Table 11.
Change of plant cluster structure in Plot 8 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 (%) Quercus mongolica 52.76 - 22.32 30.10 50.49 - 2.27 25.62 52.40 15.04 10.05 32.89 47.52 - 17.94 26.75
Fraxinus rhynchophylla 47.24 30.80 5.90 34.87 49.51 18.41 2.06 31.24 47.60 5.74 - 25.71 52.48 - 0.50 26.32
Sorbus alnifolia - 56.62 10.31 20.59 - 65.31 6.97 22.93 - 62.19 11.20 22.60 - 78.33 1.00 26.28
Styrax japonicus - 11.09 1.45 3.94 - 14.60 - 4.87 - 15.57 - 5.19 - 21.67 2.20 7.59
Stephanandra incisa var. incisa - - 41.23 6.87 - - 47.07 7.85 - - 47.79 7.97 - - 39.62 6.60
Euonymus alatus for. ciliatodentatus - - 7.98 1.33 - - 16.39 2.73 - - 4.98 0.83 - - 8.57 1.43
Parthenocissus teicuspidata - - - - - - - - - - 13.96 2.33 - - 7.16 1.19
Zanthoxylum piperitum - - - - - - - - - - - - - - 3.61 0.60
A. brevipedunculata - - - - - - - - - - - - - - 3.58 0.60
Liriodendron tulipifera - - - - - - - - - - - - - - 3.08 0.51
Ailanthus altissima - - - - - - - - - - - - - - 2.80 0.47
Cornus kousa - 1.49 - 0.50 - 1.68 - 0.56 - 1.47 - 0.49 - - 2.32 0.39
Smilax sieboldii - - 0.82 0.14 - - 1.48 0.25 - - - - - - 1.13 0.19
Viburnum erosum - - 8.40 1.40 - - 22.28 3.71 - - 10.00 1.67 - - 1.06 0.18
Carllicarpa japonica - - - - - - - - - - - - - - 0.96 0.16
Rubus crataegifolius - - - - - - - - - - - - - - 0.88 0.15
Euonymus oxyphyllus - - - - - - - - - - - - - - 0.73 0.12
Prunus sargentii - - 0.94 0.16 - - - - - - - - - - 0.61 0.10
Lespedeza maximowiczii - - - - - - - - - - 2.03 0.34 - - 0.60 0.10
Rubus oldhamii - - - - - - - - - - - - - - 0.61 0.10
Lespedeza bicolor - - - - - - - - - - - - - - 0.61 0.10
Morus bombycis - - - - - - - - - - - - - - 0.44 0.07
Celastrus orbiculatus - - 0.65 0.11 - - 1.48 0.25 - - - - - - - -
The number of populatio 16 36 336 388 17 33 196 246 16 39 192 247 13 24 584 621
Amount of species(species) 11 10 10 22
Shannon’s species diversity index(H’) 0.7564 0.7972 0.8703 0.9877
Various species diversity indices(2016) H’(Shannon) J’(evenness) D(dominance) H’max
0.9877 0.7358 0.2642 1.3424
C: Canopy layer of importance percentage, U: Understory layer of importance percentage, S: Shrub layer of importance percentage, M: Mean importance percentage.