• Journal of Forest and Environmental Science
• /
• v.40 no.1
• /
• pp.53-63
• /
• 2024

Alnus japonica is indigenous to korea and usually grows in wet lowlands and damp regions in the mountains. Oregonin, is known as a representative compound of the diarylheptanoid mainly found in Alnus species and has been reported to have anti-inflammatory and antioxidant effects. In this experiment, we conducted a study on the presence of orogonin in the native Alnus japonica from the Baekdudaegan mountain range in Korea. We collected a total of 30 samples from Chuncheon, Yangyang, and Jeongseon and conducted experiments. In the HPLC analysis, we confirmed that oregonin was detected in all samples. After the quantitative analysis, samples with the highest content from each region were selected and LC-MS/MS experiments were performed. As a result, the same molecular weight as oregonin, 477.2 m/z, was confirmed in all samples.

• Journal of the Korean Society of Environmental Restoration Technology
• /
• v.26 no.4
• /
• pp.1-16
• /
• 2023

The purpose of this study is to understand the vegetation structure of the Corylopsis coreana habitats in South Korea and their correlation with environmental factors, in order to provide basic data for preparing conservation. A total of 40 vegetation survey plots were established in around Southern region, Gangwon-do and Gyeonggi-do Province. The cluster analysis revealed four distinct clusters: Quercus mongolica-Pinus densiflora (QmPd), Castanea crenata (Cc), Quercus mongolica (Qm), and Pinus koraiensis (Pk). Among them, the QmPd cluster was selected as the representative community. Soil texture analysis that most areas consisted of loamy soil and were distributed on the northern aspects. The plantation, represented by Pk, exhibited a high content of exchangeable aluminum (5.227±0.342 mg/kg), suggesting the need for soil improvement and monitoring in these habitats. The canopy openness (forest gap) ranged from 11% to 21%, indicating a relatively closed canopy in many survey plots. Non-metric multidimensional scaling analysis indicated heterogeneous species composition between the QmPd cluster and the Pk cluster (total R² = 0.608).

• Proceedings of the Plant Resources Society of Korea Conference
• /
• 2019.04a
• /
• pp.50-50
• /
• 2019

본 연구는 국내 자생 국화과의 산국속 3종을 대상으로 국립백두대간수목원 시드뱅크 내 장기저장 가능성을 확인하고자 수행되었다. 국화과 3종의 종자는 경북 봉화군 춘양면에서 2017년 11월에 채종한 후 선별하였다. 종자는 저장조건별($-20^{\circ}C$, 40%RH /$5^{\circ}C$, 30%RH /$15^{\circ}C$, 15%RH) 12주간 저장하여 2주단위로 발아실험을 실시하였다. 발아실험은 광12시간으로 25/15(12/12h)$^{\circ}C$ 변온조건으로 진행하였다. 종자는 10립 3반복으로 1% Agar배지에 치상하여 유근이 1mm 이상 출현한 것을 발아립으로 정의하였다. 평균발아율(GP)과 발아속도(MGT)를 조사하였다. 구절초를 조건별 2주 저장 후 평균발아율과 평균발아일수를 조사한 결과 $-20^{\circ}C/5^{\circ}C/15^{\circ}C$에서 각각 100%, $4.0{\pm}0.09$일 / $96.7{\pm}3.33%$, $3.7{\pm}0.08$일 / $93.3{\pm}3.33%$, $3.6{\pm}0.11$일로 조사 되었으며 12주 저장 후 100%, $4.1{\pm}0.27$일 / $96.7{\pm}3.33%$, $4.4{\pm}0.21$일 / $96.7{\pm}3.33%$, $3.7{\pm}0.13$일로 조사되어 저장 후 발아율의 감소를 보이지 않았으며 $5^{\circ}C$ 저장에서 평균발아일수가 길어지는 경향을 보였다. 포천구절초의 경우 $-20^{\circ}C/5^{\circ}C/15^{\circ}C$에서 각각 $96.7{\pm}3.33%$, $4.4{\pm}0.36$일 / 100%, $4.2{\pm}0.09$일 / $93.3{\pm}6.67%$, $4.1{\pm}0.22$일로 조사 되었으며 12주 저장 후 $96.7{\pm}3.33%$, $4.2{\pm}0.30$일 / $96.7{\pm}3.33%$, $4.2{\pm}0.15$일 / 100%, $4.0{\pm}0.09$일로 조사 되어 저장 전 후 차이를 확인 할 수 없었다. 한라구절초의 경우 $-20^{\circ}C/5^{\circ}C/15^{\circ}C$에서 각각 $93.3{\pm}3.33%$, $3.4{\pm}0.10$일 / $93.3{\pm}3.33%$, $3.7{\pm}0.08$일 / $93.3{\pm}6.67%$, $3.8{\pm}0.02$일로 조사 되었으며 12주 저장 후 $96.7{\pm}3.33%$, $4.0{\pm}0.21$일 / $96.7{\pm}3.33%$, $4.2{\pm}0.03$일 / $96.7{\pm}3.33%$, $3.8{\pm}0.09$일로 조사되어 발아율이 소폭 상승하는 경향을 보였다. 산국속 3종의 종자는 12주 저장 후 기간 및 저장조건에 따른 평균발아율과 발아속도에서 유의적인 차이를 나타내지 않았다. 이상의 결과로 산국속 3종 구절초, 포천구절초, 한라구절초의 종자는 저장기간 및 조건에 대해 민감한 반응을 보이지 않아 장기저장이 가능한 진정종자(Orthodox seed)로 판단된다.

• Journal of Korean Society of Forest Science
• /
• v.111 no.1
• /
• pp.61-71
• /
• 2022

Data from an investigation of vulnerable conifer species in the subalpine zone in Korea obtained by the Korea Forest Service in 2017-2018 and monitoring research conducted by the National Institute of Forest Science since 2014 were used to analyze the status of distribution and growing condition of three major conifer species (Abies nephrolepis, Abies koreana, and Picea jezoensis) in the subalpine zone in the Baekdudaegan protected area. The distribution area of the studied species in the Baekdudaegan protected area was ca. 74% (8,035 ha) of the total distribution area in Korea, indicating that Baekdudaegan is a core area for conservation and restoration of subalpine conifer species. From decline index [A. nephrolepis in Mt. Taebaeksan and Mt. Deogyusan increased by 77.3% and 29.6%, respectively; A. koreana in Mt. Jirisan (Chunwangbong Peak) increased by 45.2% in four years; and P. jezoensis in Mt. Jirisan (Chunwangbong Peak) increased by 47.8% in two years] and seedling frequency (lower frequency of newly recruited seedlings than dead seedlings) results, the studied species are expected to face difficulties in sustainability. In contrast, at Mt. Seseoksan and Chunwangbong Peak in Mt. Jirisan, the health of trees and seedling frequency showed a partial tendency to recover and increase. In addition, we identified the relationship between the decline index and seedling frequency. These results will support the implementation of conservation strategies for vulnerable conifer species in the subalpine zone.

• Journal of Forest and Environmental Science
• /
• v.34 no.3
• /
• pp.224-234
• /
• 2018

An efficient method to select drought tolerant Korean native plants using in vitro culture system was established in this study. While the plant growths and root inductions of each plant were proportionately affected by concentrations of mannitol on in vitro culturing seven plant species to test tolerance to osmotic stress, growth index (GI) and number of root induction of Chrysanthemi zawadskii var. latilobum and Dianthus chinensis var. semperflorens plantlets were higher than the others in 125mM mannitol. In test with polyethylene glycol (PEG), plantlets of C. zawadskii var. latilobum and D. chinensis var. semperflorens showed higher GI and number of root induction than the others in 33.3mM. On testing whether the well grown plants under osmotic stress are tolerant to virtual drought stress, there were significant differences in the withering rates of C. zawadskii var. latilobum and D. chinensis and those of were Aster yomena and Centaurea cyanus after 12 days without watering. It was found that significantly lower stomata numbers were shown in both drought tolerant plants than the sensitive plants. Averages of the stomata circumferences and the stomata area in the plantlets of the tolerant species were larger than those of the sensitive plants D. chinensis var. semperflorens showed the lowest transpiration level per unit area. The highest stomatal area per unit area was found in C. zawadskii, followed by D. chinensis var. semperflorens, Aster yomena and C. cyanus. In conclusion, C. zawadskii var. latilobum and D. chinensis var. semperflorens were more tolerant to drought than other two species. Furthermore in vitro selection was successfully used to screen drought tolerance species of native plant species.

• Journal of the Korean Association of Geographic Information Studies
• /
• v.16 no.3
• /
• pp.136-146
• /
• 2013

This study has specified terminology for mountain ridgeline, and organized the present condition of Korean mountain ridgeline and empirical management measures of Beakdudeagan and Jeongmeak. Moreover, based on previously published paper maps, mountain map, and numerical maps, this study has used GIS to reorganize Jeongmaek of Korea, including Hanbukjeongmaek, Hannamjeongmaek, and Gumbukjoengmaek. To ensure accuracy, DEM, Shaded Relief Image, gradient, curvature, and aspect have been analyzed from recent numerical maps. On extraction process, this study analyzes more specifically the results, previous Beakdudaegan is modified and new Jeongmaeks have been extracted. Moreover, for analyzing natural environment of surrounding of major mountain ridgeline, ecological zoning grade of mountain ridgeline is analyzed. With the analyzed result, domestic and foreign mountain ridgeline management policy is suggested, and environmental impact assessment method for major mountain ridgeline development is also suggested. In this study, Baekdudaegan and its Jeongmaek are organized and analyzed. With the results, this study suggested political linkage of mountain ridgelines and guidelines for environmental impact assessment of ridgeline development.

• Journal of Korean Society of Forest Science
• /
• v.104 no.1
• /
• pp.14-25
• /
• 2015

This study was carried out to classify forest communities and to aggregate forest cover types for the complex and diversified natural forest areas of Guryongsan, Sobaeksan, Baekhwasan, Sokrisan, and Baekhaksan in the middle part of Baekdudaegan. The vegetation data were collected by point-centered quarter sampling method. One thousand one hundred fourteen sample points were subjected to cluster analysis to classify 27 forest communities, which were aggregated into 7 representative forest cover types on the basis of community similarity from composition of canopy species. They were Quercus mongolica forest cover type, mixed mesophytic forest cover type, Q. variabilis forest cover type, Pinus densiflora forest cover type, the others deciduous forest cover type, Q. serrata forest cover type, and subalpine forest cover type. The Q. mongolica forest cover type was most widely distributed in the study areas. It was assumed that abundance of Q. mongolica might be negatively associated with species diversity. Mixed mesophytic forest cover type and the others deciduous forest cover type were commonly distributed in the areas of valley, on the other hand, Q. mongolica cover type and P. densiflora cover type tended to be distributed in the areas of ridge.

• Journal of agriculture & life science
• /
• v.46 no.4
• /
• pp.41-55
• /
• 2012

On the basis of vegetation data collected by point-centered quarter method in analysis in Baekdudaegan of Gangwon province in the area of Hyangrobong, Odaesan, Seokbyeongsan, Dutasan, Deokhangsan and Hambaeksan, the study was carried out to classify forest communities and to evaluate the successional trends. The classification method of cluster analysis was used to make various disordered forests into several common groups for 1,004 sample points all together. By clustering the forests in the six study areas were classified into 28 forest communities, which were subjected to aggregate 8 representative forest communities on the count of species composition and species diversity. They were Mesophytic mixed forest community, others deciduous forest community, Quercus mongolica (dominant) community, Q. mongolica (pure) community, Pinus densiflora - Q. mongolica community, P. densiflora community, Betula ermanii community and Q. mongolica - Pinus koraiensis community. The ecological outlook from the result indicated that P. densiflora community and P. densiflora - Q. mongolica community, which were located in Seokbyeongsan, Dutasan and Deokhangsan around 1,000m above the sea level showed lower species diversity index. On the contrary Mesophytic mixed forest community, others deciduous forest community which was located in Hyangrobong, Odaesan and Hambaeksan mostly in protected area and national park around 1,500m above the sea level displayed higher species diversity index. As the composition ratio of Q. mongolica within a certain community was decreased, the species diversity was generally increased, assumed that abundance of Q. mongolica might be negatively associated with species diversity in the national deciduous forest.

• Journal of Korean Society of Forest Science
• /
• v.110 no.1
• /
• pp.91-105
• /
• 2021

We conducted a study to identify the relationships between the investigated factors and provide a methodology and generate data by applying deterioration classes to the Seonjaryeong Forest Trail (4.3 km) in the Baekdudaegan Ridge. The average trail width (1.7 m) and bare width (1.4 m) were wider than those obtained in the previous studies. The frequency of trail deterioration was also high. Specific data on deterioration classes were obtained and evaluated using qualitative criteria. Specific data for heavy class stands at 20.1% in trail grade, 13.3 cm on average, and 16.1 cm in the center of erosion depth, 16.2 cm of CSA, 12.3 kg/cm (20.1 mm) on average and maximum 39.3 kg/cm (29.6 mm) of soil hardness. We observed a positive correlation between the deterioration class and trail grade, and the average and maximum soil erosion depths of the hill side were deeper than those of the ridge. The soil hardness data showed a statistically significant difference in terms of the transect site and calculation method (㎏/㎠, mm). Therefore, trail deterioration was observed at the sites having ≥20% trail grade; thus, continuous monitoring at fixed sites over time will be required for sustainability. Furthermore, the trail grade should be of the utmost priority in trail design and management.

• Korean Journal of Plant Resources
• /
• v.34 no.2
• /
• pp.115-143
• /
• 2021

Mt. Hwang-ak, as a temple forest belongs to Baekdudaegan. flora investigation was conducted to better know of current natural environment. At the same time, For the understanding of planted plants which is in the traditional Korea buddhism temple for landscape, research on Jikji temple had taken place during 2019 April to October with 12 times. As a result, the list of plants at Mt. Hwang-ak was classified as a total of 534 taxa comprising of 96 families, 312 genus, 462 species, 4 subspecies, 59 varieties, 9 forma. This listed plants could be classified as 4 categories by each standard. the listed plants were 14 species of Korean endemic plants, 13 species of Rare plants data book in korea, 34 species of Invasive Alien Plants in South Korea with 10% of Urbanization Ratio and 6% of Naturalization Ratio respectively, 167 species of List of Medicinal Resources Plants in Korea. In the Temple of Jikji, could find 81 species of planted plants that widely distributed all around the temple for landscape. Compared to other temple, We could observed 51% of species were overlapping, Among them, 9% of species overlapping with more than three temples.