• Title/Summary/Keyword: 고산

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Characteristics of Heavy Metal Components in $PM_{2.5}$ at Gosan in Jeju-do ; March in 2002 (제주도 고산에서의 $PM_{2.5}$ 중 중금속성분 특성 분석)

  • 문광주;한진석;공부주;홍유덕;김정은;김영준;최덕일
    • Proceedings of the Korea Air Pollution Research Association Conference
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    • 2002.11a
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    • pp.145-146
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    • 2002
  • 대기중의 유해 에어로솔의 장거리 이동에 대한 과학적인 자료를 마련하기 위해 2002년 3월 29일부터 4월 11일까지 제주도 서쪽 끝에 위치한 고산사이트에서 Filter Pack을 사용한 PM$_{2.5}$ 에어로솔의 샘플링을 수행하였다. 이로부터 제주도 고산지역 대기 중 PM$_{2.5}$ 중 중금속 성분을 측정하여, 오염물질의 배출원 추정 및 장거리 이동가능성을 검토하고자 하였다. (중략)(중략)

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Preservation Value of Endangered Alpine Coniferous Species (멸종위기 고산지역 침엽수종 보전가치 평가)

  • Sang-Hyun Lee;Dong-Hyoung Lee;Jun-Gi Byeon
    • Journal of Korean Society of Forest Science
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    • v.112 no.3
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    • pp.322-330
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    • 2023
  • Amid the recent intensification of climate change, the decline of subalpine coniferous species is evident. Accordingly, the Korea Forest Service is conducting research to establish conservation measures, identify the causes of the decline of subalpine coniferous species, and establish conservation strategies for seven species of conifers in the alpine region. This study used an economic value evaluation method to present objective data to inform the need for and value of conservation of endangered coniferous species through the recognition of endangered coniferous species and evaluation of conservation value among coniferous species conservation strategies in endangered alpine areas. A contingent valuation method was applied. As a result, the estimated conservation value per household of endangered alpine coniferous species was 49,181 won.

Variations of Background $CO_2$ Concentration and Estimation of Potential Source Region Contributing to Gosan through In-situ Measurement of Atmospheric $CO_2$ at Gosan (제주도 고산대기중 이산화탄소의 연속관측을 통하여 이산화탄소의 배경농도 변화추이와 고산의 이산화탄소농도에 영향을 추는 오염원을 추적)

  • Kim, Bun-Hui;Kim, Ju-Il;Kim, Gyeong-Ryeol
    • Proceedings of the Korea Air Pollution Research Association Conference
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    • 2007.10a
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    • pp.265-267
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    • 2007
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A formation Time of the Nocg Jae Cave in Bakoo Mt. (백두산녹제동형성시기에 관한 연구)

  • 유충걸;이광
    • Journal of the Speleological Society of Korea
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    • v.40
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    • pp.4-9
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    • 1994
  • 녹제동굴은 백두산천지의 서북쪽에 있는데 백운봉의 북쪽, 관일봉의 서남쪽, 지반봉의 북쪽산사면에 자리잡고 있다. 지반봉의 해발고도는 2603M이고 녹제동의 해발고도는 1900M이다. 그러므로 아고산사스레림대로부터 고산황막으로 과도되는 지대이다.(중략)

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Template Synthesis of New Polyazamacrocycles

  • Lee, Young-Hoon;Lee, Man-Kil
    • Proceedings of the PSK Conference
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    • 2002.10a
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    • pp.339.2-339.2
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    • 2002
  • Interest in the synthesis and chemistry of multidentate macrocyclic ligands is currently very high. Synthetic macrocycles arise from the fact that many biologically important molecules are metal complexes of macrocyclic organic systems: and in order to understand the mechanism of action of the naturally occurring complexes. chemists have resorted to the synthesis and study of so-called model systems. (omitted)

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The Climatic Change during the Historical Age inferred from Vegetation Environment in Alpine Moorsin the Korean Peninsula (한반도 고산습지의 식생환경과 역사시대 기후변화)

  • Yoon, Soon-Ock;Kim, Minji;Hwang, Sangill
    • 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.

Rehabilitation Measures for Disturbed Subalpine Meadows in Chirisan National Park, Republic of Korea (지리산 국립공원 아고산대 황폐나지의 식생복원공법 개발)

  • 오구균;우보명;김동완
    • Korean Journal of Environment and Ecology
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    • v.11 no.1
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    • pp.37-45
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    • 1997
  • The Nogodan area has maintained the subalpine meadows(m.s.l. 1,500m) in Chirisan National Park. A field experiment including fertilizing, introducing plants and mulching treatment was conducted for three years at artificially disturbed subalpine meadows in the Nogodan to find out effective revegetation measures. Factorial experiment(2*2*2) was applied to the subsoil sites with ten percent hillslope and the topsoil sites with forty percent hillslope. Regardless of site conditions, survival rates of plants were more effective in on-site conditions, showed significant increase in the number of individuals and crown coverage of vegetation, but mulching treatment did not show a significant effect.

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Effects of Human Trampling Disturbance on the Vegetation at the Subalpine Zone near the Peak of Mt. Sorak, Korea (답압이 설악산 아고산대의 식생에 미치는 영향)

  • 이규송;최오길;김석철
    • The Korean Journal of Ecology
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    • v.25 no.5
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    • pp.321-328
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    • 2002
  • In order to provide the basic information for restoration of vegetation, conservation of rare species and maintenance of biodiversity, changes of site factors and vegetation by human trampling disturbance were investigated at the subalpine zone near the peak of Mt. Sorak in Korea. The destructed vegetation was found mainly in the southern parts with gentle slope in this study area. Height and coverage of vegetation and the species diversity decreased, and the community structure depended on trampling strength. Soil moisture, organic matter contents and litter thickness in the site with destructed vegetation by human trampling showed lower values than in the undisturbed site. Soil depth decreased, and gravel exposure on the ground surface increased by soil erosion responded to trampling strength.

Conservation Measure of Sajapyeong Alpine Wetland (사자평 고산습지의 보전대책)

  • Son, Myoung-Won
    • Journal of the Korean association of regional geographers
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    • v.17 no.2
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    • pp.141-149
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    • 2011
  • The formation of Sajapyeong Alpine Wetland was influenced by factors of drainage basin and its geology, and fire-shifting cultivation. Sajapycong drainage basin had a narrow outlet, Sijeon-cheon in it flowed relatively slowly. Bedrock in basin was weak to mechanical weathering, many rock detritus were, produced. Deforestation for reclamation using fire accelerated topsoil loss. Thus much sediments was supplied to Sijeon-cheon and deposited in the channel bed, and wetland was formed on channel marginal footslope. In Sajapyeong moor were Gullies formed along road. Because they blocked sediments and throughflow transferring into moor, moor became dry land. In order to prevent this drying, we have, to raise water level of a drain ditch to level of weathered bedrock to transfer throughflow into moor, modify the shape of ditch to be naturally irregular, and construct large boulders step on the Sijeon-cheon bed to prevent from lowering of its bed.

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Analysis of Variation of East Asian Monsoon (겨울철 동아시아 계절풍의 변화에 대한 연구)

  • Yewon Shin;Dong-Il Seol
    • Proceedings of the Korean Institute of Navigation and Port Research Conference
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    • 2023.11a
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    • pp.46-47
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    • 2023
  • 겨울철에 동아시아는 시베리아 대륙으로부터 부는 북서계절풍의 영향을 크게 받는다. 지속성이 강한 계절풍은 선박의 안전운항과 기상재해에 큰 영향을 미친다. 이 연구에서는 30년간(1992-2021년)의 장기간의 데이터를 이용하여 동아시아에 위치해 있는 우리나라와 일본에서의 겨울철 계절풍의 변화를 분석하였다. 분석한 결과는 다음과 같다. 우리나라 서해안에 위치한 군산에서의 풍속은 시간의 흐름과 함께 약해지는 경향을 보이나, 인천에서는 큰 변화가 보이지 않는다. 우리나라 제주도에 위치한 고산은 다른 두 지역보다 월등히 강한 풍속을 보이나, 이 지역 또한 시간의 흐름과 함께 풍속이 약해지고 있음을 확인하였다. 인천, 군산 및 고산 중에서 풍속이 가장 강한 곳은 고산이고, 그 다음은 인천, 군산의 순이다. 일본의 아키타, 와지마, 하마다의 겨울철 풍속은 세 지역 모두 점진적으로 약해지고 있으나, 2000년에 세 곳 모두 풍속이 급격히 강해진 특징을 보였으며 2005-2007년에는 풍속이 다시 약해졌다. 풍속이 가장 강한 곳은 아키타이며, 그 다음으로는 하마다, 와지마 순이다. 우리나라와 일본을 비교하였을 때, 고산을 제외하고는 일본이 우리나라보다 평균적으로 풍속이 더 강한 양상을 띠고 있어, 서해보다 동해에서 계절풍이 더 강하게 불고 있음을 확인하였다.

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