• Korean Journal of Medicinal Crop Science
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• v.11 no.2
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• pp.127-134
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• 2003

One hundred sixty species among Korean medicinal plants were tested on their antioxidative potentials. Antioxidants are useful materials which could be expected into development as food preservatives, health foods, cosmetics and drugs. Korean peninsula have many potential in antioxidant source which includes various medicinal herbs. It grounded on the fact that Korean medicinal plants have been used as folk therapy for long time and still do in oriental medicine. From the study, effective free radical scavengers compared with ${\alpha}-tocopherol\;of\;13.5{\mu}g/ml\;in\;RC_{50}$ were Geranium sibiricum, Geum japonicum, Geranium nepalense subsp. thunbergii and Paulownia coreana which showed $19.3{\mu}g/ml,\;22.5{\mu}g/ml,\;23.9{\mu}g/ml,\;and\;27.2{\mu}g/ml$, respectively, Acer mono and 38 plants showed strong potential in inhibition rate on linoleic acid oxidation (above 90%). In conclusion, we expect that the selected medicinal plants must be more studied as antioxidant and then developed as many industrial materials.

• Korean Journal of Plant Resources
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• v.34 no.1
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• pp.103-113
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• 2021

This study was investigated to find out the distribution of flora and remarkable plants and factors and management measures for influx of wild disturbed plants in the Damyang area of Mudeungsan National Park. The field survey was carried out 8 times from May 2019 to October 2020. First of all, in the Damyang area of Mudeungsan National Park, a total of 603 taxa in 107 families, 349 genera, 531 species, 57 varieties, 5 subspecies and 10 forms. This result was found to be about 12.33% of the total 4,881 taxa of vascular plants in Korea. In addition, Rare plants were classified as 15 taxa. Floristic special and Korean endemic plants were identified as 85 taxa and 13 taxa, respectively. Lastly, the naturalized plants that appeared in the Damyang area of Mudeungsan National Park were observed in 45 taxa with 45 species of 16 families and 36 genera. Moreover the naturalization rate was 7.46% and the urbanization index was calculated to be 14.01%. The wild disturbed plants were found in a total of 4 taxa. Especially, a sheep sorrel(Rumex acetosella) was focused on managing for physica and biological control at Sinseondae Eoksaepyungjeon.

• Korean Journal of Environment and Ecology
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• v.19 no.2
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• pp.75-82
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• 2005

To investigate the vegetation structure of the region from Dongchanggyo to Deogjusa in Woraksan National Park, 23 plots$(400m^2)$ set up with random sampling method were surveyed. Three groups Quercus mongolica-pinus densiflora community, Pinus densiflora-Quercus molica community, Mixed Broad-leaved community were classified by cluster analysis. Quercus mongolica, pinus densiflora, Quercus serrata and Fraxinus rhynchophyllai were found as a major woody plant species in Woraksan National Park region. In this area, Quercus mongolica and Pinus densiflora were dominated partially. In the future, the importance percentage of Pinus densiflora might be decreased, but those of Quercus mongolica, Quercus serrata and Fraxinus rhynchophyllai might be increased. High positive correlations were proved between Acer pic tum and Corylus heterophylla, Betula schimidtii; Acer pseudosieboldianum, Cornus controversa ; Stephanandra incisa and Symplocos sawafutagi, Lespedeza maximowixzii ; Symplocos sawafutagi and Fraxinus rhynchophyllai, Lespedeza maximowixzii; Fraxinus rhynchophyllai and Acer pseudosieboldianum, Lespedeza maximowixzii; Quercus variabilis and Fraxinus sieboldiana; Corylus heterophylla, and Rhododendron schlippenbachii; Acer pseudo sieboldianum and Lespedeza maximowixzii, and relatively high negative corrlations was proved between Quercus serrata and Betula schimidtii; Quercus mongolica and Quercus serrata; Corylus heterophylla and Lindera erythrocarpa. Species diversity(H') of investigated groups were ranged from $1.2393\~1.3674$ and it was relatively high compared to those of the ridge area of other national parks.

• Korean Journal of Environmental Biology
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• v.27 no.3
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• pp.314-322
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• 2009

Vegetation, environmental characteristics and soil analysis of Megaleranthis saniculifolia Ohwi habitats were investigated to propose the basal data for conservation and restoration. M. saniculifolia was distributed around an altitude of 770~1,440 m with an inclination of $0{\sim}20^{\circ}$, and mostly formed discontinuous populations in northern part of valley. The vascular plants from 78 quadrates of 11 habitats were identified 111 taxa. Importance value of M. saniculifolia was 27.05%, and highly ranked 5 species such as Veratrum oxysepalum (5.67%), Corydalis turtschaninovii (5.32%), Aruncus dioicus var. kamtschaticus (4.35%), Meehania urticifolia (4.06%) and Anemone koraiensis (3.91%) were considered to be an affinity with M. saniculifolia. Dominant species of woody plants in 78 quadrates were represented as Cornus controversa, Juglans mandshurica, Quercus mongolica, Acer pseudo-sieboldianum and A. mono in tree (B1) layer, A. pseudo-sieboldianum and Carpinus cordata in subtree (B2) layer, Deutzia glabrata and Prunus padus in shrub (S) layer. Average species diversity was 1.16, and dominance and evenness were found to be 0.12 and 0.81, respectively. Average field capacity was 26.41%, and the organic matter and soil pH were 7.83% and 5.83. Correlation coefficients based on environmental factors, vegetation and soil analysis were showed that the positive correlations between slope degrees and pH, slope degrees and organic matter, dominance and importance value, species diversity and richness, whereas between species diversity and dominance, and importance value and dominance were showed negative correlations.

• Korean Journal of Environment and Ecology
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• v.25 no.6
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• pp.819-827
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• 2011

Climate change is recognised as the best serious environmental problem in recent time, and high alpine or high latitudinal organisms especially endangered by its change. Leontice microrhyncha is recorded one of the endangered species by the Ministry of Environment Korea. We surveyed ten L. microrhyncha populations distributed at Taebaek Mountains, high mountain area in Kangwon province. L. microrhyncha is distributed 940m~1350m high altitude which equivalent of Warmth Index $53^{\circ}C{\cdot}month$ to $75^{\circ}C{\cdot}month$, the range of conspicuous cool temperate forest zone. The plant species distributed at slope of $5^{\circ}{\sim}23^{\circ}$ on northeast slopes. The vegetation structure at tree layer of L. microrhyncha distribution area is dominated by Quercus mongolica, Betula costata, Cornus controversa, Acer mono in tree layer, and by Staphylea bumalda, Deutzia glabrata, Stephanandra incisa in shrub layer. The species diversity of herb layer of each L. microrhyncha population showed from 0.21 to 0.98, and the importance value of L. microrhyncha in each population was the highest at blooming time of L. microrhyncha. These results will provide the basic information for the development of conservation strategies for this endangered species.

• Korean Journal of Environment and Ecology
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• v.22 no.4
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• pp.356-395
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• 2008

The flora and vegatation of the Southwest Chuncheon area were investigated from March, 2006 to September, 2007. The vascular plants were summarized as 914 taxa; 111 families, 448 genera, 766 species, 2 subspecies, 119 varieties, and 27 forma. Among the investigated 914 taxa, 33 Korean endemic, four endangered, and 26 rare plants were included. Based on the list of the species of specially designated plants by the Ministry of Environment, 152 taxa were recorded in the investigated area. The naturalized plants were 46 taxa, and life form spectra was H-R5-D1-e type. 914 taxa listed consists of 308 taxa(33.7%) of edible plants, 276 taxa(30.2%) of medicinal plants, 148 taxa(16.2%) of pasture plants, 127 taxa(13.9%) of ornamental plants, 36 taxa(3.9%) of timber plants, 25 taxa(2.7%) of fiber plants and 4 taxa(0.4%) of industrial plants. The vegetation of Southwest Chuncheon area were classified five communities as Betula costata-Acer mono, Quercus mongolica, Quercus mongolica-Quercus variabilis, Quercus mongolica-Quercus dentata, and Pinus densiflora.

• Korean Journal of Plant Resources
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• v.12 no.2
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• pp.125-132
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• 1999

This study has investigated the growing features and vegetation of Acanthopanax chiisanensis and Acanthopanax koreanum in Mt. Jiri and Halla from Sep. 1997 to Aug. 1998. As to Acanthopanax chiisanensis, it occupied surrounding areas of Nogodan in Mt. Jiri of the height of 1,507m, ImgeolyoungJae of 1,300m and the Mt. Halla. of 1,100m of There were rather high constancy degree with Quercus mongolica, Schizandra chinensis, Hydrangen serrate for. acuminata, Acer pseudo-sieboldianum, Dryopteris crassirhizoma, Actaea asiatica, Thalictrum filamentosum, Abies koreana, Arundinella hirta from the sorts. The common species in Mt. Jiri and Halla are Acer pseudo-sieboldianum, Dryopteris crassirhizoma, Callicarpa japonica, Parthenocissus tricuspidata, Acer mono, Ligularia fischeri, Disporum smilacinum, Viola acuminata Aconitum kusnezofii. On the other hand, concerning of Acanthopanax koreanum community, it possessed the small areas of wedo weoltae village in Chejudo. In this area, a liana e.g. Dioscorea tenuipes, Hedera rhombea, Lygodium japonicum, Akebia quinata, Vitis thunbergii, Dunbaria villosa, Trachelospermum asiaticum var. intermedium, Vitis amurensis, Paederia scandens, lives with Pinux thunbergii, Celtis aurantiaca, Mallotus japonicus and so forth in tree layer and subtree layer. There is artificial change no move in the researching sites, Acanthopanax chiixanensis will be transformed into Abies koreana - Acanthopanax chiisanensis community. Soil characteristics showed the high value such as pH 6.56 and conductivity 0.258mmho/cm in Acanthopanax koreanum community of Mt. Jiri, they also indicated digit as follows: the content of organic matter and total nitrogen are from 25.16 through 25.35% and 7.58 through 9.30mg/g respectably. The soil characteristics at Acanthopanax chiisanensis community in Mt. Jiri and Halla, was high as like pH 5.76, conductivity 0.238mmho/cm, total nitrogen 9.30mg/g, total phosphorus 0.126mg/g in Mt. Halla.

• Korean Journal of Plant Resources
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• v.30 no.4
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• pp.378-398
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• 2017

Mt. Deoktaesan(1,113 m) is located in Jinan-gun Baekun-myon and Jangsu-gun Chunchun-myon. Investigated area was decided to include Mt. Deoktaesan, Mt. Seongaksan and its neighbor area, and this study was conducted from March to October, 2015 in 12 days. Based on the voucher, vascular plants in Mt. Deoktaesan were 108 families 341 genera 525 species 4 subspecies 64 varieties 14 forms, totally 607 taxa, which is 12.4% of total Korean flora. Korean endemic plants were 15 species. Among these species, Populus tomentiglandulosa T.B.Lee, Campanula takesimana Nakai and Forsythia koreana (Rehder) Nakai are verified as planted species. Rare and endangered plants of designated by Korea Forest Service were 10 taxa, such as Peucedanum hakuunense Nakai, Paeonia japonica (Makino) Miyabe & Takeda, Koelreuteria paniculata Laxmann, Eranthis stellata Maxim., Eranthis stellata Maxim., Viola albida Palib., Chionanthus retusus Lindl. & Paxton, Campanula takesimana Nakai, Tricyrtis macropoda Miq. and Iris ensata var. spontanea (Makino) Nakai, respectively. Phytogeographical special plants were totally 41 taxa, which were grade 17 taxa of garde I, 12 taxa of grade II, 12 taxa of grade III, 8 taxa of grade IV, and 1 taxon of grade V.

• Journal of agriculture & life science
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• v.46 no.4
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• pp.21-30
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• 2012

The objective of this study was to comprehend inter-species association and factors affecting species composition by factor analysis and to classify forest types of natural forests in Dootasan. We examined the correlation (positive or negative) of the major species by correlation analysis, the selection of three factors affecting the species composition by factor analysis, cluster analysis on the basis of factor scores, and the evaluation of the results of forest type classification by ANOVA. The outputs of correlation analysis were closely associated with those of factor analysis. The first factor affecting species composition was found to be the decline phenomenon of Pinus densiflora during forest succession process. The second and third factors were growth environments in valley and slope, respectively. The cluster analysis was carried out based on three factors affecting the species composition. The results indicated that the study area was classified into four forest types as follows: Quercus mogolica-Acer mono-Fraxinus rhynchophylla community, Q. mongolica community, Q. mongolica-Tilia amunrensis community and Pinus densiflora community. The dominant species of each community in the four classified forest types were significantly different (p<0.05).

• Journal of agriculture & life science
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• v.46 no.3
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• pp.19-26
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• 2012

The purpose of this study was to provide basic data for the cultivation of Allium victorialis var. platyphyllum in the area covered with forest vegetation. The populations of A. victorialis var. platyphyllum in Ulleungdo were naturally growing in the communities of Fagus japonica var. multinervis, Acer okamotoanum, Pinus parviflora, Tsuga sieboldii, Pinus densiflora, Pinus thunbergii, Tilia amurensis, and Alnus maximowiczii. On average, the study area of A. victorialis var. platyphyllum population was located in the places of 563 m above sea level, and in the slope area of $27.8^{\circ}$. Soil texture of its inhabitation site mainly consisted of sandy soil, sandy loam, loamy sand, and loam. The depth of the organic layer was 6 cm on average, soil pH 5.4, available phosphate content 18.5 ppm, and cation exchange capacity $18.6cmol_c/kg$. The correlation between the site factors and soil factors by CCA analysis showed that the community of beech tree indicated positive correlation with carbon, nitrogen, sand content, and cation exchange capacity.