• Korean Journal of Plant Taxonomy
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• v.41 no.4
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• pp.398-414
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• 2011

The flora in the region of Mt. Sobaeksan National Park ($N36^{\circ}50^{\prime}-37^{\circ}50^{\prime}$, $E128^{\circ}20^{\prime}-128^{\circ}43^{\prime}$) was surveyed from April of 2005 to October of 2011. The vascular plants from 27 field surveys were revealed to total 869 taxa, comprising 112 families, 429 genera, 756 species, four subspecies, 91 varieties and 18 forms. Sixty-eight taxa were the first records from this region. This field study discovered significant plants in various categories. Korean endemic plants numbered 25 taxa, and 18 taxa designated by the Korean Forest Service as rare plants were investigated in this region. The taxa in category II of rare and endangered plants and higher than the third degree among the floristic regional indicator plants designated by the Korean Ministry of the Environment were three taxa and 75 taxa, respectively. From a geographical perspective, limited distribution of Saxifraga octopetala, Corydalis grandicalyx, Aegopodium alpestre, and Polygonatum acuminatifolium at a latitude higher than that of Sobaeksan National Park suggest that Sobaeksan National Park might be the limit line of the distribution of the taxa. Stewartia koreana demonstrate a reversed pattern from the taxa above, occurring at a latitude lower than that of Sobaeksan National Park. In addition, naturalized plants of 53 taxa were recorded.

• Publications of The Korean Astronomical Society
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• v.8 no.1
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• pp.185-197
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• 1993

We developed an Automatized Differential Photometry System (ADPS) to achieve high time resolution and high efficiency in the photometric observations of short period variable stars. This ADPS has been introduced to the CCD camera system attached to the 6lcm Reflector at Sobaeksan Astronomy Observatory. Several new algorithms were devised for the controlling the telescope. the star recognition in a CCD frame and the aperture photometry, etc..As the result, the differential photometric observation was fully automatized without any manual control, and much faster data acquisition could be achieved over the conventional photoelectric differential photometry.

• Korean Journal of Environment and Ecology
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• v.6 no.2
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• pp.218-228
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• 1993

Visitors to Sobaekson National Park were surveyed from August 6 to 9 and from October 16 to 18. During this time. 773 visitors were contacted. Of those individuals, 61.7% were males. 40.8% of respondents reported that they had gone beyond high school. and almost one-half (46.9% ) had gone as far as college. 52.8% were 20 years of age. Over one-half (55.8% ) of the survey respondents were making their first trip to Sobaeksan National Park. The largest percentage of respondents were reported that they visited Sobaeksan Nat'l Park for enjoying natural landscape. In group type, 62% were traveling with their asociates or friends. In activity characteristics. 62.9% were day-time visitors, and 37.8% mentioned carrying in their own food. The majority of visitors perceived that landscape interpretation boards were useful to understand Sobaeksan Nat'1 Park. Most respondents were not likely to intervene to stop other visitors' depreciative behavior.

• Journal of Ecology and Environment
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• v.41 no.4
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• pp.125-131
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• 2017

The ground beetles collected during the investigation period were nine subfamilies, 24 genera, 51 species, and 3504 ground beetles. Species richness was high in Pterostichinae has 24 species (47%), Harpalinae nine species (17.6%), Carabinae six species (11.8%), and Lebiinae three species (5.9%). Overall dominant species was Synuchus agonus, and dominance index was 0.361. Synuchus agonus was investigated as the dominant species in both Namcheon Valley and Geumseon Valley. Regarding subdominant species, it was Synuchus nitidus (52 individuals, 12.6%) and Synuchus cycloderus (52 individuals, 12.6%) in the order in Namcheon Valley, and it was Pterostichus orientalis orientalis (660 individuals, 21.3%) and Pterostichus audax (378 individuals, 12.2%) in the order in Geumseon Valley. Total species diversity index of ground beetles in Sobaeksan National Park was 2.917. By area, the number of collected ground beetles was smaller in Namcheon Valley than in Geumseon Valley. Sobaeksan National Park is located at the boundary of northern and southern parts in Korea and is a very important place in terms of geography and climate. Sobaeksan has been designated as a national park, and its ecosystem is relatively preserved well. If continuous investigation of basic data for ground beetles is conducted through long-term monitoring, the data can be used as key data to research mutual relationship with organisms, effects by climate change, and ecosystem change depending on human activities.

• Korean Journal of Environment and Ecology
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• v.6 no.2
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• pp.193-200
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• 1993

The freshwater fish fauna of the Sobaeksan National Park was censused during May 1992 to October 1992 at nine sampling stations to establish base line data for national conservation program on the National Park. Twenty seven freshwater fishes included 13 endemic species in Korea belonging to 9 families were collected in this region. Fifteen species were found in Hangang and 17 species were found in Nackdonggang. however common species were only 6 species. Dominant species. of this region were Zacco temminckii. Moroco oxycephalus. Liobagrus andersoni and Odontobutis platycephala. Morphological anomaly was appeared in 11 species include Zacco temminckii. Zacco platypus. Moroco oxycephalus. thus definitive analysis and consideration for natural conservation need to this situation.

• Journal of the Korean Geographical Society
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• v.34 no.1
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• pp.99-118
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• 1999

This paper aim to grasp the order region distribution of the goods, which are the sobaeksan ganodenma lucldum on the mail-order through post office and the poum jujube on the mail-order through agncultural Co- operalive and the regional connection made by distributing the goods between production region and sale region The amount of sales for sobaeksan ganodenma lucidum, with little regional difference in the producing volume, is not affected by the basic fare of a long-distance call in the spaual sale. It also shows that the amounl of poun jujude with regional difference of production volume is restricted by distance.

• Journal of Forest and Environmental Science
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• v.31 no.2
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• pp.126-135
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• 2015

This study was conducted to evaluate the ecological characteristics of forest cover types which were classified by cluster analysis in the natural forest of Sobaeksan on the basis of the vegetation data from the point-quarter sampling method. Recognized forest cover types were 1) Mixed mesophytic forest, 2) Taxus cuspidata forest, 3) Fraxinus rhynchophylla-Quercus mongolica forest, 4) Betula ermanii forest, 5) Pinus densiflora forest, 6) Quercus mongolica mixed forest, and 7) Quercus mongolica pure forest. For those of classified types, the species composition was expressed by importance value (IV) to describe the community floristically. The species diversity was quantified using the Shannon's diversity index. The results showed that the forest cover types were characteristically different from one another in growing species and compositional rates, depending upon the type which was formed by a number of similar vegetational sample points. Species diversity indices (H') of total and overstory both were the highest in the mixed mesophytic forest (3.530 and 2.880, respectively), and lowest in the Q. mongolica pure forest (2.122 and 0.000, respectively) with only one canopy species. The highest species diversity in the mixed mesophytic forest may due to the relatively high species richness and evenness in the forest cover types. The description on ecological characteristics were suggested to understand the formation and development of forest cover types in this study area.

• Journal of the Korean Society of Environmental Restoration Technology
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• v.26 no.3
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• pp.19-28
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• 2023

The purpose of this study is to estimate carbon dioxide emissions from soil microbial respiration by forest type of Sobaeksan National Park. As a result of estimating the annual soil microbiological respiration volume by forest type in Sobaeksan National Park, broad-leaved forests, coniferous forest, artificial forests were similar to around 19.5 CO₂-ton/ha/yr. In the case of coniferous forests in sub-alpine and grassland near Birobong Peak, 12.2 CO₂-ton/ha/yr and 8.1 CO₂-ton/ha/yr, respectively, were lower than general forest areas. And as a result of analyzing the changes in soil microbiological respiration rate according to forest type in Sobaeksan National Park, the soil microbiological respiration rate in coniferous forests, broad-leaved forests, artificial forests, and sub-alpine areas was the highest in the July survey in summer and the lowest in November in late autumn. The change in soil microbial respiratory volume according to the measurement time in Sobaeksan National Park was the highest between 12:00 and 16:00, when the soil temperature was generally the highest among the days. It is known that the soil temperature is relatively low and the amount of soil microbial respiration decreases during winter, and the change in respiratory volume over the measurement time during the day was the smallest in November, when the amount of soil microbial respiration was relatively smaller than the May-September survey. However, this study has limitations in revealing the causal relationship of various environmental factors that affect the soil microbial respiration. Therefore, it is suggested that long-term research and investigation of various factors affecting soil respiration are needed to understand the carbon cycle of forest ecosystems.

• Korean Architects
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• s.589
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• pp.88-93
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• 2018

• Korean Journal of Environment and Ecology
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• v.7 no.1
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• pp.58-71
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• 1993