Table 6. Change of importance percentage of the Robinia pseudoacacia community in Mt. Cheongryang, Incheon
(Unit: 1,200m2)

Species name 1999 2013 Change value (%)
C (%) U (%) S (%) M (%) C (%) U (%) S (%) M (%)
Pinus rigida 1.3 1.9 - 1.3 - - - - -1.3
Pinus densiflora - - - - - 2.6 - 0.9 +0.9
Larix leptolepis - 0.4 - 0.2 - - - - -0.2
Betula davurica 1.1 1.1 - 0.9 - - - - -0.9
Corylus heterophylla var. thunbergii - - 1.1 0.2 - - 4.7 0.8 +0.6
Alnus hirsuta 4.7 4.1 - 3.7 - - - - -3.7
Castanea crenata - 2.0 5.5 1.6 2.3 9.8 10.3 6.1 +4.5
Quercus acutissima 2.5 2.3 0.9 2.1 12.3 6.7 3.8 9.0 +6.9
Quercus variabilis 4.0 - 4.0 2.7 10.6 8.0 4.2 8.7 +5.0
Quercus dentata - 3.5 3.3 1.7 - - 2.0 0.3 -1.4
Quercus aliena 5.7 3.0 3.6 4.5 - 3.0 5.5 1.9 -2.6
Quercus mongolica 12.3 19.4 13.9 14.9 9.6 4.6 6.8 7.4 -7.5
Quercus serrata 5.4 13.5 14.9 9.7 4.4 20.1 15.9 11.6 +1.9
Cocculus triobus - - 0.3 0.1 - - - - -0.1
Magnolia obovata - - - - - 0.9 0.3 0.4 +0.4
Lindera obtusiloba - - 6.7 1.1 - 2.6 4.0 1.5 +0.4
Spiraea prunifolia for. simpliciflora - - - - - - 0.5 0.1 +0.1
Sorbus alnifolia - 0.4 0.9 0.3 - 3.9 0.4 1.4 +1.1
Rosa multiflora - - 0.3 0.1 - - - - -0.1
Prunus sargentii - 6.2 0.9 2.2 8.2 5.5 4.2 6.6 +4.4
Albizzia julibrissin - - - - - 1.1 - 0.4 +0.4
Lespedeza cyrtobotrya - - 1.5 0.3 - - - - -0.3
Lespedeza bicolor - - 0.4 0.1 - - - - -0.1
Pueraria thunbergiana - - - - - - 5.6 0.9 +0.9
Maackia amurensis - - - - - - 0.3 0.1 +0.1
Robinia pseudoacacia 63.1 41.6 8.4 46.8 52.7 24.4 8.6 35.9 -10.9
Euonymus fortunei var. radicans - - - - - - 0.6 0.1 +0.1
Ampelopsis heterophylla - - 0.6 0.1 - - - - -0.1
Parthenocissus tricuspidata - - 2.7 0.5 - - - - -0.5
Rhododendron mucronulatum - - 6.0 1.0 - 1.4 9.4 2.0 +1.0
Symplocos chinensis for. pilosa - 0.6 8.1 1.6 - - 1.1 0.2 -1.4
Styrax japonicus - - - - - 5.5 2.1 2.2 +2.2
Fraxinus rhynchophylla - - - - - - 0.7 0.1 +0.1
Callicarpa japonica - - 0.7 0.1 - - 0.3 0.1 -
Lonicera japonica - - 0.3 0.1 - - - - -0.1
Smilax china - - 12.7 2.1 - - 6.9 1.2 -0.9
Smilax sieboldii - - 2.4 0.4 - - 1.8 0.3 -0.1
C: importance percentage in canopy layer, U: importance percentage in understory layer, S: importance percentage in shrub layer, M: mean importance percentage.