• Journal of Wetlands Research
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• v.14 no.1
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• pp.101-120
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• 2012

We investigated the ecological characteristics of Jilmoe-neup conservation area which is one of wetlands designated as a Ramsar convention site in Mt. Odae from 2007 to 2011. Average out-flow of water was 0.80 $m^3/min$ during observation period. Average pH of water was 6.1, electric conductivity was 19 ${\mu}S/cm$ and contents of potassium, calcium and ammonium, nitrate and available phosphorus in water were recorded below average 2.0 mg/L. Peat layer was less developed than in other montane wetlands such as Yong-neup and Wangdeungjae-neup. Plants were recorded as 49 family, 118 genus, 163 species, 3 subspecies, 29 variety and 6 forma, total 163 taxa. Trientalis europaea L., which was designated in endangered level 2 by Ministry of Environment, inhabited at Sphagnum dominated area and Carex tussocks. Vegetation analysis showed that dominance value was changed as species distribution area were increased or decreased periodically. Although Jilmoe-neup deserved conservation value for Sphagnum fen which has diverse flora, it was affected from various factors such as ranch in the vicinity. Therefore, it must be monitored and managed continuously.

• Journal of the Korean association of regional geographers
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• v.5 no.2
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• pp.133-142
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• 1999

The wetland is very important ecologically as a habitat of diverse organisms. The purpose of this paper is to elucidate the morphogenetic environment of Jilmoe Bog found in the Odae Mountain National Park Jilmoe Bog is located in the high etchplain(1,060m) where Daebo Granite which had intruded in Jura epoch of Mesozoic era has weathered deeply and has uplifted in the Tertiary. The annual mean temperature of study area is $5.3^{\circ}C$, the annual precipitation is 2,888mm. The minimun temperature of the coldest month(january) is below $-30^{\circ}C$ and the depth of frozen soil is over 1.6m. Jilmoe bog consists of a large bog and a small bog. The length of the large bog is 63m and its width is 42m. The basal surface of Jilmoe bog is uneven. Jilmoe bog is a string bog fanned due to frost actions. In String bog, its surface is wavy with stepped dry hills and net-like troughs crossing hill slope. It seems that string bog is related to the permofrost or seasonal permofrost of cold conifer forest(taiga) zone(where the depth of frozen soil is very deep in the least in winters). String bog is a kind of thermokarst that frozen soil thaws differentially locally in declining permofrost and ground surface becomes irregular. There is turf-banked terracette of width $30{\sim}40cm$ in the headwall of small cirque-type nivation hollow formed at footslope of Maebong mountain around Jilmoe bog. This turf-banked terracette is formed by the frost growth of soil water below grass mat in periglacial climate environment. Where water is plentiful such as a nivation follow${\sim}$valley corridor and a headwall of valley, turf patterned grounds of width $30{\sim}50cm$ are found. This turf patterned ground is 'unclassified patterned ground', earth hummock. In conclusion, Jilmoe bog is a string bog of thermokarst that the relief of ground surface is irregular according to locally differentially thawing of permofrost(frozen soil). Jilmoe bog is high moor, its surroundings belongs to periglacial environment that turf-banked terracette and turf patterned ground are fanned actively.

• Korean Journal of Ecology and Environment
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• v.46 no.3
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• pp.409-418
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• 2013

Global warming due to climate change is a problem facing the entire world. Several factors, such as $CO_2O$ concentration, level of warming, soil temperature, precipitation, water content of soil and denitrification by denitrifying bacteria influence the emission of nitrous oxide ($N_2O$) from soil. In this study, we investigated nitrous oxide emissions from the soil of two wetlands, Jilmoineup in Mt. Odae and Moojechineup in Mt. Jungjok, according to temperature change. Soil collected in Jilmoineup in July showed increasing $N_2O$ emissions as temperature increases, but did not show any significant differences at $10^{\circ}C$ (p<0.05). Soil of $15^{\circ}C$ and $20^{\circ}C$ showed increasing pattern of $N_2O$ emissions until 24 h. After that, however, there was no difference in temperature. Overall, $N_2O$ emissions showed significant differences according to temperature (p<0.05). Soil collected from Moojechineup in July showed increasing $N_2O$ emissions according to temperature increase, but did not show any significant differences at $10^{\circ}C$ (p<0.05) as was the case for Jilmoineup soil. On the other hand, two wetland soils showed a slight increase of $N_2O$ emissions by additional nitrogen supply, but did not show any significant differences in the presence of nitrogen or between nitrogen sources. In conclusion, increasing temperature the wetland soil increased the emission of $N_2O$, which is a known greenhouse gas. In order to more clearly identify $N_2O$ emissions, various subsequent studies such as the influence and correlation of several factors are required.

• Journal of The Geomorphological Association of Korea
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• v.21 no.4
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• pp.69-83
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• 2014

This study examines vegetation and climate changes from pollen compositions of alpine moors in the Korean Peninsula such as Mujechineup at Mt. Jeongjok, Yongneup at Mt. Daeam, Jilmoineup at Mt. Odae and Wangdeungjaeneup at Mt. Jiri including moors at Mt. Jeombong. It can be found that the alpine moors were less interfered by human than low moors during the past 2,000 years of the historical age. Based on dominant periods of Pinus and Quercus, pollen compositions of the alpine wetlands, climatic environments of vegetation and historical records, vegetation and climate changes during three periods such as approximately 2,000~1,000 yr BP, 1,000~400 yr BP and 400 yr BP~present are examined. It was warmer during the period of 1,000~400 yr BP than 2,000~1,000 yr BP. The period of approximately 400 yr BP indicate the coldest climate of Little Ice Age. This study finds dominances of Quercus, low NAP/AP ratios, obvious divisions of pollen zones and human interference after 400 yr BP from pollen compositions of the alpine moors during the historical age. Human interference in the high moors becomes obvious after approximately 400 yr BP, indicating that there is a time lack of approximately 1,500~2,000 years between the alpine and low moors.