• Korean Journal of Plant Resources
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• v.33 no.2
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• pp.93-105
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• 2020

The study was investigated in vegetation and environmental factors of Thuja koraiensis habitats where provided for ecological evidence data for conservation and management. Study plots were located at altitudes of 1,000~1,588 m with inclinations of 10~30°. A total of 150 taxa was identified 22 quadrates in 6 study sites. The highest basal area was analyzed in Mt. Gariwangsan 49.98 ㎡/㏊ with the lowest Mt. Hwaaksan 3.46 ㎡/㏊. Thuja koraiensis forest was classified into two communities; Abeis nephrolepis-Taxus cuspidata community, Betula ermanii-Thuja koraiensis community. As a result of Multi-Response Permutation Procedures test, there was significant difference among the communities.

• Korean Journal of Environment and Ecology
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• v.10 no.2
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• pp.240-250
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• 1997

To investigate the structure and the conservation strategy of natural forest at Soch'ongbong-Taech'ongbong Area in Soraksan , 36 plots (20m*20) set up with random sampling method. Three groups - Quercus mongolica- Abies holophylla community, Acer mandshuricum- Abies nebhrolepis community, Abies holophylla-Ulmus laciniata-were classified by cluster analysis. High positive correlations were proved between Ulmus laciniata and Carpinus cordata; Tripterygium regelii and Syringa reticulata var. mandshurica ; Tripterygium regelii and Rhodo- dendron brachycarpum ; Carpinus cordata and Rhododenron mucronulatm; Wergela subsessilis and Rhododenron nucronulatum and High negative correlations were proved between Rhododen- dron schippenbachii and Euonymus macroptera; Betula ermani and Acer pseudo-sieboldianum, Tilia amurensis, Magnolia sieboldii, Betula costata ; Pinus pumila and Pinus koraiensis. Species diversity(H') of investigated area was calculated 0.8393~1.3431.

• Korean Journal of Environment and Ecology
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• v.21 no.2
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• pp.113-119
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• 2007

To investigate the vegetation structure at Orimok of Hallasan national park, 28 plots$(2,000m^2)$ were surveyed by random sampling method. Carpinus tschonoskii was a major woody species in the studied area in Orimok, and Quercus gorsseserrata, Quercus serrata, and Quercus mongolica were partly occupied. High negative correlations were shown between C. tschonoskii and Ilex macropoda, Lindera erythrocarpa, Quercus mongolica Comus walteri and Symplocos coreana, and relatively high positive correlations were proved to exist between Acer pictum var. mono and Carpinus cordata, Quercus gorsseserrata Ilex macropoda and Lindera erythrocaypa, Q. mongolica Abies nephrolepis and Prunus sargentii, Kalopanax septemlobus Taxus cuspidata and Symplocos coreana. Species diversity(H') was 0.771, and it was relatively low numerical value compared to that of other national parks.

• Korean Journal of Environment and Ecology
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• v.15 no.4
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• pp.330-343
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• 2002

To investigate the vegetation structure of mountain ridge from Pijae to Doraegijae in Baekdudaegan, forty-three sites(size 500$m^2$) were set up and surveyed By using TWINSPAN classification. the plant community was divided into five groups, those are mixed forest on sub-alpine zone. Quercus mongolica - Acer pseudo-sieboldianum community, Q. mongolica-Pinus densiflora community, and Larix leptolepis forest. Quercus mongolica was found as a major woody plant species in the ridge area. And partly the subalpine zone in low elevation was occupied by deciduous tree species and mixed a few conifer such as Abies nephrolepis and Taxus cuspidata etc.. Species diversity index(Area 1,000$m^2$) in the showed calculated 2.0149~3.0139 and it was similar to those of the ridge area of the national parks in Beakdudaegan.

• Journal of Korean Society of Forest Science
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• v.87 no.2
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• pp.253-259
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• 1998

The stimulated secretion of golden varnish sap by the infection of microorganisms on the bark of Dendropanax morbifera Lev. was observed in the natural habitats. Four candidate strains of such microorganisms(i.e., Sb1, Sb2, Sb3 and Sb4) were isolated from the bark of D. morbifera which was infected in natural. Of them, Sb3 and Sb4 strains showed stimulated secretion of golden vernish sap with the greatest stimulation by Sb4 strains. The yield of golden varnish sap from the bark of D. morbifera was boosted about 3.4~7.7 times by the inoculation of Sb4 strain in compassion with that collected from lacquer tree(Rhus verniciflua Stokes) by the traditional method. The mycelium color of Sb4 strain was grayish white. The optimum growth temperatures and pH were ranged from 30 to $35^{\circ}C$ and from pH 6.5 to 7.0.

• Journal of Korean Society of Forest Science
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• v.81 no.4
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• pp.310-319
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• 1992

Vegetational data obtained from 24 quadrats of Mt. Paekdu area were analysed by applying two multivariate methods : two-way indicator species analysis(TWIMSPAN) for classification and detrended canonical correspondence analysis(DCCA) for ordination. DCCA technique allowed to extract the ordination axes that could be related to 9 environmental factors. The dominant tree species distributed in the region between 1,700-1,950m from sea level were Betula ermanii, Larix olgensis, Abies nephrolepis, and Picea jezoensis in descending order. The dominant tree species distributed in the region between 1.300-1.500m were Abies nephrolepis, Pinus koraiensis, Larix olgensis, Betula mandshurica, and Picea jezoensis in descending order. The available phosphorus content in forest soil ranged from 7 to 1.153ppm. The distribution of the major communities showed a close relationship with elevation gradient. From high to low elevation, the communities of Alnus fruticosa var. mandshurica, Betula ermanii, Larix olgensis, Abies nephrolepis, Picea jezoensis, Pinus koraiensis, and Quercus mongolica were found in descending order. At the communities where Betula ermanii was dominant, Betula ermanii forest was distributed in the high elevation area, Betula ermanii-Larix olgensis forest in the good nutrition of organic matter and $K^+$, and Abies nephrolepis forest in the good nutrition of $Mg^{{+}{+}}$ and $Ca^{{+}{+}}$. The most dominant factor influencing community distribution was elevation.

• Journal of Korean Society of Forest Science
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• v.112 no.4
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• pp.405-416
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• 2023

In this study, the sustainability of Abies nephrolepis in the presence of Tripterygium regelii was analyzed. To accomplish this, a field survey of140 stands was conducted. Based on the presence or absence of T. regelii, as well as the layer in which it was present (where appropriate), the type of T. regelii presence wasclassified as follows: TP type, indicating the presence of T. regelii in the tree and sub-tree layers; SP type, indicating its presence in the shrub layer; and A type, indicatingits absence from all layers. The indicator species analysis revealed T. regelii to be an indicator species of the TP type and SP type. The MRPP test was used to examine the differences among the types. Moreover, the seedling and DBH class analysis indicated there to be a difficulty in terms of the status competition, as the number of young trees generated by A. nephrolepis was the lowest in the TP type. The findings of this study enhanced our understanding of the vegetation structure of A. nephrolepis, thereby contributing to efforts concerningits conservation and management.

• Proceedings of the Korean Society of Applied Pharmacology
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• 1995.04a
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• pp.115-115
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• 1995

저자 등은 일련의 식물엑스에 대하여 항위염 및 항궤양효능에 관한 검색을 실시하여 오리나무수피의 MeOH엑스가 현저한 효과가 있음을 예지 하였으므로 그에 대하여 보다 구체적인 실험을 실시하였다. 즉 MeOH엑스를 Hexane, CMCl$_3$, BuOH로 계통적으로 추출하여 상기의 분획 및 잔사인 물분획을 제조하여 이에 대한 실험을 실시하였다. 소화성궤양이 공격인자와 방어인자의 불균형에 의해 형성됨을 Shay가 주장함으로써 공격인자의 억제를 알아보기 위한 Mizui 등의 방법인 HClㆍEtOH 유발 위손상 실험과 Guth 등의 Aspirin 위손상 실험 방법에 따라서 위 손상정표를 관찰하였다. Shay의 방법에 따라서 위궤양 모텔은 유문을 결찰하고 검체를 십이지장내에 투여하고 처치를 완료하고 12시간 후에 궤양정도와 또한 4시간의 유문결찰에 의한 위액분 비량, pH 및 산분비량에 미치는 영향을 관찰하였다. 또 염산과 pepsin 등에 의한 점막 손상에 대한 방어인자의 증강요인인 위 mucous membrane의 mucus분비를 알아보기 위한 absoluteㆍ에탄올 위손상에 대한 예방효과 시험을 시행하였다. 이 실험의 결과, 오리나무 MeOH엑스의 항위염 및 항위궤양효과는 BuOH 분획에서 강력한 작용이 있었으며 이 분획은 aspirin 유발 위손상 및 shay 궤양에 효과를 나타내었고 또한 mucin량의 증가를 보여주었다. 그러나 이 분획은 위액, pH 및 산분비량에 영향을 나타내지 아니하였다.

• Korean Journal of Agricultural and Forest Meteorology
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• v.6 no.1
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• pp.30-37
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• 2004

This study investigated the structural characteristics of Taxus cuspidata communities on Mt. Hambaek. The vegetation consisted of 9 species in the T$_1$(tree) layer, 35 species in the T$_2$(subtall tree) layer, 28 species in the S(shrub) layer, and 69 species in the H(herb) layer. The dominant species of the T$_1$ layer was Taxus cuspidata and that of the T$_2$ layer was Acer tschonoskii var, rubripes. The dominant species of the S layer was Tripterygium regelii, and the dominant species of the H layer was Pseudostellaria palibiniana. The diameter distribution of the dominant five species in the T$_1$ and T$_2$ layers indicates that these Taxus cuspidata forests may be gradually dominated by Quercus mangolica and by Tripterygium regelii. The composition of biological type was Ph-D$_1$-R$_{5}$-e.

• Korean Journal of Plant Resources
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• v.17 no.1
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• pp.67-74
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• 2004

This study was carried out to investigate the structural characteristics of Taxus cuspidate communities in Mt. DuckYoo. The vegetation was consisted of 20 species in the T$_1$(tree) layer, 26 species in the T$_2$(subtall tree) layer, 26species in S(shrub) layer, and 56 species in the H(herb) layer. The dominant species of Mt. Duckyoo was Taxus cuspidata in the T$_1$ Layer, Acer tschonoskii var. rubripes in the T$_2$ Layer, Tripterygium regelii and Acer tschonoskii var. rubripes in the S Layer and Sasa borealis in the H Layer. According to the diameter distribution of high ranking five species in T$_1$, T$_2$ layer at natural Taxus cuspidata communities, these forests may be gradually replaced by Quercus mongolica, Tripterygium regelii. The composition of biological type was Ph-D$_1$-R$\sub$5/-e.