• Animal Systematics, Evolution and Diversity
• /
• v.14 no.4
• /
• pp.327-334
• /
• 1998

Four external and 27 cranial characters of three subspecies of striped field mice (Apodemus agrarius) from 15 regions in far eastern Asia(South Korea, North Korea, northeastern China, and far eastern Russia) were analyzed by multivariate methods in order to determine taxonomic status of striped field mice from North Korea. Three subgroups were recognized: a large-size form from two localities in South Korea(Cheju Island, Wando Island): a medium-size form from eight localities in South Korea and North Korea(Jindo Island, Kunsan, Mt. Chirisan, Cheongju, Mt. Weoleksan, Mt. taebaksan; Haeju, Sineuiju); a small-size form from five localities in North Korea, northeastern China, and far eastern Russia (Mt. Kumkangsan, Mt. Myohyangsan; Jirin, Yichun; Vladivostok). It is confirmed that the large-size form, the medium-size form, and the small-size form are subspecies chejuensis, coreae, and manchuricus, respectively, as noted by Koh et al.(1997). It is revealed that striped field mice(the medium-size form) from western region of North Korea (Haeju, Sineuiju) is classified into A. agrarius coreae, as noted by Thomas(1908), but striped field mice(the small-size form) from eastern region of North Korea(Mt. Kumkangsan, Mt. Myohyangsan) is A. agrarius manchuricus.

• Korean Journal of Environment and Ecology
• /
• v.30 no.3
• /
• pp.386-398
• /
• 2016

To understand the vegetation structure in the ridgeline area of Nakdong-jeongmaek, six primary areas in Nakdong-jeongmaek were selected and their vegetation distribution was surveyed considering the environmental conditions and artificial influences. According to the results of community classification based on TWINSPAN, the vegetation in the surveyed region was categorized into 9 groups: Betula costata-Quercus mongolica community, Q. mongolica community, Pinus densiflora-Q. mongolica community, P. densiflora community, Deciduous oaks-P. densiflora community, Deciduous oaks community, P. thunbergii community, P. koraiensis-P. rigida community, and Chamaecyparis obtusa-Alnus firma community. In Baekbyeongsan(Mt.) located in Taebaek-si of Gangwon-do, Betula costata-Quercus mongolica community was found, reflecting the environmental characteristics of northern temperate climate. P. thunbergii community appeared in Gudeoksan(Mt.) of Busan metropolitan city, which is near the coast. Since Gudeoksan(Mt.) is near to the downtown and its altitude above the sea is relatively low, people visit the area often. Therefore, C. obtusa and P. thunbergii have been planted for producing forest trees and implementing anti-erosion afforestation. In the other primary survey areas, Q. mongolica-dominant communities, P. densiflora-dominant communities, and deciduous oak-dominant communities, which are representative forest vegetation types of Jeongmaeks in South Korea, were mainly distributed, showing no significant difference compared to the forest vegetation types of other Jeongmaeks. Since the Nakdong-jeongmaek from south to north, it shows clear characteristics of vegetation changes between the northern temperate climate and the warm temperate climate of the south.

• Korean Journal of Environment and Ecology
• /
• v.27 no.4
• /
• pp.449-461
• /
• 2013

This study is contributed to examine the vegetation characteristics of the Quercus mongolica which are located in between two summits, hyangnobong and gitdaebaggybong, with dividing two regions(I, II). A total of 63 Quercus mongolica communities were enrolled in this survey. A~E, 5 communities were the result of analysed classification by TWINSPAN. Spatial distribution of the communities; 'A' community is concentrated at an altitude of about 1,300 meters in Mt. Taebaek(II region). 'B' and 'C' communities are concentrated at an altitude of between 700 and 1500 meters in Mt. Seorak and Odae(Iregion). 'D' and 'E' communities are concentrated at an altitude of below 1,100 meters in Mt. Cheongok and geumdaebong(II region), and also Mt. Seorak and Odae(Iregion). Arboral and shrub populations, maximum species diversity and height of arboral of each communities have a characteristic of decreasing according to increasing altitude gradually. And the result of studying on arboreal growth increment with up to 40-year-old trees, there is no special tendency with growth increment in the altitude of subnormal 1,100 meters, but there is a tendency that growth increment becomes lower in the altitude of more than 1,100 meters. In correlation analysis, it is -0.53 in the Quercus mongolica and Betula costata community at an altitude of over 1,000 meters, the correlation shows negative(-). It is +0.59 in the Quercus mongolica and Rubus crataegifolius community at an altitude of less than 1,000 meters, the correlation shows positive(+). And those are cognate trees with the correlation of Betula costata, Betula costata Trautv., Tripterygium regelii Sprague&Takeda., Acer barbinerve Maxim. With a summary of the results, the changes in the environment according to the elevation affect Quercus mongolica community.

• Journal of The Geomorphological Association of Korea
• /
• v.17 no.2
• /
• pp.1-13
• /
• 2010

The technique of mountain ordering developed by Yamada(1999) has been tested to two small islands (Namhaedo: 301km², Geojedo: 378km²). The results and experiences above were extended and applied to the whole area of the southern part of Korean Peninsula. Three areas such as Seorak-Taebaek Mountains, Jiri-Deogyu Mountains, and Youngnam Alps are identified as the highest, 5th order mountains. 10 areas are classified as the 4th order and 87 areas as the 3rd order. It is suggested that the 5th order mountains are related to the axis of uplift and the 4th and 3rd order mountains have the same direction (NE-SW) as that of the secondary mountain systems in the Korean Peninsula. The logarithmic values of number, area, and relative altitude of the ordered mountains have the linear relationship with the order, as the laws of stream order. The several mountains which are not included in the existing mountain systems could be identified among the ordered mountains, and those mountains could be used as the basis to understand the geological structure of the Korean Peninsula. Most of the National Parks and the Provincial Parks are distributed on the 3rd, 4th, 5th order mountains. It is especially confirmed that the Songnisan National Park take a role to link the Seorak-Taebaek Mountains and Jiri-Deogyu Mountains as a important ecological axis. Therefore, it would be validated that the technique of mountain ordering has the practical values as well as the geomorphological significances.

• Korean Journal of Plant Resources
• /
• v.36 no.4
• /
• pp.314-340
• /
• 2023

Vascular plants of Yeonhwasan Mt., located in Taebaek-si, Gangwon-do, were investigated. Field surveys were conducted fourteen times between April and September of 2022. A total of 505 taxa were found consisting of 87 families, 282 genera, 441 species, 15 subspecies, 41 varieties, and 8 forma. Among them, the endemic plants of Korea were 22 taxa. The number of threatened and near threatened Red List plants designated by the Korean National Arboretum was four, comprising each one of critically endangered (CN), endangered (EN), vulnerable (VU), and near threatened (NT) species. The number of floristic target plants designated by the Ministry of Environment was 102, including one taxon of level V, 9 taxa of level IV, and 34 taxa of level III. Invasive alien plants were 34 taxa, and three taxa were ecosystem disturbance plants. The urbanization index of investigated site was 12.8%, and the naturalization index was 6.7%. To wisely manage Yeonhwasan, measures for preserving biodiversity and preventing invasive plants are needed.

• The Journal of Engineering Geology
• /
• v.29 no.4
• /
• pp.579-598
• /
• 2019

We investigated geochemical contaminants and Fe, Al behavior in precipitates of acid mine drainage (AMD) from the Donghae abandoned coal mine, Taebaek, Gangwon Province using aqueous chemical analyses, XRD, IR, and ²⁷Al NMR, Our results showed that water chemistry changed with pH and Eh, and saturation indices of chemical species in the AMD. According to saturation calculated by visual MINTEQ, the AMD was saturated with various Fe-, Al-oxyhydroxide minerals. Reddish brown precipitates are composed of schwertmannite, ferrihydrite, and goethite, whereas whitish precipitates are composed mostly of alumimous minerals such as poorly crystallized basaluminite with trace Al₁₃-Tridecamer. It is important to apply active treatment methods rather than simple storage pond and to control the precipitation and solubility of iron species and aluminous species for ensuring remediation and control for the AMD discharged from the Donghae abandoned coal mine.

• Economic and Environmental Geology
• /
• v.23 no.1
• /
• pp.35-57
• /
• 1990

This study has been carried out on the Pegmatites, Naedeogri Granites, Nonggeori Granites and Metasedimentary rocks in the middle area of Taebaeksan region to investigate the geochemical properties and possibility of productivity. Pegmatites are characterized by metamorphosed anatectic pegmatite and differentiated magmatic pegmatite, and are mixed type of rare-element pegmatite and mica-bearing pegmatite by the classification of Ginsburg(1979). The petrological type of the igneous rocks is thought to be calcalkali, subalkaline and peralumious. According to chemical variations against D. I., differentiation trends from Naedeogri and Nonggeori Granites through non-mineralized pegmatites to mineralized pegmatites are supposed. From the relationship between oxided and $SiO_2$, pegmatites and Nonggeori Granite have shown similar tendencies and bulk composition of pegmatites and similar to metasedimentary rocks near the intrusives. By judging the correlations of trace elements, it is elucidated that pegmatites adjacent to Naedeogri and Nonggeori Granites have been originated in magma differentiation from these granites and the others have been differentiated by remelting or partial melting from metasedimentary rocks. $Sp_5$, $Sp_8$, and $Sp_9$ pegmatites are considered as productive rocks, and $Sp_4$, $Sp_6$, $Sp_7$, $Sp_{10}$, $Sp_{11}$, and $Sp_{12}$ pegmatites and granites are supposed to have a weak productivity, in terms of element ratios related with Sn mineralizations. Tourmalines in productive pegmatites are formed under the circumstance of Li-poor granitoids and associated with pegmatites, and the others are seemed to be originated in metapelites and metapsammites which are not coexisting with an Al-saturating phase. Three types of chemical zoning are noticed in tourmalines: (1) apparently homogeneous compositional patterns, (2) a continuous core-to-rim zoning and, (3) a discontinuous core-to-rim zoning. From results of EPMA of tourmalines, Al, Mg and Ca increase closer to rim, while Fe decreases.

• Applied Biological Chemistry
• /
• v.36 no.1
• /
• pp.23-28
• /
• 1993

Glucosinolates from radish (Wangkwan, Daejangkun, Taebaek, Daebooryeung and No. 364) and its seed (Wangkwan) were identified, and their degradation product by heat treatment was analyzed. The Wangkwan variety contained much more types of glucosinolates than other radish varieties. Total glucosinolate contents of Wangkwan, Daejangkun, Taebaek, Daebooryeung, No. 354 and Wangkwan seed by GC method were 1.25, 1.10, 0.97, 0.96, 0.90 and 2.14 ${\mu}mole/g$, respectively. The indoleacetonitrile contents after 20 minutes' heat treatment at $100^{\circ}C$ from Wangkwan, Daejangkun, Taebaek, Daebooryeung, No. 364 and Wangkwan seed were 0.28, 0.20, 0.23, 0.21, 0.24 and 0.58 ${\mu}mole/g$, respectively. The heat treatment increased the thiocyanate ion contents in radish and its seed, and the contents were maximum at 30 min.

• Korean Journal of Plant Resources
• /
• v.10 no.4
• /
• pp.275-291
• /
• 1997

Floristic composition and medicinal plant resources were investigated in six regions, Mt. Sorak, Mt. Jumbong, Mt. Odae, Mt. Hwaak, Mt. Taebaek, and Mt. Bangtae, represent in Kangwon province. This study was conducted from December. 1995 to October, 1997. Vascular plants in investigated regions were composed of 118 families . 529 genera, 1,138 species, 7 subspecies, 223 varieties and 43 fromae, totaling 1,411 taxa. This taxa was correspond to 34.7% of Korean flora, 4,071 taxa (Lee, 1996b),and 73.8% of Kangwon province flora, 1,913 taxa (Kangwondo, 1996), respectively. Among them, medicinal plant resources was composed of 98 families, 238 genera, 337 species, 63. varieties, and 16 formae, totaling 416 taxa (29.5% of investigated 1.411 taxa). Medicinal plant resources in each regions were distributed ranging from 211(31.4%) to 285(33.1%) taxa.

• Korean Journal of Environment and Ecology
• /
• v.19 no.1
• /
• pp.55-62
• /
• 2005

To investigate the fore,:t community structure in the Danggol valley of Taebaeksan (Mt.), area, 45 plots$(10m\times10m)$, were set up with a random sampling method. By cluster analysis the forest community in the study area was classified into three groups (Larix leptolepis community, Fraxinus rhynchophylla-Carpinus cordata community, Betula costata-Quercus mongolica community). There were strong positive correlations between Euonymus sachalinensis and Rhododendron schlippenbachii: Weigela subsessilis and Rhododendron schlippenbachii, Euonymus sachalinensis; Acer pseudo-sieboldianum and Acer tegmentosum; Quercus mongolica and Tilia amurensis. While there were negative correlations between Acer pseudo-sieboldianum and Tilia amurensis, Acer ukurunduense: Quercus mongolica and Acer ukurunduense; Pinus koraiensis and Euonyms sachalinensis Fraxinus sieboldiana and Magnolia sieboldii, Carpinus cordata, Acer mono. Species diversity(H') of the investigated area was $0.7932\~1.2077$.