• Journal of the Korean Institute of Landscape Architecture
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• v.16 no.1
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• pp.13-26
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• 1988

^x This study was executed to analyze the vegetational landscape structure of Donggu Royal Tomb forest by four kinds of ordination techniques(polar, principal component analysis, reciprocal averaging, and detrended correspondence analysis) and comparison of the couple photographs between 1920s and 1987. Thirteen sites were sampled with clumped sampling method in June of 1987 and five quadrats were examined in each site. The result of this study can be summarized as follows. 1. Environmental impact grade 3,4 and 5 area covered 16.11ha and these area should be restored by the input of human energy because self - refair seemed to be impossible. 2. Pinus densiflora community of actual vegetation covered 8.2%, Alnus japonica community 5.7% and quercus aliena community 15.8% of the surveyed area(73.3ha). And afforested vegetation including Pinus koraiensis, Pinus rigida, Alnus hirsuta and Robinia pseudoacacia covered 27.0%. 3. Donggu Royal Tomb forest was divided by Pinus densiflora, P. densiflora-Quercus aliena, Alnus japonia - Q. aliena and A. japonica community. DCA was the most effective method of this study. 4. DCA ordination were showed that succesional trends of tree species seem to be from Pinus densiflora through Prunus sargentii, Quercus serrata, Quercus aliena to Carpinus laxiflora in P. densiflora community and from Alnus japonica through Acer ginnala to Q. aliena in A. japonica community of the upper layer and from Rosa multiflora, Symplocos chinensis for. pilosa, Zanthoxylum schiniflolium through Rhus trichocarpa, Styrax japonica, Rhododendron scilippenbachii to Viburum erosum, Lindera obtusiloba in the middle layer. 5. By the comparsion of the couple photographs beween 1920s and 1987, we can recognize the change of historical landscape composed by P. densiflora and A. japonica community and those community is succeed to Q. aliena.

• Korean Journal of Medicinal Crop Science
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• v.12 no.1
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• pp.1-9
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• 2004

Prolyl endopeptidase (PEP) is proline-specific serine protease, cleaving peptide bonds on the biologically active neuropeptides such as substance P, vassopressin, and thyrotropin-releasing hormone and is, therefore, suggested to play important roles in learning and memory process. In this work, the inhibitory effect of plant extracts on PEP was investigated. Out of 200 plant extracts, Prunus mume, Pyrola. japonica, Hypericum ascyron, Astilbe chinensis var. typica, and Elaeagnus umbellata inhibited more than 90% of PEP activity at the concentration of 5 ppm.

• The Journal of Internal Korean Medicine
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• v.19 no.2
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• pp.300-316
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• 1998

The various oriental herbal medicines, which have usually been used for treatment of reducing fever, purging intense heat and detoxication, were screened to determine the antibacterial activity and the minimal inhibitory concentration against antibiotics-resistant Staphylococcus aureus. The results obtained were as follows: 1. Among the 23 oriental medicines tested, the water-soluble extract of Coptis japonica showed very excellent antibacterial activity against antibiotics-sensitive and -resistant S. aureus. A little activity was found in the extracts of Scutellaria baicalensis, Eriobotrya japonica and Prunus mume against antibiotics-sensitive S. aureus and in that extracts of P. mume, Schizandra chinensis and S. baicalensis against antibiotics-resistant S. aureus. When C japonica was used, the high antibacterial activity was shown against Bacillus subtilis and other extracts showed a little or no antibacterial activity against B. subtilis and E. coli as a control. 2. The highest antibacterial activities against antibiotics-resistant S. aureus were found in the ethanol-soluble extract of C japonica. Other ethanol-soluble extracts of S, baicalensis, S. chinensis and P. mume showed a little activity against both antibiotics-sensitive and antibiotics-resistant S. aureus. 3. Among the medicinal herbs tested, the water- and ethanol extracts of C. japonica showed very excellent antibacterial activity against the pathogenic S. aureus and both Escherichia coli and Bacillus subtilis used as a control. 4. When the water-soluble extracts of C. japonica and S. baicalensis, minimal inhibitory concentrations (MICs) against antibiotics-sensitive S. aureus were $20mg/m{\ell}\;and\;30mg/m{\ell}$, respectively. The MICs of the ethanol-soluble extracts of C. japonica and P. scabriosaefolia were $7.5mg/m{\ell}\;and\;12mg/m{\ell}$, respectively. 5. For the MICs against antibiotics-resistant S. aureus, the water-soluble extracts of C. japonica and P. mume showed $15mg/m{\ell}\;and\;10mg/m{\ell}$, respectively. The MICs of the ethanol-soluble extracts of C. japonica and P. mume were $13mg/m{\ell}\;and\;20mg/m{\ell}$, respectively. As a result, the highest antibacterial activity was found in both water- and ethanol-soluble extracts of C. japonica against antibiotics-resistant S. aureus. And the water- and ethanol-soluble extracts of S. baicalensis, S. chinensis and P. mume showed comparatively high antibacterial activities against both antibiotics-sensitive and -resistant S. aureus.

• Journal of the Korean Society of Environmental Restoration Technology
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• v.9 no.4
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• pp.13-23
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• 2006

The vascular plants of the studied area in the Mt. Bangjang was listed 422 taxa : 106 families, 299 genera, 372 species, 1 subspecies, 46 varieties and 3 forms. Based on the list of the rare plants by the Forest Research Institute, 5 taxa were recorded in the studied areas; Lilium distichum(Preservation priority order : No. 159), Tricyrtis dilatata (No. 97), Aristolochia contorta (No. 151), Prunus yedoensis (No. 110), Patrinia saniculaefolia (No. 122) and based on the list of Korean endemic plants, 9 taxa were recorded; Cephalotaxus koreana, Carex okamotoi, Populus tomentiglandulosa, Salix purpurea var. japonica, Prunus yedoensis, Forsythia koreana, Paulownia coreana, Weigela subsessilis, Patrinia saniculaefolia. Specific plant species by floral region were total 29 taxa; Prunus yedoensis in class V, 3 taxa(Acer palmatum, Asperula lasiantha, Lonicera subhispida ) in class III, 5 taxa(Lilium distichum, Potentilla dickinsii, Caryopteris incana, Patrinia saniculaefolia, Ligularia fischeri) in class II, 20 taxa(Ulmus parvifolia, Clematis patens, Aconitum jaluense, Ilex macropoda, Grewia biloba var. parviflora etc.) in class I. The naturalized plants in this site were 13 families, 31 genera, 36 species, 2 varieties, 38 taxa and naturalization rate was 9.0% of all 422 taxa vascular plants. Because of recent rapid increase of cars and people around here, analysis shows many naturalized plants and high naturalized ratio. And wild plants disturbing ecosystem like Ambrosia artemisiifolia var. elatior have been increasing. So, it needs continuing control and conservation measures on the plant ecosystem.

• Journal of Environmental Science International
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• v.16 no.10
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• pp.1139-1146
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• 2007

The vascular plants in the Mt. Manduk was listed 560 taxa composed of 110 families, 345 genera, 488 species, 1 subspecies, 67 varieties and 4 forms. Based on the list of the rare plants by the Forest Research Institute, 4 taxa were recorded in the studied areas; Lilium distichum (Preservation priority order; No. 159), Tricyrtis dilatata (No. 97), Aristolochia contorta (No. 151) and Prunus yedoensis (No. 110). Based on the list of Korean endemic plants, 12 taxa were recorded; Cephalotaxus koreana, Carex okamotoi, Lilium amabile, Populus tomentiglandulosa, Salix purpurea var. japonica, Pseudostellaria multiflora, Prunus yedoensis, Stewartia koreana, Forsythia koreana, Paulownia core ana, Weigela subsessilis and Aster koraiensis. Based on the list of approved for delivering overseas of plants, 7 taxa were recorded; Carex okamotoi, Lilium distichum, Aristolochia contorta, Vaccinium oldhami, Paulownia coreana, Asperula lasiantha and Saussurea seoulensis. Specific plants by floral region were total 32 taxa; Prunus yedoensis in class V, Wistaria floribunda in class IV, 5 taxa (Girardinia cuspidata, Spiraea salicifolia, Acer palmatum, Stewartia koreana, Asperula lasiantha) in class III, 3 taxa (Potentilla dickinsii, Viola tokubuchiana var. takedana and Caryopteris incana) in class II and 22 taxa (Pinus koraiensis, Hosta capitata, Chloranthus japonicus, Salix glandulosa, Juglans mandshurica, etc.) in class I. The naturalized plants in the surveyed sites were 14 families, 36 genera, 44 species, 2 varieties, 46 taxa and naturalization rate was 8.2% of all 560 taxa of vascular plants. Wild plants disturbing ecosystem like Ambrosia artemisiifolia var. elatior have been increasing. Therefore, continuous control and conservation measures are needed on the ecosystem of Mt. Manduk.

• Journal of the Korean Wood Science and Technology
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• v.14 no.4
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• pp.40-46
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• 1986

Change of color of woods is a trouble frequently found in decorative wood products. In this paper, studies were carried out on discoloation sensitivities of wood specimens to iron (0.1%, $FeCl_3{\cdot}6H_2O$), alkali (pH12.0, NaOH), acid (pH 1.0 $C_2H_2O_4$) and exposing to sunlight (40 hrs.). Four soft-woods and eleven hard-woods grown in Korea were used in this test. The results obtained were as follows: 1. In iron stain, strong discolored wood species were Larix leptolepis, Quercus mongolica. Zelkova serrata and Prunus yedoensis, and light discolored were Paulownia lomentosa and Pinus rigida. 2. In alkali stain. light discolored wood species were Abies holophylla, Kalopanax pictum, Populus ${\times}$ albaglandulosa, Acer mono, Pinus rigida, Pinus densiflora, Quercus mongolica, Betula platyphylla var. japonica, Prunus yedoensis, Zelkova serrata, Populus euramericana, Pinus koraiensis and Paulownia tomentosa, but there was no wood species of strong discolored compared with the color difference values of other reports. 3. In acid stain, light discolored wood species were Pinus rigida, Paulownia tomentosa. Pinus koraiensis, Quercus mongolica, Kalopanax piclum and Acer mone, but there was no strong discolored species compared with the color difference values of other reports. 4. In exposing to sunlight, strong discolored species were Larix leptolepis, Acer mono, Paulownia tomentosa, Populus euramericana, Pinus densijlora, Robinia pseudoacacia, Abies holophylla, Populus ${\times}$ albaglandulosa, Zelkova serrata, Prunus yedoensis and Pinus rigida, and light discolored was Alnus japonica. In general, it was shown that Korean wood species were susceptible to change of color by exposing to sunlight and iron stain compared with by alkali stain and acid stain.

• Korean Journal of Plant Resources
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• v.20 no.2
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• pp.133-144
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• 2007

The vascular plants at the Wolmyung Park was listed 479 taxa: 105 families, 317 genera, 417 species, 1 subspecies, 55 varieties and 6 forms. 479 taxa listed consists of 291 taxa of edible plants (60.8%), 335 taxa of medicinal plants (69.9%), 234 taxa of ornamental plants (48.9%) and 243 taxa of the others (50.7%). Based on the list of the rare plants by the Forest Research Institute, 4 taxa were recorded in the investigated areas; Aristolochia contorta (Preservation priority order, No. 151), Magnolia kobus (No. 187), Prunus yedoensis (No. 110), Berchemia racemesa (No. 67) and based on the list of Korean endemic plants, 9 taxa were recorded; Cephalotaxus koreana, Carex okamotoi, Populus tomentiglandulosa, Prunus yedoensis, Forsythia koreana, Asperula lasiantha, Weigela subsessilis, Adenophora triphylla var. hirsuta, Aster koraiensis. Specific plant species by floral region were total 31 taxa; Prunus yedoensis, Berchemia racemosa in class V, Magnolia kobus, Wistaria floribunda in class IV, 4 taxa (Spiraea salicifolia, Acer palmatum, Asperula lasiantha, etc.) in class III, Caryopteris incana in class II, 22 taxa (Clematis patens, Orixa japonica, Euscaphis japonica, Grewia biloba var. parviflora, etc.) in class I. The naturalized plants in this site were 14 families, 35 genera, 44 species, 2 varieties, 46 taxa and naturalization rate was 9.6% of all 479 taxa vascular plants.

• Journal of Korean Society of Forest Science
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• v.90 no.6
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• pp.756-766
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• 2001

A phytosociological study on the community structure was carried out in the evergreen broad-leaved forests around Baegunbong area in Wando from June to August, 2000. A total of 31 plots, the size of which was $10m{\times}30m$, were set up in the study area. Cluster analysis for the total 54 tree species appearing in the 31 plots, showed that forest community cloud be classified into 5 groups, such as : Quercus acuta community, Quercus acuta-Camellia japonica community, Quercus acuta-Deciduous broad-leaved tree species community, Quercus acuta-Evergreen Deciduous broad-leaved tree species community, Quereus acuta-Carpinus tschonoskii community. The species of high appearance frequency ratio in 31 plots were Quercus acuta, Camellia japonica, Styrax japonica, Eurya japonica, Ligustrum japonicum, Cinnamomum japonicum, Sapium japonicum and Acer psuedo-sieboldianum. Dominant tree species were covered with Quercus acuta, Styrax japonica, Prunus sargentii, Carpinus laxiflora and Quercus serrata, and Quercus acuta, Camellia japonica, Eurya japonica, Ligustrum japonicum, Cinnamomum japonicum and Sapium japonicum at sub-canopy. The forest vegetation in the surveyed area except the summit of Baegunbong will be proceeding with Quercus acuta community. The species diversity of Quercus acuta community, Quercus acuta-Camellia japonica community, Quercus acuta-Deciduous broad-leaved tree species community, Quercus acuta-Evergreen Deciduous broad-leaved tree species community, and Quercus acuta-Carpinus tschonoskii community were 0.687, 0.866, 0.933, 0.966, and 1.018, respectively. The species diversity of Quercus acuta community was rather low.

• Korean Journal of Plant Taxonomy
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• v.35 no.2
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• pp.81-98
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• 2005

Leaf morphology was examined for Prunus species from Jeju Island. Analyzed were the leaf blade length, petiole length, width of blade, number of veins and angle of the base to the mid-vein as quantitative characters and the distribution of trichome, position of glandsand leaf features qualitative characters. A total of 25 OTU were phenetically analyzed by UPGMA. The resuling phenograms slightly differ from the currently recognized taxonomic system in two points. Prunus mume was clustered with P. padus and P. buergeriana. Prunu spendula and P. yedoensis were separated from the cluster of P. jaamasakura, P. speciosa, P. sargentii and P. jamasakura var. quelpaertensis. Except for the members of subgenus Cerasus, subgenera Padus (P. buergeriana and P. padus), Microcerasus (P. japonica) and Amygdalus were well defined. Some morphological characters of leaves such as the ratio of blade length to width, the length of blade to petiole, number of veins, the distance between the gland and base, the angle of base to mid-vein, and the distribution of trichome were useful as diagnostic features for Prunus from Jeju Island.

• Journal of the Korean Society of Environmental Restoration Technology
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• v.12 no.1
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• pp.101-110
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• 2009

The vascular plants in the Mt. Hoemun were listed 541 taxa composed of 113 families, 354 genera, 473 species, 1 subspecies, 64 varieties and 3 forms. Divided into 541 taxa; woody plants were 151 taxa (27.9%) and herbaceous plants were 390 taxa (72.1%). Based on the list of rare plants by the Korea Forest Service, 10 taxa were recorded in the studied areas; Lilium distichum (Preservation priority order: No. 159), Lilium callosum (No. 191), Tricyrtis dilatata (No. 97), Iris ensata var. sponianea (No. 197), Gastrodia elata (No.9), Aristolochia contorta (No. 151), Paeonia obovata (No. 30: Legal protection species), Prunus yedoensis (No. 110 : Planted species), Viola albida (No. 202), Schpolia japonica (No. 208). Based on the list of Korean endemic plants, 15 taxa were recorded; Cephalotaxus koreana, Lilium amabile, Salix purpurea var. japonica, Pseudostellaria multiflora, Aconitum pseudolaeve var. erectum, Filipendula glaberrima, Weigela subsessilis, etc. Based on the list of approved for delivering overseas of plants, 10 taxa were recorded; Carex okamotoi, Lilium distichum, Clematis trichotoma, Vaccinium oldhami, Paulownia coreana, Asperula lasiantha; etc. Specific plant species by floral region were total 4S taxa (8.3% of all 541 taxa of vascular plants); Gastrodia elata, Paeonia obovata in class V, Carex arenicola, Corydalis grandicalyx in class IV, 5 taxa (Spiraea salicifolia, Schpolia japonica, Asperula lasiantha, etc.) in class III, 7 taxa (Lilium distichum, Iris ensata var. spontanea, Caryopteris incana, etc.) in class II and 28 taxa (Camptosorus sibiricus, Orixa japonica, Lonicera praeflorens, etc.) in class I. The naturalized plants in the surveyed sites were 13 families, 38 genera, 43 species, 2 varieties, 45 taxa (Phleum pratense, Medicago sativa, Sonchus asper, etc.) and naturalization rate was 8.3% of all 541 taxa of vascular plants. Ambrosia artemisiifolia var. elatior an ecosystem disturbing wild plants have been increasing. Therefore, the counter plants for continuous control and conservation are needed on the ecosystem of Mt. Hoemun.