Table 13.
Summarized changes about plant community structure of 8 fixed plots in Qureus mongolica forest of Namsan(Mt.)(1994~2016)

Plot	Major species of dominance value change			Number of individual												The missing and being new species
	Canopy layer	Understory layer	Shrub layer	Canopy layer				Understory layer				Shrub layer				The missing species	The being new species	C*
1	Q. serrata(+)Q. aliena(+)Q. mongolica(-)	S. japonicus(+)A. pseudosieboldianum(+)S. alnifolia(-)	P. tricuspidata(+)Stephanandra incisa var. incisa(-)R. mucronulatum var. mucronulatum(-)	1st1994	2nd1998	3rd2005	4th2016	1st1994	2nd1998	3rd2005	4th2016	1st1994	2nd1998	3rd2005	4th2016	6 speciesR. trichocarpa,M. amurensis,Symplocos chinensis for. pilosa ect.	15 speciesC. japonica,A. elata,A. palmatum,Q. acutissima ect.	▲ 9
				56	47	48	22	187	186	160	102	1,044	636	1,228	640
Plot	Major species of dominance value change			Number of individual												The missing and being new species
	Canopy layer	Understory layer	Shrub layer	Canopy layer				Understory layer				Shrub layer				The missing species	The being new species	C*
2	Q. mongolica(․)	A. pseudosieboldianum(+)S. alnifolia(-)S. japonicus(-)	Stephanandra incisa var. incisa(+)Z. serrata(+)Magnolia obovata(+)	1st2000	2nd2005	3rd2007	4th2016	1st2000	2nd2005	3rd2007	4th2016	1st2000	2nd2005	3rd2007	4th2016	5 speciesSymplocos chinensis for. pilosa,C. orbiculatus,V. erosum,P. sargentii etc.	12 speciesC. japonica,L. cyrtobotrya,M. alba,V. coignetiae,Z. serrata,Magnolia obovata ect.	▲ 7
				17	15	17	3	39	37	38	33	228	168	104	128
3	S. alnifolia(+)K. septemlobus(+)P. sargentii(+)Q. mongolica(-)	S. alnifolia(+)A. pseudosieboldianum(+)Q. mongolica(-)S. japonicus(-)	S. japonicus(+)A. pseudosieboldianum(+)Q. mongolica(-)S. alnifolia(-)	18	18	18	11	25	23	22	22	252	176	164	292	3 speciesM. amurensis,R. mucronulatum var. mucronulatum,Rhododendron schlippenbachii	15 speciesP. tricuspidata,A. altissima,A. palmatum,R. chinensis,E. alatus for. ciliatodentatus ect.	▲ 12
4	Q. serrata(+)P. sargentii(+)Q. mongolica(-)	S. japonicus(+)S. alnifolia(-)Q. mongolica(-)P. sargentii(-)	A. elata(+)P. tricuspidata(+)R. pseudoacacia(-)S. incisa var. incisa(-)	11	11	13	5	25	27	24	30	328	280	240	452	4 speciesR. trichocarpa,J. rigida,L. maximowiczii,S. sieboldii	11 speciesE. alatus for. ciliatodentatus,S. china,P. coreana,R. crataegifolius,S. williamsii var. coreana ect.	▲ 7
5	R. pseudoacacia(-)Q. mongolica(-)P. sargentii(-)Q. aliena(-)	S. alnifolia(+)R. pseudoacacia(-)Q. mongolica(-)K. septemlobus(-)	S. incisa var. incisa(+)S. japonicus(+)V. erosum(-)S. sieboldii(-)	23	20	22	16	45	48	36	38	244	644	296	384	5 speciesQ. aliena, R. mucronulatum var.mucronulatum,Symplocos chinensis for. pilosa,U. laciniata,S. china	10 speciesE. nigrum,C. crenata,L. obtusifolium,A. palmatum,R. yedoense ect.	▲ 4
6	Q. mongolica(+)Z. serrata(+)P. sargentii(-)	Z. serrata(+)S. japonicus(+)S. alnifolia(+)	S. incisa var. incisa(+)S. alnifolia(-)L. obtusifolium(-)	16	16	16	10	29	23	18	15	164	364	280	236	4 speciesR. mucronulatum var.mucronulatum,Q. serrata,R. trichocarpa,C. orbiculatus	8 speciesS. williamsii,A. brevipedunculata,E. umbellata,C. apiifolia,S. japonicum ect.	▲ 4
7	Q. mongolica(-)P. sargentii(-)Z. serrata(-)F. rhynchophylla(-)S. alnifolia(+)A. pseudosieboldianum(+)	S. alnifolia(+)S. japonicus(+)P. sargentii(-)Z. serrata(-)	S. incisa var.incisa(+)F. rhynchophylla(-)K. septemlobus(-)	1st2000	2nd2005	3rd2007	4th2016	1st2000	2nd2005	3rd2007	4th2016	1st2000	2nd2005	3rd2007	4th2016	2 speciesJ. rigida,Q. serrata	9 speciesC. crenata,A. palmatum,A. altissima,R. crataegifolius,Z. piperitum ect.	▲ 7
				15	13	13	23	40	39	32	18	332	288	396	980
8	F. rhynchophylla(+)Q. mongolica(-)	S. alnifolia(+)S. japonicus(+)P. sargentii(-)	Q. mongolica(-)P. sargentii(-)S. alnifolia(-)S. incisa var.incisa(-)	16	17	16	13	36	33	39	24	336	196	192	584	1 speciesC. orbiculatus	12 speciesP. tricuspidata,Z. piperitum,A. brevipe dunculata,L. tulipifera,A. altissima ect.	▲ 11

C^*: Change in the number of species, (+) Increased the dominant point, (․) Maintaining the dominant position, (-) Less dominant point, ▲ Increased number of appearances.