• Journal of the Korean Geographical Society
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• v.48 no.5
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• pp.615-628
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• 2013

The waterfall can be formed by difference between the height of up and down part in new channel, is formed by channel avulsion that rapidly changing of river channel course. This study described types and processes of waterfalls by channel avulsion, and analyzed rates and factors of waterfall recession, on object to 7 waterfalls in South Korea. Bulyeong falls at Uljin-gun, Yongchu falls at Yeongdeok-gun, Jikyeon falls at Yanggu-gun and Gwangpum falls at Uljin-gun are formed by natural incised meander cutoff. Samhyeongje falls at Taebaek-si and Guryong falls are formed by river capture processes, and Palbong falls at Chungju-si is formed by artificial channel cutting for farm land secured. The locations of waterfalls gradually moved to upstream over time by head erosion. The recession rates were measured by 3~4m/ka on Bulyeong falls, Yongchu falls, Jikyeon falls and Samhyeongje falls, to estimate of formation age. Recession rates of these 4 waterfalls were analyzed that have clearly positive correlations with drainage area, precipitation, corrosion and weathering capability of bedrock, and initial height of waterfall.

• The Korean Journal of Mycology
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• v.37 no.2
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• pp.189-194
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• 2009

Author has carried out to survey on the fungal diversity from Yongnup swamp land, Yanggu-gun, Kangwon-do during the fruiting season over five years. During this survey 45 species and 3 varieties were recorded. Among them, Hygrocybe turunda (Peck) Bon var. sphagnophila (Peck) Bon was confirmed as an unknown species and Hygrocybe cruenta (Hongo) Hongo, Hydropus floccipes (Fr.) Sing. and Rhodophyllus setuliforme Kim Y. S. & Seok, S. J. were also found as rare species in Korea based on the examination of sporocarps and through previous literatures. Additional three species and two variety in Myxomycota, Hemitricha serpular (Scop.) Rostaf., H. clavata var. calyculata (Speg.) Y. Yamam, Badhamia affinis var. affinis Rostaf., Acyria cinerea (Bull.) Pers. and Metatricha vesparium (Batsch) Nann.-Bremk were also listed.

• Korean Journal of Plant Taxonomy
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• v.44 no.1
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• pp.59-76
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• 2014

This study was carried out to investigate flora of Mt. Dosol(Yanggu-gun, Gangwon-do). The vascular plants were summarized as 510 taxa, including 89 families, 281 genera, 438 species, 3 subspecies, 61 varieties and 8 forms. Among the investigated 510 taxa, 21 Korean endemic, 24 rare plants, 1 endangered plant and 122 specially designated plants by the Ministry of Environment were also included. The naturalized plants were 27 taxa. The percent of naturalized plants species and urbanization index were estimated as 5.3% and 8.4%, respectively. Usefulness of plants of 510 taxa listed consists of 201 taxa(39.4%) of edible plants, 186 taxa(36.5%) pasture plants, 144 taxa(28.2%) of medicinal plants, 56 taxa(11.0%) of ornamental plants, 16 taxa(3.1%) of timber plants, 8 taxa(1.6%) of miscellaneous plants and 4 taxa(0.8%) of fiber plants.

• Journal of Soil and Groundwater Environment
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• v.24 no.6
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• pp.26-32
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• 2019

An analysis of groundwater quality is significant for monitoring and managing water contamination and groundwater system. For the purpose of those, the geochemical characteristics of groundwater were studied over the concern for water quality, water type and origin of nitrate nitrogen. Total colony counts were detected in 11 out of 20 samples, and the average value was 31.73 CFU/ml. Range and average of NO₃-N concentrations were 0.9~24.0 mg/L and 8.3 mg/L. All groundwater types were found to be Ca²⁺-HCO₃^-. The range and average of NO₃-N were 0.2~17.4 mg/L and 8.7 mg/L, and those of δ¹⁵N were 1.7~8.9‰, and 5.0‰. Careful consideration is required for evaluating the origin of nitrogen when NO₃-N concentration is low. In general, noticeable difference between rockbed and alluvial water was not found. The ranges of nitrate origins by chemical fertilizer, livestock manure and domestic sewage, and natural soil were 29.6~76.4%, 14.2~58.9% and 2.6~7.0%, and the average values of those were 57.4%, 37.4%, and 5.3%, respectively. Origin of nitrate was affected by more chemical fertilizer than the other parameters. Rockbed water was more affected by chemical fertilizer than alluvial water.

• Journal of the Korean Society of Environmental Restoration Technology
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• v.17 no.4
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• pp.43-56
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• 2014

In this study, ecological investigation was performed on Yong-neup, Daeam-san for 5 times. This area is considered DMZ zone located between Yanggu-gun and Inje-gun, Gangwon-do, where has been recognized highly valuable for ecological preservation. As a result, Sphagnum and hydrophobic vegetation were found in Little Yong-neup, revealing its characteristics of high moor, where as no Sphagnum were found in Baby Yong-neup. Thereby, the carnification has been investigated in both Little Yong-neup and Baby Yong-neup. A main cause of damage was associated with the creation of stating rink and increases of visitors. The damages of vegetation in Little Yong-neup and Baby Yong-neup have been intensified by road construction or uses of groundwater while relocating military troops to upper stream of Little Yong-neup and Baby Yong-neup, further causing the damages of water circulation system and soil erosion. These artificial factors have caused the carnification of wetland protection areas including Little Yong-neup. The terrestrial vegetations, such as Plantago asiatica, Geranium Koreanum and Artemisia feddei have increased compared to current survey conducted by the Ministry of Environment. 5 endangered species, such as Lychnis wilfordii and Trientalis europaea and 5 other introduced species, such as Aster pilosus and Taraxacum officinale were found. 10 different species of mammal and 2 species of amphibian were investigated; and in addition to this, a original form of Sphagnum fens, the remaining wetland was found. Therefore, this study is to identify the causes of damages in Little Yong-neup and Baby Yong-neup through their ecological survey and accordingly proposing a direction for ecological restoration through the improvement of water circulation system, creation of habitats for plant and animal, restoration of vegetation through eco-friendly materials and indigeneity, relocation of the current military troops, securing of structural stability.

• Korean Journal of Plant Taxonomy
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• v.38 no.3
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• pp.333-343
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• 2008

Two newly naturalized species were recorded from Gangwon-do and Jeju-do. Among them, numerous populations of Hieracium caespitosum (Asteraceae) were found in 2006 along the road near the military area at, Mt. Dosolsan, Yanggu-gun, Gangwon-do. The other species, Trifolium incarnatum (Fabaceae) was widespread and found at various locations including Jeongsil and Woo-do in Jeju-si, Jeju-do and Gasioreum, Daejeong-eup, Seoguipo-si, Jeju-do and Daehandawon Plantation in Hoecheon-myon, Boseong-gun, Jeonranam-do in 2008. Hieracium caespitosum was found to be distinguished from the allied species, H. umbellatum in the same genus, by a lot of capitula and a well developed cluster of basal leaves during the flowering time. Trifolium incarnatum can be distinguished from other species in the same genus by an erect form, long inflorescence and deep-red flowers.

• Korean Journal of Plant Taxonomy
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• v.39 no.4
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• pp.254-263
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• 2009

The distribution and habitat characteristics of Echinosophora koreensis (Nakai) Nakai were investigated to compile basic data for conservation and restoration. The species Echinosophora koreensis is distributed within fourteen regions of the Korean Province of Gangwon, including Yanggu-gun, Inje-gun, Cheorwon-gun, Chuncheon-si and Hongcheon-gun. Natural habitats were located at altitudes of 192-626 m, with inclinations of $1-45^{\circ}$. One hundred and fifty seven vascular plant taxa were identified from 42 quadrats in 14 habitats. Dominant species among the woody plants, based on importance value, were Pinus densiflora and Quercus dentata in the tree (T1) layer, Quercus variabilis, Pinus densiflora and Quercus mongolica in subtree (T2) layer, and Fraxinus rhynchophylla, Prunus sargentii, Zanthoxylum schinifilium, and Ulmus davidiana var. japonica in the shrub (S) layer. Importance values for members of the herb layer were: Echinosophora koreensis 28.34%; Polygonatum odoratum var. pluriflorum 10.21%; Spodiopogon sibiricus 7.60%; Atractylodes ovata 4.77% and Carex lanceolata 4.13%. The importance values of the last four species were high, so they were at affinity with Echinosophora koreensis in their habitats. Average species diversity was 1.03, and evenness and dominance were found to be 0.82 and 0.16, respectively. The soil types were sandy loam and loam. Average field capacity was 13.28%, and the organic matter and soil pH were 6.70% and 5.77, respectively.

• Korean Journal of Agricultural and Forest Meteorology
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• v.13 no.2
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• pp.93-100
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• 2011

The study was conducted to investigate the correlation analysis between fruit quality and climatic parameters in grapevines. 'Campbell Early', one of the major grape cultivars, occupies more than 70% of cultivated areas in Korea. Recent research results have shown that the movement of cultivation area of fruit production resulted from the temperature increase. In this study, we investigated the relationship between fruit quality and climatic conditions in 13 major 'Campbell Early' grape producing areas (i.e., Sacheon, Jinju, Naju, Dangjin, Cheonan, Gimcheon, Yeongdong, Okcheon, Sangju, Suwon, Yeongju, Gangneung, Chuncheon, and Yanggu). The earliest and latest full blooming days of grapevines were ovserved on May 25 in Sacheon area and on June 7 in Yanggu area, respectively. At least 90 days are required for grapes to mature enough for the production of highquality fruits. The southern areas with less than 90 days of maturity period had difficulty in the production of good fruit. However, the areas with longer maturity period of 100 to 110 days produced grapes with with high sugar content and good coloring. The fruit qualities of 'Campbell Early' grapes are more closely related with temperature than other climatic factors. High temperature resulted in fruits with high acidity and delayed the coloration of the fruit skin in the southern area. The fruit skin was thin in the southern area and inclined to be thicker in the northern areas. Therefore, grape should be cultivated in regions with long maturity period to have high quality.

• Korea journal of population studies
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• v.31 no.2
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• pp.133-155
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• 2008

The purpose of this study is to examine the pattern and characteristics of population movement in Kangwon province. The data for this study were drawn from in- out- migration data established by Korea National Statistical Office(KNSO) between 2000 and 2007. Sample survey and depth interview were also used. The results showed that the population of all Si and Gun except Choonchun and Wonju declined. This decline of population in Kangwon province persisted during the last decades. The decline started with the industrialization in the 1960s and 1980s. The decline of population in Kangwon province continued in the 1990s and 2000s with the open agriculture policy rooted in UR and FTA. All Si and Gun can be classified into five groups in terms of population movement in Kangwon province between 2000 and 2007. The first group(Group B) is where in-migration from other Si and Gun and out-migration to Seoul and Kyunggi continues in the period. Choonchun, Wonju, and Sokcho belong to this category. The second group(Group C) is where out-migrarion to Seoul and Kyunggi is larger the in-migration. It includes Cholwon, Taebaek, Donghae, and Samchok. The third group(Group D) is where out-migration to Group B is larger than that of other places. Hwachun, Pyungchang, Hoegsung, Gosung, and Hongchun are included in this group. The fourth group(Group E) is where out-migration to both Group B and Seoul & Kyunggi is large. Youngwol, Gangnung, and Chungsun belong to this category. The fifth group(Group F) is where few population movement occurs. It includes Yangyang, Yanggu, and Injae. The findings also shows that the extent of population movement to Choonchun and Wonju is larger than that of Seoul and Kyunggi in recent period. This finding indicates that the effect of base city like Choonchun and Wonju has become in recent years.

• KSCE Journal of Civil and Environmental Engineering Research
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• v.43 no.3
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• pp.381-395
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• 2023

This paper presents a GIS-based site suitability analysis for a smart hydrogen energy plant in the Gangwon-Do region, South Korea. A GIS-based multi-criteria decision analysis (MCDA) was implemented in this study to identify the most suitable sites for the development of smart hydrogen energy plants. The study utilizes various spatial data layers, including hydrogen generation potential and climatic conditions, environmental and topographic conditions, and natural catastrophic conditions, to evaluate the suitability of potential sites for the hydrogen energy plant. The spatial data layers were then used to rank and prioritize the sites based on suitability. The findings revealed that 4.26% of the study area, or 712.14 km², was suitable for constructing smart hydrogen energy plants. Some regions of Cheorwon-gun, Chuncheon-si, Wonju-si, Yanggu-gun, Gangneung-si, Hoengseong-gun, and near the coastal region along the east coast were found to be suitable for solar and wind energy utilization. The proposed MCDA provides a valuable tool for decision-makers and stakeholders to make informed decisions on the location of smart hydrogen energy plants and supports the transition to a sustainable and low-carbon energy system. Decision-makers can use the results of this study to select suitable sites for constructing smart hydrogen energy plants.