• The Korean Journal of Zoology
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• v.35 no.1
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• pp.107-114
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• 1992

A new species, Psylla Koreana, arising on the Acer is described from Korea, and nineteen psyllid species from Mt. Sobaek are listed.

• Journal of Korean Society for Atmospheric Environment
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• v.12 no.4
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• pp.399-406
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• 1996

Acidic fog is catastrophic to aviation and potentially affect materials, vegetation, crops and public health. This paper was carried out to investigate the chemical features of fog sample at Mt. Sobaek (mean sea level : 1, 340m) from June to August 1995. Each sample was analyzed for pH, electrical conductivity and major ions (anion : $Cl^N)_3^-, SO_4^{2-}, cation : Na^+, NH_4^+, K^+, Mg^{2+}, Ca^{2+}$) by ion chromatography. The quality analysis of fog sample data was performed based on ion balance and electrical conductivity method. The wind directions are subdivided into the northerly and southerly wind according to the wind direction data at the Sobaek-san meteorological observation station. Statistical analyses were performed on the complete set of results in order to obtain a description of fog sample. All the statistical treatment was carried out using the SPSS/PC + software package. The major ion concentration of fog samples was higher for the northwesterly wind cases than sourtheasterly wind cases. The pH of fog sample varied between 2.95 and 6.08. The average pH and electrical conductivity of total sample (n=210) were 4.39 and 113.0 $\mu$S/cm, respectively. It may be noted that in nearly all the cases, the dominant major ions in the fog sample at Mt. Sobaek were $SO_4^{2-}, NO_3^-, H^+ and NH_4^+$.

• Journal of the Korean Wood Science and Technology
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• v.26 no.3
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• pp.81-92
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• 1998

Lately public interest in tree saps of maple and birch trees has been increased for sap drink as a natural medical beverage. To ensure tree sap drink for commercial production, species which are available in resources, their ecological regeneration characteristics in the natural forest stand, and tree sap resources should be investigated. Species for the collecting tree saps and their distribution were surveyed in the areas of Mt.Sobaek, Tanyang-gun, Chungcheongbuk-do. Mt.Sobaek area was selected to the proper place to survey as the feasible area for tapping tree saps for the natural beverage. Feasible tree species of this area are Betula costata, Betula schmidtii, Comus controversa, Acer mono, and Acer pseudosieboldianum based on the estimated tree sap amounts. Average and maximum species diversities of surveyed area were 4.2 and 5.39, respectively. Its evenness 0.78 referred that there are actively progressing ecological regeneration among diverse tree species. Tree saps are mainly harvested at the areas of upper and lower Wonmanteo. In terms of species, the most high sap amounts were from birch sap, next Comus controversa, the 3rd Acer mono. Many measures were suggested ecologically and technically, for commercial or practical production of tree sap drinks, though Mt.Sobaek area was evaluated as improper place because of geographical and transportational limitation.

• Solar Energy
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• v.16 no.2
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• pp.49-63
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• 1996

Site elavation is one of the major factors which is influencing the incoming insolation. Because nonpermanent gases like ozone, water vapor are unmixed components of the atmosphere and their concentrations are function of height, the site elevation effects the relative proportion of the atmospheric constituents. We have measured solar radiation on Sobaek(1,350m) and in Poonggi area(280m). These values were compared to investigate the their charateristics and the potential for the solar utilization as an alternative energy for both high altitude area and low altitude area. From the results, we conclude that 1) Yearly mean 4,093 $kcal/m^2$. day of the horizontal global radiation in Mt. Sobaek was evaluated for clear day. 2) Insolation on Mt. Sobaek is $6{\sim}7%$ higher than Poonggi area during summer and winter seasons. 3) A significant difference of atomospheric clearness index is observed between Mt. Sobaek and Poonggi area at the same latitude.

• Journal of Korean Society of Forest Science
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• v.83 no.3
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• pp.365-371
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• 1994

This study was conducted to investigate variations in taxol contents of bark, shoots, needles of three native Taxus species in Korea. Sample materials were collected in early October of 1992 from five individual, trees each of the five populations of Taxus cuspidata located at Mt. Halla, Mt. Jiri, Mt. Deokyu, Mt. Sobaek, and Mt. Taebaek and two individual trees of Taxus cuspitosa in Mt. Seolak and in March of 1993 from the five individual trees of Taxus cuspidata var. latifolia in Ulleung Island. The collected materials were analyzed by HPLC to determine the amount of taxol content. Regardless of species and population, the taxol content was highest in bark and followed by shoots and needles. In Taxars cuspidata the taxol content in the bark was highest for the population of Mt. Halla (0.017%) and decreased in the order of Mt. Jiri, Mt. Sobaek, Mt. Deokyu, and Mt. Taebaek. The taxol content in the shoots was highest for the population of Mt. Halla(0.0053%) and decreased in the order of Mt. Sobaek, Mt. Jiri, Mt. Deokyu, and Mt. Taebaek. The taxol content in the needles was higher for the population of Mt. Halla(0.0013%) than any other populations and decreased in the order of Mt. Taebaek, Mt. Sobaek, Mt. Deokyu and Mt. Jiri. The taxol contents of Taxus caespitosa(0.0035%) were lower than that of Taxus cuspidate in all of the three plant parts. The taxol content of Taxus cuspidate var. latifolia(0.0064%) was higher than that of Taxus cuspidate for shoots and needles, but lower than that of Taxus cuspidate. There was a tendency of increasing taxol contents of bark and shoots of Taxus cuspidate, as latitude decreased. This study indicated that taxol content was relatively high in the populations of Taxus cuspidate. Particularly taxol content in the bark of the Taxus cuspidate in Mt. Halla population was about the same as that of pacific yew, indicating a high potential for commercial use.

• Asian Journal of Turfgrass Science
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• v.10 no.3
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• pp.213-230
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• 1996

A study of occurrence and distribution of cellular slime molds(CSMs) in forest soils of central areas of Korea was carried out. Samples for CSMs isolation were collected from 4 study sites; Mt.Kyeryong, Mt. Taebaek, Mt. Sobaek and Mt. Sokri. In Mt. Kyeryong, six species were found. These were Dictyostelium fasciculatum, D.firmibasis, D. mucoroides, D. minutum, D. brefeldianum and Polysphondylium pallidum. The average number of species isolated at one site was 0.75, and average density(clones /g soil) was 292. The results of soil sample analyses were that the concentration of Pb was higher than any other areas. In Mt. Taebaek, seven species were found; D. fasciculatum, D.firmibasis, D. mucoroides, D. miuutum, P.pallidum. P. violaceum, P. candidum. The average number of species isolated at one site was 2.3,and average density was 1,108. Based on importance values calculated from study sites within each of three elevation ranges, several of the more widely distributed and abundant species have distribution patterns that show a response to elevation. In Mt. Sobaek, eleven species were found. These were D. fasciculatum. D.firmibasis, D. mucoroides, D. miuutum, D. brefeldianum, D. crassicaule,D. deminutivum, D. implicatum, P. pallidum. P. violaceum and P. candidum. The average number of species isolated at one site was 3, and average density was 793. Species diversity appeared to be the highest in this area. In Mt. Sokri, six species were found. These were D. fasciculatum. D. mucoroides, D. minutum, D. purpureum, P. pallidum. and P. violaceum. The average number of species isolated at one site was 2.4 and average density was 858. It was noticeable that D.purpureum were much more comrnonly found in this pinus evergreen forest. Key words: Cellular slime molds(CSMs), Importance value, Elevation, Average number of species, Average density.

• Proceedings of the Zoological Society Korea Conference
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• 2000.10a
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• pp.99.3-99
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• 2000

No Abstract, See Full Text

• Korean Journal of Plant Taxonomy
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• v.31 no.4
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• pp.343-358
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• 2001

We have examined the pedicel pubescence and other major morphological characters of 11 putative hybrid populations of Aconitum subgn. Aconitum at Mt. Sobaek to understand their origin. These populations show very complicated patterns of variation in pedicel pubescence ; they contain individuals having pedicels (1) completely glabrous, (2) with few micropapillate curved hairs near the receptacle, (3) moderately pubescent with micropapillate curved hairs from middle to upper portion, (4) sparsely pubescent with a mixture of micropapillate curved hairs and smooth-surfaced spreading glandular hairs near the receptacle, and (5) moderately pubescent with both types of hairs but from middle to upper portion. All five types of individuals co-occur in most populations with varying proportions. These results, in conjunction with evidence from the analysis of other major morphological characters, suggest that the populations at Mt. Sobaek were derived from the multiple hybridization events involving A. kusnezoffii, A. japonicum subsup. napiforme, and A. jaluense subsp. jaluense. In addition, the absence of "typical" forms of these putative parental taxa in Mt. Sobaek area suggests that repeated introgression has probably occurred in these populations.

• Korean Journal of Microbiology
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• v.14 no.2
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• pp.57-64
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• 1976

About 300 specimens belong to the Basidiomycetes are collected from Solbaek and Andong areas. 44 genera and 50 species including lepista subnuda, Pholiota squarrosoides and Craterellus aureus, which are unrecorded in Korea, are identified according to the Imazaki-Hongo's classification key.

• Proceedings of the Zoological Society Korea Conference
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• 2003.08a
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• pp.119.4-119
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• 2003

No Abstract, See Full Text