• Title/Summary/Keyword: 지역 변이

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Analysis and Comparison of Community Structural Attributes by Topographic Positions and Aspects in the Natural Deciduous Forest (천연활엽수림의 지형적 위치와 사면방위에 따른 군집 구조적 속성 분석 및 비교)

  • Yang, Hee-Moon;Kim, Ji-Hong
    • Journal of Forest and Environmental Science
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    • v.18 no.1
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    • pp.73-86
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    • 2001
  • Taking account of the structural variation on species composition according to the different topographic positions and aspects, the forest community attributes such as species composition, species diversity index, and similarity coefficient were comparatively analyzed for the three topographic positions and the four aspects in the natural deciduous forest of Mt. Gari area. The results are as follows 1. The most dominant species in the overstory were Quercus mongolica in the mid-slope, the ridge, and all aspects areas, however, the stands of the topographic positions were less similar than the stands of the aspects in species composition, because of the appearance of the specific domonant species such as Juglans mandshurica in the valley area and Pinus densiflora in the ridge area. 2. Among the three topographic positions, the mid-slope area had greatest species diversity index in overstory, but the index of the valley had greater value than those of mid-slope and ridge in mid-story and understory. The north-east area among the aspects had greatest the index in all canopy layers. However, The stands of the aspects showed more smaller variation than the stands of the topographic positions. 3. The ridge area showed greatest similarity coefficient value with the mid-slope area, but showed least similarity coefficient value with the valley. However, similarity coefficient among the topographic positions had much smaller value than similarity coefficient among the aspects.

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Direction toward Economic Development of Southwest Area of Jeonnam Province through Construction of Airport and Port Supporting Complex (공항만배후단지 조성을 통한 전남 서남권 경제발전방향에 관한 연구)

  • Park, Soomyung
    • Journal of Korea Port Economic Association
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    • v.29 no.3
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    • pp.39-72
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    • 2013
  • As a regional development gap between Southwest and Southeast of Jeonnam Province are becoming more serious, it is highly time to come up with measures for the balanced development of the two areas. This paper suggests construction of the Airport and Port Supporting Complex in apparent efforts to reduce the gap between the two areas and facilitate the Southwest economy. The Supporting Complex aims to constitute a triangle industrial cluster which is classified into the following three categories; 1. Traditional competitive industries 2. New growth engine industries 3. Attraction of companies u-turning from abroad such as China etc. To provide one-stop service through set-up of R&D Business Center is the heart of this triangle core. This paper had LQ and Shift&Share Analysis in an attempt to search for competitive industries among the traditional industries in Mokpo-si(city) and Muan-gun(county) of Jeonnam Province. As a result of the analysis, metal manufacturing industry and metal-working process products industry have been found competitive in the two areas. Among the new growth engine industries, this paper suggests precision instruments industry and advanced parts industry for utmost strengths of airport and port while u-turning industries from abroad include higher value-added textile industry and fashion industry. It is expected that all of above-mentioned industries for the triangle industrial cluster will contribute to laying the groundwork to develop regional economy further and create more jobs in the Southwest area of Jeonnam Province.

Effects of Road on Bird Communities in Forest Areas (산림 지역의 조류 군집에 대한 도로의 영향)

  • 허위행;임신재;이우신
    • Korean Journal of Environment and Ecology
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    • v.17 no.1
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    • pp.1-8
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    • 2003
  • This study was conducted to investigate the effects of road on bird community by line transect census method from May 2000 to January 2001 in Mt. Geumsan, Namhae-Gun, Kyeongsangnam-do. Canopy layer was more developed in forest area than road area. Understory vegetation of road area was more developed than forest area. Twenty six and twenty three bird species were observed in road and forest area, respectively, White's thrush and ashy minivet were observed just only in forest area, and Siberian blue robin, blue-and-white flycatcher and gold crest were in road area. The birds being to bush nesting and foraging guilds in road area were more than forest area. It is known that the road construction was negatively affected on bird community. However, road construction would be not so negative on bird community according to the results of thie study. It would be needed the maintenance of upper canopy layer and understory vegetation to reduce negative effect of road on bird communities in forest area.

Comparative Research on the Vegetation and Changes of Microclimate on the Fire Damaged and Undamaged Areas (산림피해림지와 무피해림지의 식생과 미기상변화에 관하여)

  • Kim, Woen;Chong Un Ri;Uen Ho Lee
    • The Korean Journal of Ecology
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    • v.4 no.3_4
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    • pp.109-113
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    • 1981
  • The area damaged by the fire effect, most serious artificial damage of forest, was measured to analysis vegetation structures and changes of microclimate at the region of the Pal-gong mountain. Vegetation of whole investigated area was Querceto-Pinetum with rich differetial species. But at the areas fire damaged and undamaged, few differential were noted. The two communites appear physiognomical different of temperature according to height an ddepth at the area of damaged was 11:00 a.m. and 13:00 p.m. at undamaged area. On the whole, high temperature distribution at the damaged area and sensitive reaction by the changes of solar radiation were noticed. Changes of humidity according to height were few, but the saturating deficient at 13:00 p.m. at the whole investigated area extremely high and sensitive at the damaged area.

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A Review of Regional Climate Change in East-Asia and the Korean Peninsula Based on Global and Regional Climate Modeling Researches (전구 및 지역기후 모델 결과에 근거한 동아시아 및 한반도 지역기후 변화 전망 연구 소개 및 고찰)

  • Hong, Song You;Kwon, Won Tae;Chung, Il Ung;Baek, Hee Jeong;Byun, Young Hwa;Cha, Dong Hyun
    • Journal of Climate Change Research
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    • v.2 no.4
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    • pp.269-281
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    • 2011
  • In this review, numerical model results from global and regional climate models are introduced to regional detailed climate changes over East Asia and Korea. In particular, regional climate change scenarios in this region, which are created by several research groups in Korea based on Special Report on Emissions Scenarios (SRES) of IPCC 4th assessment report are introduced and characteristics of the scenarios are investigated. Despite slight differences in intensity, all scenarios reveal prominent warming over the Korean peninsula in future climate. Changes in precipitation amount vary with given scenarios and periods, but the frequency and intensity of heavy precipitation generally tend to increase in all scenarios. South Korea except for mountainous regions is expected to change into subtropical climate in future, which accompanies distinct changes in ecosystems and seasons.

Pollution Characteristics of Hazardous Elements for Roadside Dust in Gwangju City, Korea (광주광역시 도로변 분진에 대한 유해원소의 오염특성)

  • Lee, Jang-Jon;Park, Young-Seog;Kim, Jong-Kyun;Han, Min-Su
    • Economic and Environmental Geology
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    • v.40 no.3 s.184
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    • pp.263-275
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    • 2007
  • The purpose of this study was to show the pollution characteristics of hazardous elements from roadside dust in the Gwangju city. We collected 47 samples from November to December in 2004 and separated four groups such as residential area, industrialized area, downtown area and heavy traffic area fer characteristics comparison on hazardous elements. Roadside dust mostly consisted of quartz, albite, microcline, muscovite in XRD analysis. Content of hazardous elements varied: As $3.4{\sim}11.9 ppm$, Cd $0.2{\sim}28.2 ppm$, Co $32{\sim}526 ppm$, Cr $25{\sim}526 ppm$, Cu $11{\sim}375 ppm$, Ni $14{\sim}247 ppm$, Pb $13{\sim}413 ppm$ and Zn $101{\sim}972 ppm$. Average contents of hazardous elements of Zn>Cu>Pb>Cr>Co>Ni>Cd. Content of hazardous elements was low in residential area, whereas that of heavy metal was much the same in both in heavy traffic area. Content of hazardous elements such as Cd, Co, Cr, Cu, Ni, Pb, Zn was found to be particularly high in industrialized area. According to these results it was possible to presume that industrialized area was affected by industry activity such as machinery, petrochemical, automobile and electronics industry. The SEM analysis, detected Pb, Cr, Ni, and Fe particles in samples of industrialized area contaminated by industry activity. The correlation coefficient table resulted from the samples of roadside dust showed that there was same direction increase of content between elements. In other words, when the content of Cd increase, Cr and Ni increase, as Cr increase, Cu and Ni increase, as Cu increase Ni increase and Pb increase Zn increase. Based on these results it was possible to predict and interpret similar contamination patterns in this study.

S-R Variation and Antimicrobial Susceptibility of Escherichia coli Isolated from Mastitic Cows, Diarrheal Pigs and Diarrheal Chickens (젖소유방염, 돼지 및 닭의 설사중에서 분리한 대장균의 S-R 변이와 항균 요법제의 감수성)

  • 정희곤
    • Journal of Environmental Health Sciences
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    • v.23 no.3
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    • pp.50-55
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    • 1997
  • 1992년부터 1995년까지 약 4개년 동안 전남 지역에서 사육하고 있는 가축의 유병률을 조사한 결과, 유방염으로 의심이 되는 젖소 970두 중에서 180두(18.6%)가 유방염에 이환되었으며, 돼지 2,400두 중에서 84두(3.5%)가 설사증에 이환되었고, 닭 1,010수중에서 9수(0.9%)가 설사증에 이환되었다. 대장균의 분리율을 조사한결과, 유방염에 이환되어 있는 젖소 180두중 37두(20.6%)에서 대장균이 분리되었으며, 설사증에 이환되어 있는 돼지 84두중 51두(60.7%)에서 대장균이 분리되었고, 설사증에 이환되어 있는 닭 9수중 5수(55.6%)에서 대장균이 분리되었다. Acriflavine을 이용하여 대장균의 S-R변이를 조사한 결과, S-R변이는 mercuric chloride, cysteine, caffeine, glucose, nicotine 등의 순으로 나타났는데, 이중 mercuric chloride가 가장 감수성이 높았다. 대장균의 항균요법제에 대한 감수성은 naxcel, linsmycin, cephalexin, gentamycin등이 높은 감수성을 나타내었는데, S-R변이 후에는 감수성이 일반적으로 저하되는 경향이었다.

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Chemical Component of Mugwort (Artemisia princeps Pampanini) leaves Collected in Korea (수집약쑥의 유효성분 함량변이)

  • Ryu, Su-Noh;Han, Sang-Suk;Kim, Kwan-Su;Jeong, Hae-Gon
    • KOREAN JOURNAL OF CROP SCIENCE
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    • v.51 no.spc1
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    • pp.220-223
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    • 2006
  • Mugwort, Artemisia princeps Pampanini, has been used as natural medicine traditionally in the far east countries including Korea. This study was performed with the object of provoding basic data an leaf quality improvement in mugwort. The 210 mugwort were collected in 48 locations from 2004 to 2006, leaves of 210 genotypes collected were analyzed for eupatilin, jaceosidin and sesamin content. The eupatilin content was averaged to 43.8mg (100 g leaves) and ranged from 0 to 228.0 mg. The average jaceosidin and sesamin contents were 12.8 mg and 3.58 mg and the ranges of those were 0 to 73.8 mg and 0 to 6.56 mg, respectively. The eupatilin content of mugwort harvested in the western region was higher compared with those harvested in the resemble altitude of the southern and eastern of Korea.

Phylogeny of Bombyx mandarina inhabiting Korea analysing the isozyme and hemolymph protein polymorphism (동위효소와 체액단백질 분석에 의한 한국산 멧누에나방의 지역적 특성)

  • 이재만;김경아;노시갑
    • Journal of Sericultural and Entomological Science
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    • v.45 no.1
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    • pp.18-24
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    • 2003
  • B. mandarina of Korean population apparently differs B. mori in isozyme analysis. Fourteen polymorphism occurred B. mandarina not in B. mori at 6 isozymes, Bph, Bes, Amy-hc, Ies, Ict-D, Ict-E. Korean population has shared with the Korean native strain of B. mori in B genotype of Bes, F of Amy-hc, n of Ict-E, M and S of Ict-H. These 5 genotype were known that detection only Korean native strains of B. mori. Nei's genetic distance based on the genotype of isozyme and hemolymph protein using 4 populations of B. mandarina varied from 0.0350 to 0.0624. The distances of 0.0350 is between Jinju and Chilgok population and between Jinju and Kosung population has the largest distances, 0.0624. In genus of Bombyx, B. mandarina and B. mori, genetic distance varied from 0.3822 to 0.5074. Phylogenetic tree obtained using the subprogram UPGMA of NTSYS represented that Bombyx devided two group, B. mandarina and B. mori. B. mandarina has genetic differences according to the population within the Korean peninsula, but that was not recognized genetic variation or divergence considering low values of genetic distance.