The purpose of this study was to provide the basic information on the ecological forest management. Vegetation data was collected in Janggunbong, Bonghwa-Gun, from July in 2014 to October in 2016. The study was analyzed community type classification according to species composition and physiognomy dominant species of 193 quadrates.
In natural forest area, the vegetation type according to physiognomy dominant species was classified Quercus mongolica community, Pinus densiflora community, Quercus variabilis community, Betula schmidtii community and Tillia amurensis community. The vegetation type according to species composition was classified into 7 vegetation units; The forest vegetation was classified into 7 vegetation units, when it comes to a community group, they are classified into the Quercus mongolica community group. As for community, The Quercus mongolica community group is classified into the Acer pictum subsp. mono community, Pinus koraiensis community, Quercus variabilis community. As for group, The Acer pictum subsp. mono community is classified into Lychnis cognata group and Deutzia glabrata group. The Pinus koraiensis community is classified into Acer komarovii group and Pinus koraiensis typical group. The Quercus variabilis community is classified into Parthenocissus tricuspidata group and Quercus variabilis typical group. As for subgroup, The Parthenocissus tricuspidata group is classified into Parthenocissus tricuspidata typical subgroup and Salix caprea subgroup.
In Artificial forest area, the vegetation type according to physiognomy dominant species was classified Larix kaempferi community, Pinus densiflora community, Pinus koraiensis community, Betula platyphylla var. japonica community, Fraxinus rhynchophylla community, Prunus verecunda community, Prunus maackii community, Betula davurica community, Betula schmidtii community, Quercus mongolica community, Acer tataricum subsp. ginnala community and Robinia pseudoacacia community. The vegetation type according to species composition was classified into 7 vegetation units; The forest vegetation was classified into 7 vegetation units, when it comes to a community group, they are classified into the Quercus mongolica community group. As for community, The Quercus mongolica community group is classified into the Prunus maakii community, Corylus sieboldiana var. mandshurica community, Pinus densiflora community, Morus bombycis community, Veratrum maackii var. japonicum community. As for group, The Pinus densiflora community is classified into Quercus variabilis group and Betula schmidtii group. The Morus bombycis community is classified into Hydrangea serrata f. acuminata group and Rubus hirsutus group.
As a result of analyzing the importance value according to shade tolerance, shade intolerant species and mid shade tolerant species showed high values in all layers. The stand of Mt. Janggungbong showed to reach mid shade tolerant species. However, Mt. Janggunbong has effected by continuous disturbance. It might accelerate the succession of shade intolerant species and mid shade tolerant species. Therefore, It is necessary to study the progress of succession through continuous monitoring.
As a result of the importance value according to life form, vine plants showed higher importance value of artificial forest than that of natural forest. The vine plants are generally shade intolerant species, the photosynthesis increases according to the light intensity increases, and the adaptation to temperature is very broad compared to other plants. And, the artificial forests consisted of simple structure and it is higher solar irradiance than natural forest. The vine plant appeared by high solar irradiance in artificial forest. Vine plants damaged to the timber and it has given rise to wind damage, snow damage, disease and insect pest. Thus, it was needed thinning plan according to the type of vine plants.
Species diversity of artificial forest was higher than natural forest. The artificial forest by disturbances include thinning, pruning, etc. has highly solar irradiance. Immigration and settle plants increased by high solar irradiance, and it represented higher species diversity than natural forest.
Rare species categorized by Korean Forest Service. It investigated for 8 taxa Korean rare species, 1 taxa of critical endangered(CR), 2 taxa of endangered species(EN), 3 taxa of vulnerable(VU) and 2 taxa of least concerned(LC). Rare plants species is important in ecological aspects. The study area under constant disturbance exposed to danger by damaged populations. Thus, it is necessary to manage plans and monitor continuously.