• 한국환경복원기술학회지
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• 제11권4호
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• pp.37-45
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• 2008

The vascular plants of the studied area in Nonsan economical forest growing site appeared to be 341 taxa; 81 families, 218 genera, 290 species, 1 subspecies, 42 varieties and 9 forms. Based on the list of Korean endemic plants, 5 taxa existed; Cephalotaxus koreana, Thalictrum actaefolium, Asperula lasiantha, Populus tomentiglandulosa (Planted species), Paulownia coreana (Planted species). Specific plant species by floral region were total 13 taxa; Cirsium setidens in class III, Potentilla dickinsii in class II, Cephalotaxus koreana, Pinus koraiensis (Planted species), Hosta capitata, Juglans mandshurica, Alnus hirsuta, Quercus variabilis, Ulmus parvifolia, Dictamnus dasycarpus, Gwenia biloba var. parviflora, Vaccinium oldhami, Trigonotis icumae in class I. The naturalized plants in this site were 9 families, 19 genera, 20 species, 1 varieties, 21 taxa and naturalization rate was 6.1% of all 341 taxa vascular plants. The communities were classified into Quercus acutissima community, Pinus densiflora community, Quercus variabilis community, Platycarya strobilacea community, Quercus aliena community of natural forests and Pinus rigida community, Metasequoia glyptostroboides community, Larix leptolepis community of artificial forests.

• 생약학회지
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• 제44권3호
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• pp.298-304
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• 2013

In this study, 64 Korean herbal medicines have been investigated with an in vitro evaluation systems using glycation end products (AGEs) formation inhibitory activity. Of these, 30 herbal medicines ($IC_{50}<50{\mu}g/ml$) were found to have significant AGEs formation inhibitory activity. Of these, four herbal medicines ($IC_{50}<5{\mu}g/ml$) were found to have significant AGEs formation inhibitory activity. Particularly, Cornus controversa (branches and leaves), Acer ginnala (stems and leaves), Platycarya strobilacea (flowers) and Picrasma quassioides (stems), showed more potent inhibitory activity (approximately 17-27 fold) than the positive control aminoguanidine ($IC_{50}=77.04{\mu}g/ml$).

• 한국자원식물학회지
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• 제21권3호
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• pp.216-221
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• 2008

The Purpose of this study was to offer the raw data for drawing up the conservation plan by analysing natural vegetation in Midongsan, Chungcheongbuk-do, Korea. The period of survey was from July to October, 2004 and the size of plot was 100$m^2$. In the results of analyzing the physical environments, the range of altitude was 303${\sim}$550m and soil pH was 5.4${\sim}$6.8. The angle of slope was 3${\sim}$57% and topographical factor was composed of ridgeline. In the results of analyzing a importance percentage, the dominant species in tree layer, Pinus rigida, P. densiflora, Quercus mongolica, Q. variabilis and Q. acutissima, P. rigida, Q. mongolica, Q. acutissima, Platycarya strobilacea and Q. variabilis in subtree layer, Rhododendron mucronulatum, Symplocos chinensis for pilosa, Lindera obtusiloba, L. erythrocarpa, Rhus trichocarpa and Weigela subsessilis in shrub layer. In the results of species diversity index, species diversity (H') was from 1.2401 to 2.5540, maximum species diversity (H'max), from 1.9459 to 2.8904, evenness (J'), from 0.5644 to 0.8836, dominance (D), from 0.1164 to 0.4356.

• Horticulture, Environment, and Biotechnology : HEB
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• 제59권6호
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• pp.899-907
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• 2018

The methanol extracts of flowers obtained from 67 plant species were screened for their inhibitory activity on aldose reductase (AR). Alnus japonica, Aster spathulifolius, Chionanthus retusus, Morus bombycis, Crysanthemum boreale, Persicaria tinctoria, Platycarya strobilacea, and Serratula coronata var. insularis exhibited potent aldose reductase inhibitory (ARI) activity. HPLC-UV analysis of quercetin, an AR inhibitory flavonoid, was performed on extracts showing strong ARI activity. Quercetin was detected in C. retusus, C. boreale, P. tinctoria, and S. coronata var. insularis at concentrations of 1.33, 1.56, 0.82, and $3.37mg\;g^{-1}$ extract, respectively, indicating that quercetin contributed to the ARI activity of these extracts. In the samples in which quercetin was absent, other compounds may be responsible for their potent ARI activity. These results serve as a basis for further studies regarding the bioactive components responsible for the inhibitory effects of various flower extracts on AR activity.

• 한국환경복원기술학회지
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• 제24권6호
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• pp.15-34
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• 2021

Syntaxonomy and Synecology on Quercus variabilis forests in Daecheong-dam basin was carried out using the methods of Braun-Blanquet phytosociology. 6 syntaxa classified as species compositions described were Quercus variabilis community, Platycarya strobilacea-Quercus variabilis community(typicum subcommunity, dictamnus dasycarpus subcommunity), Quercetum variabili-serratae, Zelkova serrata-Quercus variabilis community and Dendranthema boreale-Quercus variabilis community. All syntaxa were shown habitat environmental conditions including steep inclination of more than 30°, high rock exposure rate of more than 50% and South-facing slope. These communities excepting Dendranthema boreale-Quercus variabilis community classified as natural vegetation were identified as low emergence rate of annual plants and species compositions composed native species, so it was confirmed that relatively natural succession were proceeding well. Quercetum variabili-serratae and Dendranthema boreale-Quercus variabilis community distributed forested hillslope of open water edge were representative Quercus variabilis syntaxa in Daecheong-dam basin.

• 보존과학연구
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• 통권25호
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• pp.197-226
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• 2004

This study was made to identify species of archaeological wood products excavated from three sites(Kwunbuk-ni, Gungnamgi, Wanggung-ni) of Sabi Era, Baekje. These sitesare presumably considered as capital areas of Sabi Era, Baekje. Total of 220 specimens were identified into five softwoods and eighteen hardwoods. Pinus densiflora(or Pinusthunbergii) and Quercus spp. are the most common and occupied 32%, 28% of totalspecimen, respectively. The others are follows : Torreya nucifera(1%), Abiesholophylla(3%), Cryptomeria japonica(4%), Thuja spp.(2%), Chamaecyparisobutusa(2%), Salix spp.(1%), Platycarya strobilacea (3%), Alnus spp.(1%), Carpinusspp.(0.5%), Castanea crenata(9%), Zelkova serrata (6%), Celtis spp.(0.5%), Prunusspp.(2%), Rhus verniciflua(1%), Rhus trichocarpa(0.5%), Meliosma oldhamii(1%),Hovenia dulcis(1%), Kalopanax pictus(0.5%), Cornus walteri(0.5%), Styrax japonica(1%),Fraxinus rhynchophylla (0.5%), F. sieboldiana(1%).Most of the identified species have been growing in this area until nowadays. However,a few species(Cryptomeria japonica, Thuja spp. Chamaecyparis obutusa, Torreyanucifera) didn’t grow natively around this area at that time. Two species(Cryptomeriajaponica, Chamaecyparis obutusa) are endemic species of Japan, indicating international trade or exchange of woods between Baekje Kingdom and Japan in 6-7th century. Torreyanucifera grows in limited areas in Korea (south of $35^{\circ}$10′N), however, is widely distributed in the southern Japan. Quercus spp. was identified the most in implements of Baekje and Pinus densiflora(orPinus thunbergii) was in the second place. Zelkova serrata was mainly used for raw materials of turnery products, e.g., wooden container. This species produces one of the hardest woods as 0.7 in specific gravity. It indicates that iron technologies have reached some high level in Sabi Era, Beakje.

• 농업과학연구
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• 제24권1호
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• pp.11-15
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• 1997

태안해안(泰安海岸) 국립공원(國立公園) 지역의 곰솔나무림의 생태적인 특징을 밝히기 위하여 1996년 7월부터 9월 사이에 $relev{\acute{e}}$ method에 의하여 33개소를 선정하고 $10m{\times}10m$의 방형구를 설치하여 분석한 결과는 다음과 같다. 1 본 지역에서 중요치(重要値)가 높은 종(種)은 곰솔, 떡갈나무, 아까시나무, 굴피나무, 소사나무, 자귀나무, 중공솔, 졸참나무 등(等)의 순(順)이다. 2. 곰솔의 재적 성장률은 0.6%~10.5%로 평균 3.8%이었다. 3 토양의 화학적 특성은 pH는 4.8~6.3, 유기물함량은 1.51~11.79%, 유효인산은 2.5~14.5ppm, 치환성 Ca, Mg, K는 각각 1.3~6.6, 0.4~2.6, 0.23~1.89(me/100g)이다.

• 한국환경과학회지
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• 제6권2호
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• pp.165-171
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• 1997

The floristic characteristics and ecological conservation measures for the plant resources of the Mt. Kumjung(801m), Pusan, Korea were discussed. The field works was done for about twenty times in nine major areas from March, 1995 to Octover, 1996. The total number of vascular plants In this area were summarized as 103 families, 312 genera, 493 species and 564 kinds. The fourteen kinds of artificially planted, ten kinds of Korean endemics and twenty-nine kinds of Korean rare and endangered species in the area were revised and compiled in the list. The flora of the area were categorized into the South-coast put of the Korean Region, where the species such as Platycarya strobilacea, Quercug serrata, Eutya japonica, Camellia japonica, Trachelosperm urn asia talcum vu . in termedium, Quercus acu tissima were roles as major floristic components in the Korean Region and endemized in the south-cosat part of Korea. The natural communities such as Pinus thunbergii Community, Quercus mongolica community, Cupinus laxiflora Community, Wistria floribunda Community and swamp vegetation in Bukmun area as well as upland grassland at the summit of Kodangpong were represented for their floristic values in the area. The thirty kinds of medichinal plant, fifteen kinds of ornamental plants and thirteen kinds of edible plants are faced potentially in endangered from the outrageous collections by the local peoples. The action plan for the conservation management of the area which enables sustainable use by the local peoples must have established in the near feature.

• 한국환경복원기술학회지
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• 제23권3호
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• pp.45-62
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• 2020

This study is to present the basic data for the conservation and management of natural resources of National Park by understanding the ecological characteristics of special protected areas located in Tohamsan District, Gyeongju National Park, South Korea. The numbers of vascular plants were summarized as 106 taxa including 47 families, 79 genera, 96 species, 1 subspecies, 7 varieties and 2 forms. For status by sites, there were 59, 50 and 55 taxa in A area(Pedicularis ishidoyana), B area(Millettia japonica) and C area(Cypripedium macranthos), respectively. In the dominant species, the tree layer was Quercus serrata(A area), Platycarya strobilacea and Pinus koraiensis(B area) and Fraxinus rhynchophylla(C area), the subtree layer was Carpinus cordata and Quercus serrata(A area), Pinus koraiensis and Castanea crenata(B area) and Fraxinus rhynchophylla(C area), the 1^st shrub layer was Toxicodendron trichocarpum and Rhododendron schlippenbachii(A area), Lindera erythrocarpa and Styrax japonicus(B area) and Fraxinus rhynchophylla and Lindera erythrocarpa(C area), 2^nd shrub layer was Styrax obassis and Lespedeza maximowiczii(A area), Lespedeza maximowiczii and Rhododendron mucronulatum(B area) and Lindera erythrocarpa(C area), the herbaceous layer was Athyrium yokoscense, Dryopteris chinensis, Dryopteris lacera and Lindera obtusiloba(A area), Athyrium yokoscense, Millettia japonica, Carex humilis Leyss. var. nana and Carex ciliato-marginata(B area) and Hydrangea macrophylla (Thunb.) Ser. subsp. serrata, Ajuga spectabilis and Oplismenus undulatifolius(C area).

• 생약학회지
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• 제42권4호
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• pp.379-385
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• 2011

Indoleamine 2,3-dioxygenase (IDO) is predicted to be therapeutic target for treatment of cancer and immune disease. Thus, we examined methanol extracts prepared from 156 Korean local plants for their inhibitory effects on IDO in vitro. Among them sixteen extracts showed more than 50% inhibition of IDO activity at the concentration of 30 ${\mu}g/ml$. Especially, the extracts of Platycarya strobilacea, Quercus acutissima, Acer ginnala and Alnus japonica were most potent because their $IC_{50}$ value were 6.5, 8.1, 3.9 and 4.2 ${\mu}g/ml$, respectively.