• 제목/요약/키워드: Ganghwa Is.

검색결과 125건 처리시간 0.027초

강화도(江華島) 동남부(東南部)에 분포(分布)하는 소위(所謂) 강화섬장암질암(江華閃長岩質岩)에 대(對)하여 (Petrology and petrochemistry of the so called "Ganghwa syenitic rock" in southeastern part of Ganghwa Island)

  • 김용준;오민수
    • 자원환경지질
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    • 제11권2호
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    • pp.47-57
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    • 1978
  • The study focused on the petrology and petrochemistry of the so called "Ganghwa syenitic rocks" which intruded into metasediment of basement in southeastern part of Ganghwa Island. The geologic sequence of the mapped area was shown in table 1, 10 model analyses and 7 chemical analyses on the rock samples taken from the Ganghwa syenitic rocks and Manisan granite have been used to discuss the nomenclature of the rocks and petrological relationship between rock types. The petrograpical and petrochemical features based on, the analyses are as follows: 1) Ganghwa syenitic rocks consist of Ganghwa alkali syenite and Ganghwa diorite porphyry which based on the classification of the subcommision on systematics of igneous of IGUS. Ganghwa diorite porphyry which occured as dike forms are intruded into Ganghwa alkali syenite. The rock forming minerals of Ganghwa alkali syenite are composed of perthite, plagioclase, quartz, hornblend and chlorite in major, and zircon, apatite, sericite and magnetite in minor. Ganghwa diorite porphyries consist of plagioclase, biotite, hornblend, orthoclase and chlorite, with, porphyritic texture. 2) In silica-oxides variation (Fig. 2) and AMF diagram (Fig_ 3), the Ganghwa alkali syenite is similar to the trend of Daly's average basalt-andesite-dacite-rhyolite than Skaergaard which shows the trend of the fractional crystallization of magma, and equivalent to the alkali rock series by Peacock. 3) The general trend of data points shift to plagioclase, and are superimposed on the alkali rich terminal part of the granodiorite province of SW Finland in normative Q-Kf-Pl(Fig. 4) and Or-Ab-An diagram respectively. The above-mentioned evidences suggested that the Ganghwa syenitic rocks are the differential products resulted by assimilation of intermediated magma and metasedment rock under relatively rapid cooling condition.

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강화 지역의 인삼 재배 역사 (The history of ginseng cultivation in Ganghwa area)

  • 이성동
    • 인삼문화
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    • 제2권
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    • pp.9-16
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    • 2020
  • 우리나라 한방 의서 중 인삼의 첫 기록은 고려 시대 임시 수도인 강화 도읍기 때 강화도에서 출간된 향약구급방에 나타나 있다. 강화지역에서 인삼재배의 시작은 1100년경부터 시작되었을 것으로 사료 된다. 본격적인 인삼재배 시작은 1920년경 개성인삼조합의 특별구역으로 지정되면서부터였고, 1950년 한국전쟁 시작 때까지 계속되었다. 1953년 휴전 이후부터 강화지역에서 인삼재배가 다시 시작되었다. 1967년에 강화삼업조합이 창립되었으며, 이때 재배 면적이 약 200ha(60만평)이었고, 1974년에 약 900ha(270만평)으로 증가 되었다. 따라서 강화는 1970년대 중반기에 우리나라 전국 시, 군 가운데 인삼재배 면적과 생산량이 가장 높은 지역이였다. 강화지역에서 생산되는 인삼은 주로 6년근이고, 홍삼원료로 사용되어 국내 인삼생산지로 더욱 유명하게 되었고, 그 명성이 현재도 계속되고 있다.

강화도 남부 갯벌퇴적물에서 산소 미세전극을 이용한 산소소모율 추정 (Estimation of Oxygen Consumption Rates by Using an Oxygen Microelectrode in Ganghwa Intertidal Flat)

  • 김동선
    • Ocean and Polar Research
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    • 제28권2호
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    • pp.119-127
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    • 2006
  • We measured oxygen microprofiles using an oxygen microelectrode in Ganghwa intertidal flat in April and September. Oxygen consumption rate was calculated by using three different methods based on the oxygen microprofiles. The method using the PROFILE software was thought to be the most reliable among the three methods. The oxygen consumption rates calculated at station D1 by using the PROFILE software were 10.5 and 6.27mmol $m^{-2}d^{-1}$ in April and September, respectively. At station D2, they were 10.9mmol $m^{-2}d^{-1}$ in April and 5.39 mmol $m^{-2}d^{-1}$ in September. There was little spatial variation, but large seasonal variation, with almost two times larger values in April than in September. The higher rate in April is ascribed to higher oxygen concentration in the seawater and higher organic carbon content in the surface sediments, which probably accelerate oxygen consumption for organic matter decomposition in the sediments. Aerobic remineralization rates estimated from the oxygen consumption rates ranged from 4.14 to 8.07 mmol C $m^{-2}d^{-1}$ in Ganghwa intertidal flat, which were much lower than the anaerobic remineralization rate.

A floristic study of Donggeom-do (Isl.), Ganghwa-gun, Korea

  • Kim, Sun-Yu;Lee, Byoung Yoon;Kim, Jung-Hyun
    • Journal of Species Research
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    • 제2권2호
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    • pp.203-222
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    • 2013
  • The district of Ganghwa-gun in the western coast (Seohae) of the Korea is consisted of several islands, Ganghwa-do, Seokmo-do, Gyodong-do, Jumun-do, Boreum-do, Seogeom-do and Donggeom-do. Since several islands of them were connected to mainland of Korea by bridges, the islands attract a lot of tourists from Seoul, Incheon and Gyeonggi-do areas. Construction of new roads, pensions, resort areas and restaurants provided economical benefits to local residents while natural vegetation of these islands has deteriorated continuously. Before biodiversity of vascular plants in these regions is damaged seriously by human impacts, it is needed to conserve original vegetation of the islands for restoration and monitoring in the future. Therefore, the primary purpose of the study is to clarify the flora of Donggeom-do, belonging to Ganghwa-gun. From the 15 times of field trips to the island, we have collected a number of vascular plants, 512 taxa in total, including 110 families, 329 genera, 449 species, six subspecies, 52 varieties, four forms and one hybrid. Of 512 taxa investigated, we have identified 12 taxa to be endemic to Korea. Six taxa were endangered or rare species which were designated by the Ministry of Environment and Korea Forest Service, respectively. 25 taxa were recognized as floristic regional indicator species designated specially by the Ministry of Environment. Seven species have shown their northern or southern distributional limit ranges, and 29 taxa were recognized as halophytes. The naturalized plants were identified as 55 taxa, and their naturalization ratio was 10.7%.

Seroprevalence of Plasmodium vivax Circumsporozoite Protein Antibody in High-Risk Malaria Areas in Korea

  • Lee, Jinyoung;Jin, Kyoung;Ahn, Seong Kyu;Lee, Sung-Keun;Kwon, Hyung Wook;Na, Byoung-Kuk;Kim, Tong-Soo
    • Parasites, Hosts and Diseases
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    • 제59권4호
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    • pp.415-419
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    • 2021
  • The circumsporozoite protein (CSP) of Plasmodium spp. is a diagnostic antigen and useful biomarker for monitoring short-term/seasonal changes to malaria transmission. Using P. vivax CSP antibody ELISA, epidemiological characteristics were analyzed in the residents of Ganghwa, Cheorwon, Paju, and Goseong from 2017 to 2018. In Ganghwa and Cheorwon, 1.6% and 1.2% of residents, respectively, were PvCSP-antibody-positive in 2018, which indicates a decrease of 0.4% in the positive rate compared to 2017. The annual parasite incidence (API) in Ganghwa and Cheorwon was 24.9 and 10.5 in 2017 and 20.3 and 10.7 in 2018, respectively. Although the changes were not significant, the API in Ganghwa decreased slightly by 4.5 in 2018 compared to the previous year. In Paju and Goseong, 3.9% and 2.0% of residents were positive for the PvCSP antibody. The API in Paju was 13.1 in 2017 and 16.0 in 2018, although no malaria patients were reported for the 2 years. Therefore, the results suggest that PvCSP is a useful antigen for confirming initial malaria infection. Additionally, considering that the antibody is relatively transient, it can be employed for sero-epidemiological studies to determine the extent of malaria transmission in the current year.

Clusters of Toxoplasmosis in Gyodong-Myeon and Samsan-Myeon, Ganghwa-Gun, Korea

  • Kim, Woojin;Chang, Yoon Kyung;Kim, Tong-Soo;Hong, Sung-Jong;Ahn, Hye-Jin;Nam, Ho-Woo;Kim, Dongjae
    • Parasites, Hosts and Diseases
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    • 제58권5호
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    • pp.493-497
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    • 2020
  • The purpose of this study is to find out the clusters with high toxoplasmosis risk to discuss the geographical pattern in 2 islands of Gyodong-myeon and Samsan-myeon in Ganghwa-gun, Korea. Seroepidemiological data of toxoplasmosis surveyed using rapid diagnostic tests for the residents in 2 islands from 2010 to 2013 were analyzed to detect clusters of the infection. The cluster was investigated using the SatScan program which is based on Kulldorff's scan statistic. The clusters were found with P-values in each region analyzed in the program, and the risk and patient incidence of specific areas can be examined by the values such as relative risk and log likelyhood ratio. Jiseok-ri was found to be a cluster in Gyodong-myeon and Ha-ri was the cluster in Samsan-myeon. This findings can be used to monitor and prevent toxoplasmosis infections occurring in vulnerable areas.

강화군에서 시행한 말라리아 신속진단킷트의 유용성 평가 (Evaluation of the Malaria Rapid Diagnostic Kit in Ganghwa County)

  • 권수정;권오준;윤성태;임준;임정수
    • 농촌의학ㆍ지역보건
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    • 제31권2호
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    • pp.157-164
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    • 2006
  • 본 연구는 말라리아 고위험지역인 강화군 주민을 대상으로 신속진단킷트 시행으로 인한 진단소요일의 변화와 신속진단킷트 검사의 민감도와 특이도를 평가하고자 하였다. 이를 위하여 1998년 1월부터 2005년 12월까지 인천광역시 강화군에서 발열증상으로 말라리아가 의심되어 보건소, 보건지소, 진료소, 병의원 등 보건의료기관을 내원한 검사자 중 질병관리본부의 최종 검사결과 말라리아가 확진된 검사자 942명을 대상으로 최초 발열일부터 검사일까지의 기간으로 진단 소요일을 추정하였으며, 2004년 1월부터 2005년 12월까지 보건의료기관에서 신속진단킷트 검사와 혈액도말검사를 동시에 실시한 검사자 434명을 대상으로 질병관리본부의 최종 검사결과와 비교하여 진단소요일에 따른 민감도와 특이도를 측정하였다. 연구결과, 2003년 신속진단킷트 시행으로 인하여 진단소요일은 2002년 4.68일에서 2004년 3.14일과 2005년 3.31일로 감소한 것으로 나타났다. 또한 신속진단킷트의 민감도와 특이도는 98.2%와 98.5%인 것으로 나타나 혈액도말검사의 97.5%, 100%와 비교하여 큰 차이가 없었다. 이상의 결과를 종합할 때, 말라리아 신속진단킷트 검사는 진단소요일을 단축하면서도 민감도와 특이도를 유지하는 장점이 있는 것으로 판단되었다. 말초혈액도말검사를 실시할 역량을 갖추지 못한 보건의료기관에서는 신속하고 정확한 말라리아 진단을 위하여 신속진단킷트 검사를 적극적으로 고려할 필요가 있다.

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교통카드 데이터를 이용한 대중교통 통행패턴 분석 : 강화군을 중심으로 (Analysis of the Transit Ridership Pattern using Transportation Card Data : focusing on Ganghwa)

  • 이민우;한종학;이향숙
    • 한국ITS학회 논문지
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    • 제17권2호
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    • pp.58-72
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    • 2018
  • 강화군은 제4차 국토종합계획에 의해 기존의 농촌이미지에서 탈피하여 새로운 발전의 계기를 맞이하게 되었다. 그러나 체계적인 대중교통 운영이 사실상 제대로 이루어지지 않아 이를 개선하기 위한 방안 제시가 시급한 실정이다. 본 연구에서는 강화군의 일주일간 승객 교통카드 분석을 통해 강화군의 대중교통 이용 패턴을 분석하였다. 그 결과, 강화군은 평일기준 약 7천1백 명의 승객이 대중교통을 이용하며, 특히 금요일에 가장 높은 이용률을 보였다. 시간대별로는 오전 7~8시에 뚜렷한 오전 첨두가 형성이 되었고, 주로 학생들이 하교하는 16~17시에 오후 첨두가 나타나는 특징이 나타났다. 강화군의 사회경제지표를 이용하여 회귀분석을 수행한 결과, 도서지역의 특성상 의료시설이나 인구, 학교용지 면적과 같이 주거단지나 상업단지가 밀집된 지역에서 많은 승하차가 발생하는 것을 확인할 수 있었다. 본 연구의 결과는 강화군의 버스이용 패턴을 파악하여 향후 체계적인 대중교통네트워크를 구축하기 위한 기초자료로 활용될 수 있을 것이다.

도보여행 활성화를 위한 탐방로 시설 및 운영 관리 실태 평가 - 강화 나들길을 중심으로 - (Evaluation of Trail Facility and Operation-Management for Walking Tour Revitalization - focus on Ganghwa Nadeul-gil -)

  • 신선미;변병설
    • 한국습지학회지
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    • 제17권2호
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    • pp.176-183
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    • 2015
  • 본 연구는 도보여행 탐방로의 평가 기준을 도출하고, 탐방로 시설과 운영관리 실태를 평가하는데 목적이 있다. 도보여행 연구를 바탕으로 탐방로 시설과 운영관리에 대한 평가 지표를 도출하였고, 탐방자원, 탐방시설, 탐방로 운영관리로 구분하였다. 강화 나들길의 이용 만족도가 높은 코스를 선정하였고 자연중심형과 문화중심형 탐방로로 분류하여 강화 나들길의 탐방로 실태를 평가하였다. 자연중심형 탐방로는 탐방로와 연계된 마을의 생활문화자원을 발굴해야 하고, 버스정류장, 슈퍼마켓을 이용하여 편의시설을 조성해야 한다. 문화중심형 탐방로는 쇠퇴시설을 활용한 경제적 재생 방안을 마련해야 한다.

강화 남부 조간대에 서식하는 칠면초(Suaeda japonica)의 연간 생장 및 생산 양상 (Growth Rate and Annual Production of Halo-phyte (Suaeda japonica) on Tidal Mud-flat, Southern Part of Ganghwa-Isl, Korea)

  • 황지원;이균우;박흥식
    • Ocean and Polar Research
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    • 제44권2호
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    • pp.127-137
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    • 2022
  • This study examined the growth pattern and environmental factors affecting the growth of the halophyte, Suaeda japonica, which is prevalent on tidal flats in the west coast of Korea in order to calculate annual carbon production. Quantitative sampling was conducted every month for three years from 2018 to 2020 on salt marshes located on the southern coast of Ganghwa Island. In terms of annual density affected by the germination rate at first period, especially when air temperature for winter time was constantly below 0℃ for long periods of time, germination decreased and precipitation in summer also exerted an influence. In terms of annual growth with regard to length, the part below the ground grew rapidly in the beginning after budding, while the part above ground grew at a relatively steady rate at all times. With regard to biomass, the part below the ground also increased from April in a manner similar to length growth, but decreased drastically from September with leaves falling off and water loss occurring. The part above ground showed a rapid increase from the beginning of the rainy season. Size-frequency distribution revealed broader patterns after the rainy season as individual growth varied, but from September, it stopped at all year. High growth rates were recorded in the initial phase of growth after budding and growth was rapid, but growth declined in summer when biomass increased. The annual mean production based on growth rate was calculated at 352 gDWt/m2/yr, and the highest production was 519 gDWt/m2/yr in 2018, but it has decreased since 2019. Annual carbon production was at calculated 143.41 gC/m2/yr for Suaeda japonica in the vicinity of the southern coast of Ganghwa Island.