A phytosociological survey carried out using the Z.-M. School’s methodology and system of numerical-classification analyses, this study sought to classify the syntaxa of forest vegetation on Mt. Byeokbang and to collect basic data on the transitional zones of the southern Korean peninsula’s coastal region. The syntaxa were classified into three physiognomic types and nine communities, including (1) evergreen coniferous forests (Eurya japonica-Pinus thunbergii community and Ardisia japonica-Pinus densiflora community), (2) summer-green, broad-leaved forests (Chloranthus japonicus-Quercus serrate community, Syneilesis palmata-Quercus mongolica community, Quercus acutissima community, Carpinus turczaninovii var. coreana community, Fraxinus siebolidiana-Quercus dentate community, and Deutzia glabrata-Lindera erythrocarpa community), and (3) artificial afforestation (Alnus firma afforestation). The Chloranthus japonicus-Quercus serrata community, Syneilesis palmata-Quercus mongolica community, Fraxinus siebolidiana-Quercus dentata community, Carpinus turczaninovii var. coreana, community and Deutzia glabrata-Lindera erythrocarpa community were closely evaluated for national vegetation naturalness. It was confirmed that the Carpinus turczaninovii var. coreana community was endemic to Korea. Most syntaxa were defined as a secondary forestation due to various human activities (e.g., forest fires, logging, digging, climbing, etc.). The results of a canonical-correspondence analysis (CCA) showed that human activities, altitude, humus depth, rock cover ratio, slope, etc. were the main ecological factors determining the classified plant communities’ distribution patterns.
Kim, Han-Hyuk;Park, Gun-Hye;Park, Kang-Soo;Lee, Jin-Young;Kim, Tae-Hoon;An, Bong-Jeun
Journal of Life Science
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v.20
no.7
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pp.1034-1040
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2010
Plants and their extracts can be utilized as inexpensive and rich resources of active constituents in the cosmetic field, as well as the food, pharmaceutical and medicinal fields. Until now, Aster glehni Fr. Schm. had no known active effect, except on anti-oxidation, that was found during investigations for application in the cosmetic field. In this study, we examined the inhibition of enzymatic reactions to protein levels in inclusive B16F10 melanoma cell lines. Significant inhibition of enzymatic reactions was observed in the EtOAc extract, which advanced to tyrosinase protein and TRP-1 in the B16F10 melanoma cell line. These results indicated that the effect of EtOAc extract inhibited expressions of tyrosinase protein and TRP-1 in the B16F10 melanoma cell line by 30.5% and 41.5% at 100ug/ml respectively. On the other hand, antimicrobial activity was evaluated to the four fractions in normal flora of the skin. Hexane extract was only exhibited in the higher clear zone in all strains. In conclusion, any cosmeceutical effects of Aster glehni Fr. Schm. may have a potential meaning, as well as possible value for further studies regarding the effects of chemical constituents of Aster glehni Fr. Schm.
The purpose of this study was to analyze forest vegetation structure in Marugeum (the ridge line) area between Dakmokryeong and Daetjae in Baekdudaegan through vegetation classification, importance value, species diversity, and CCA using the data that were collected from 245 quadrates through Braun-Blanquet vegetation survey method from May to September in 2017. The results of the forest vegetation classification identified 8 vegetation units with Quercus mongolica community group at the highest level. Q. mongolica community group was classified into the Cornus controversa community, Buxus koreana community, Sasa borealis community, Abies nephrolepis community, and Q. mongolica typical community. C. controversa community was further classified into Quercus dentata group, Filipendula glaberrima group, Larix kaempferi group, and C. controversa typical group. The result of the important value analysis showed that Q. dentata had the highest importance value at 19.1% in vegetation unit 1 while Q. mongolica had the highest importance value at 22.7%, 38.3%, 25.6%, 41.3%, 27.9%, and 41.6% in vegetation unit 2, 4, 5, 6, 7, and 8, respectively, and L. kaempferi had the highest importance value at 27.6% in vegetation unit 3. As such, Q. mongolica species generally represented the communities of Marugeum (the ridge line) area of Dakmokryeong to Daetjae in Baekdudaegan. The results of species diversity showed that vegetation unit 1 and 2 were 3.305 and 3.236, respectively, which were relatively higher than other vegetation units. It was considered that this result was due to the influence of high emergence of present species. The results of the CCA analysis of the correlations between biotic environmental factors and vegetation types showed that vegetation unit 1 was mainly correlated with the megaphanerophyte ratio and vine plant ratio. In the correlations between abiotic environmental factors and vegetation types, vegetation unit 7 was significantly correlated with altitude. From the perspective of ecological management, vegetation unit 5 represented by B. koreana community was inhabited by a variety of plants due to the species composition and location environment due to the geological characteristics that are typical of limestone area. Vegetation unit 7 represented by A. nephrolepis community was typified as subalpine vegetation widely distributed by relict species and endemic species. We concluded that it is necessary to manage these vegetation units with an ecologically differentiated approach.
The sustainability of Iris koreana, a rare and endemic plant designated by the Korea Forest Service, is threatened due to artificial factors such as habitats loss and climate change etc. and internal factors such as changes in biological properties of the habitats etc. but conservation biology research has not been performed in South Korea. The objective of this study is to establish the species conservation strategies by analyzing the characteristics of their habitats, including: 1) Population characteristics, and 2) habitat analysis of the vegetation and abiotic environments. From April to May, 2015, population characteristics [density (stems $m^{-2}$), flowering rate (%) and leaf area size ($cm^2$)] in I. koreana habitats such as Buan1~6 (BA1~6), Jangseong1~2 (JS1~2) and vegetation characteristics (phytosociological research and ordination analysis), and abiotic environments [soil temperature ($^{\circ}C$), soil humidity (%), transmitted light ($mol{\cdot}m^{-2}{\cdot}d^{-1}$) and canopy openness (%)] were measured. I. koreana was mainly distributed at elevation 50 to 150 m and 2 to $11^{\circ}$ slope. Slope direction was shown as 90 to $193^{\circ}$. The average degree of canopy openness was 11.9%. It showed the highest at BA2 (17.5) and the lowest at JS1 (7.7). The average degree of transmitted light was $6.3mol{\cdot}m^{-2}{\cdot}d^{-1}$. It showed the highest at BA2 (10.1) and the lowest at JS1 (3.6). Population density showed average 25.8 (stems $m^{-2}$). It showed the highest at JS2 (19.7) and the lowest at JS1 (9.3). flowering stems showed average 16.9 (stems). It showed the highest at BA3 (35) and the lowest at BA5 (4). Leaf area size was average $94.1cm^2$.
Journal of the Korean Institute of Traditional Landscape Architecture
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v.35
no.2
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pp.87-97
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2017
Paulownia species has long been recognized in Korean traditional culture and the values of the species have been researched in various focuses. However, studies on distribution and ecological characteristics of the species are still needed. This study aimed to identify distribution trends and ecological characteristics of two Paulownia species in Busan metropolitan city using the MaxEnt model. The MaxEnt model was established based on the environmental factors such as positioning information of the Paulownia species, topography, climate and degree of anthropogenic disturbance potentiality (ADP), which was collected in the on-site research. The study verified that the accuracy of the model was appropriate as the AUC value of Paulownia coreana and P. tomentosa was 0.809, respectively. In terms of the distribution trends of the two Paulownia species in the research area depending on the distribution model, they were both mainly distributed in downtown where built-up area and bare ground were densely concentrated. The potential distribution area of the two species was identified as $137.4km^2$ for P. coreana and $135.0km^2$ for P. tomentosa. The distribution probability was high in Jung-gu, Dongrae-gu, Busanjin-gu and Yeonje-gu. As a result of the analysis on contribution of the environmental factors, it was turned out that the degree of anthropogenic disturbance potentiality (ADP) contributed to distribution of P. coreana and P. tomentosa by about 50%, and the contribution of the environmental factors had a positive correlation with the degree of ADP. The elevation had a negative correlation with both the two species, which was considered because the species must compete more with native species in natural habitats as the altitude above sea level rises. The research findings demonstrated numerically that the distribution of P.coreana and P. tomentosa depended on artificial activities, and indicated the relevance with the Korean traditional landscape. These findings are expected to provide meaningful information in using, preserving and restoring Paulownia species.
This study intended to investigate environmental factors including soil and vegetation in order to understand the environmental and ecological characteristics of the Korean endemic species, Syringa fauriei. Syringa fauriei is mainly distributed along the valley and riverside of the Gangwondo and its population is located at an elevation of 121~520m. Consequent to a vegetation survey within natural populations, a total of 320 taxa were identified from 20 quadrates in 4 natural populations. The Syringa fauriei population was classified into Securinega suffruticosa dominant population, Acer pseudosieboldianum dominant population, Amorpha fruticosa dominant population and Sorbaria sorbifolia var. stellipila dominant population. According to the physical and chemical soil analysis, Syringa fauriei habitats contained 1.98~2.81% of organic matter and 0.13~0.20 mg/kg of total nitrogen. The concentrations of cation exchange capacities $K^+$, $Ca^{2+}$, and $Mg^{2+}$ were $0.10{\sim}0.33cmol^+/kg$, $3.44{\sim}20.53cmol^+/kg$, and $0.34{\sim}0.95cmol^+/kg$, respectively. Positive ion substitution capacity was $8.08{\sim}13.68cmol^+/kg$. The pH was 6.28~7.74. The importance value of Deutzia glabrata, Fraxinus rhynchophylla, Alangium platanifolium var. trilobum, Syringa fauriei, Juglans mandshurica, and Salix koreensis in the Syringa fauriei population were 86.99%, 43.97%, 23.01%,18.52, 18.40%, and 11.56%, respectively. Correlation analysis between the vegetation of Syringa fauriei populations and its environmental factors using DCCA revealed that the altitude above sea level and $Mg^{2+}$ were the most influential factors, while dominant populations of Securinega suffruticosa and Acer pseudosieboldianum were spread across areas with high percentages of pH, CEC, and $Mg^{2+}$. Acer pseudosieboldianum population was dispersed in areas with higher $K^+$ compared to Securinega suffruticosa population. The dominant population of Amorpha fruticosa was found to live in places with high altitudes above sea level and with high rates of available phosphate, $K^+$, and rock-exposure.
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.
Kim, Min-Jin;Yu, Sang-Mi;Kim, Do-Yeon;Heo, Tae-Im;Lee, Jun Woo;Park, Ji-Ae;Park, Chang-Su;Kim, Yeong-Su
Journal of Life Science
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v.28
no.8
/
pp.938-944
/
2018
This study evaluated tyrosinase, elastase inhibitory, and antioxidant activities of fermented Rhododendron micranthum Turcz. extract using a lactic acid bacterium, Lactobacillus rhamnosus. The optimum conditions for fermentation of R. micranthum Turcz. extract were $37^{\circ}C$ and 3% R. micranthum Turcz. extract for 3 days based on the bacterial cell number, total phenolic compounds, DPPH radical scavenging activity, and tyrosinase and elastase inhibitory activity. After culture for 3 days using 3% R. micranthum Turcz. extract, the cell mass of L. rhamnosus reached $5.7{\times}10^9CFU/ml$. The results indicated that R. micranthum Turcz. extract can be used for industrial lactic acid bacteria culture. After fermentation under optimum conditions, the total content of phenolic compounds of the fermented R. micranthum Turcz. extract was 157 GAE mg/ml, and the $IC_{50s}$ of DPPH radical scavenging activity, ABTS radical scavenging activity, and tyrosinase and elastase inhibitory effects were 78.8, 79.8, 329.1, and $449.5{\mu}g/ml$, respectively. The fermented R. micranthum Turcz. extract exhibited 1.2-, 1.3-, 1.5-, 2.4-, and 5.6-fold higher total content of phenolic compounds, DPPH radical scavenging activity, ABTS radical scavenging activity, and tyrosinase and elastase inhibitory effects than the nonfermented R. micranthum Turcz. extract. These results indicated that fermented R. micranthum Turcz. extract using L. rhamnosus can be used for developing new natural functional ingredients for the health food or cosmetic industry.
This experiment was conducted to investigate the propagation for mass production of Acanthopanax koreanum NAKAI utilized for health food and medicine material. Germination rate of A. koreanum seeds were 64% when seeds were stored at 15 for 60 days and then were treated with 50 ppm of kinetin and dormancy were broken at 5 for 60 days. Rooting rates of green-wood cuttings treated with IBA 100 ppm, NAA 50 ppm, and IAA 100 ppm were 61.7, 56.7, and 60.0%, respectively. Rooting rates of greenwood cuttings treated with Rooton in scoria + horticulture media and volcanic ash were 76.7 and 66.7%, respectively. Survival rate of seedlings planted on Aug. 10 was highest (96%) under 75% shading net while shoot growth was best under 55% shading net. Survival rate of seedlings planted on May 2 was highest (91%) 55% shading net, and shoot growth was also best 55% under shading net.
This study intended to investigate the environmental factors including soil and vegetation in order to better understand the environmental and ecological characteristics of ten different habitats of $Hanabusaya$$asiatica$. These habitats, according to investigations, are mostly located on the slopes of mountains facing north at an altitude of 580 m to 1,396 m above sea level with angles of inclination ranging from 5 degrees to 80 degrees. A total of 146 vascular plant taxa are identified in 32 quadrates of the ten habitats. The importance value of $H.$$asiatica$ is 8.87%, and 5 highly ranked species such as $Carex$$siderosticta$ (8.67%), $Ainsliaea$$acerifolia$ var. $subapoda$ (7.10%), $Calamagrostis$$arundinacea$ (6.79%), $Athyrium$$yokoscense$ (5.33%), $Astilbe$$rubra$ (3.11%) are considered to be an affinity with $H.$$asiatica$ in their habitats. Dominant species of woody plants in ten habitats are represented as $Quercus$$mongolica$ in tree layer (T1), $Acer$$pseudo$-$sieboldianum$ in subtree layer (T2), $Rhododendron$$schlippenbachii$ and $Tripterygium$$regelii$ in shrub layer (S). The degree of their average species diversity is 1.30, and that of dominance and evenness are 0.08 and 0.88, respectively. The type of soil is sandy loam, loam and loamy sand, and the average field capacity of soil is 23.95%. Their average organic matter is 12.28%, soil pH 5.79, and available phosphorus is 25.48%. Correlation coefficients analysis based on environmental factors, vegetation and soil analysis shows that the coverage of tree layers is correlated with richness, diversity, dominance, evenness and coverage of $H.$$asiatica$.
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