1.52	0.25	-	-	0.53	0.09	-	-	-	-
	Prunus padus	-	-	-	-	-	-	-	-	-	-	3.7	0.62	-	-	-	-
	Pueraria montana var. lobata	-	-	-	-	-	-	-	-	-	-	0.59	0.1	-	-	-	-
	Robinia pseudoacacia	-	-	-	-	-	-	-	-	-	-	0.59	0.1	-	-	-	-
The number of populatio		15	40	332	387	13	39	288	340	13	32	396	441	23	18	980	1,021
Amount of species(species)		19				17				23				26
Shannon’s species diversity index(H’)		1.1287				1.0375				1.1667				0.8177
Various species diversity indices(2016)		H’(Shannon)				J’(evenness)				D(dominance)				H’max
		0.8177				0.5779				0.4221				1.4150

C: Canopy layer of importance percentage, U: Understory layer of importance percentage, S: Shrub layer of importance percentage, M: Mean importance percentage.