• 제목/요약/키워드: Jeju islands

검색결과 100건 처리시간 0.025초

제주도 범섬의 식물상 (The Flora of Beomseom Island, Jeju-do)

  • 김찬수;송관필;문명옥;송국만;김진;이은주
    • 한국자원식물학회지
    • /
    • 제18권2호
    • /
    • pp.285-301
    • /
    • 2005
  • 본 조사는 식물상을 밝힘으로서 체계적이고 효율적인 보존관리대책을 마련하데 필요한 정보를 제공하고 우리나라 최남단에 속하는 도서에 있어서 식물자원의 분포특성을 파악하고자 수행하였다. 관속식물은 65과 140속 162종 2변종으로 총 164분류군이었는데 그 중 양치식물은 6과 13속 15종, 나자식물은 1과 1속 1종, 피자식물에 있어서는 쌍자엽식물이 49과 97속 114종 1변종으로 115분류군, 단자엽식물은 10과 29속 32종 1변종으로 33분류군이 출현하여 계 59과 126속 146종 2변종으로 계 148종이었다. 미기록 종은 양치식물 중 점고사리, 쇠고비, 큰족제비고사리, 사다리고사리 등 4종, 단자엽식물 중 강아지풀, 줄, 송이고랭이, 꽃토란, 개구리밥, 부채마 등 6종, 쌍자엽식물 중 큰사방오리, 개모시풀, 애기싱아, 미국자리공, 갯장구채, 새머루, 누리장나무, 보리장나무. 진득찰 등 9종 총 16과 19속 19종이었다. 희귀식물로서는 국내 거문도와 제주도에만 분포하는 것으로 알려진 박달목서가 자생하고 있으며, 바위연꽃의 자생지도 확인되었다. 또한 귀화식물은 총 20과 33속 34종 1변종으로 총 35분류군이었다.

생일도의 생물상에 관한 연구 (A Study on the Vegetation of the Saeng-il Island)

  • Ho Joon Lee
    • The Korean Journal of Ecology
    • /
    • 제4권3_4호
    • /
    • pp.80-92
    • /
    • 1981
  • 1979년 7월부터 1981년 5월까지 4회에 걸쳐 생일도의 식생을 조사한 결과는 다음과 같다. 본도의 식물을 총 89과, 203속, 211종, 28변종, 3품종이었으며 상록활엽수는 동백나무, 구실잣밤나무를 비롯해서 총 24종이었다. 본도의 동북사면보다는 남서사면의 식생이 양호하였으며 그외의 지역은 식물상이 빈약하였고 유촌리에서 금머리사이의 지역은 칡과 누리장나무가 우점종이었다. 굴전리, 용출리, 금머리지역에 동백나무, 참식나무, 구실잣밤나무를 비롯한 상록활엽수가 우점종이었던 것이 인위적인 간섭(신탄용, 건축용, 방목등)에 의해 현재와 같은 곰솔을 우점종으로 하는 인위적인 천이가 일어난 것이다. 금머리 후사면의 동백나무군락과 굴전리와 항도 동사이의 구실잣밤나무군락은 보존할 가치가 있다고 생각하며 제주도와 돌산도에 분포하고 있는 호자나무(Damnacanthus indicus)가 본도에서도 발견된 것은 특기할만 하다.

  • PDF

제3차전국자연환경조사의 조류자료를 활용한 생물다양성 우수지역 분포 연구 (Distribution Patterns of Biodiversity Hotspot using Birds Data from the 3rd National Ecosystem Survey in South Korea)

  • 권혁수;이윤경;유승화;김동원;김장수
    • 한국환경복원기술학회지
    • /
    • 제23권3호
    • /
    • pp.81-89
    • /
    • 2020
  • The grid-based analysis is useful for conservation planning, species distribution study, education, and others'. On the west coast of Korea, it was high in species richness, rarity and endangered species richness. Our results also showed that coordinated species data can be applied to develop species distribution models due to the high correlation between total species richness and coordinated species 0richness. In hot spot analysis, high species richness areas are concentrated around the west coast, while species richness is relatively low in Gangwon and Gyeongnam. Endangered species and rarity were also concentrated on the west coast and islands. Through the complementary analysis, we selected areas which are efficient to protect species; protecting more species while minimizing the conservation effort. Our result demonstrated that simply protecting Baengyueong island, Gageo island and a part of Jeju island can conserve over 50% of bird species in South Korea. However, the validity of our analysis was limited by the absence of data from national parks, and Baekdudaegan protected areas as well as inconsistent capacity among field researchers.

Factors Affecting the Wintering Habitat of Major Fishery Resources in Southwestern Korean Waters

  • Kim, Jin-Yeong;Choi, Il-Su;Kim, Joo-Il;Choi, Seok-Gwan;Chun, Young-Yull
    • Ocean Science Journal
    • /
    • 제42권1호
    • /
    • pp.41-48
    • /
    • 2007
  • We investigated the temperature and salinity effects on the major fish species in the wintering grounds based on trawl surveys and oceanographic observations in the southwestern waters of Korea during March-early April in 2002-2003. The influence area of warm Kuroshio water was limited to the southwestern area of Korea in 2003 with a range of $7.7-16.3^{\circ}C$, 32.54-34.70 of salinity, wider than that of 2002. The number of fish species and density of major fish species in 2003 were higher than in 2002. Geographical estimation showed high proportions of species number and catches in the areas around Jeju Islands, southwestern waters and the southeastern coast of Korea. Five species; silver pomfret (Pam pus echinogaster), hairtail (Trichiurus lepturus), anchovy (Engraulis japonicus), Small yellow croaker (Larimichthys polyactis) and yellow goosefish (Lophius litulon) were most abundant, composing above 60% of the total catch in 2002 and 2003. More than 50% of catch in the major fish species were mostly distributed in the range of $9.5-11.0^{\circ}C$ of temperature and 33.1-33.9 of salinity. Non-parametric estimation for the major species showed the 1st mode around $10^{\circ}C$ and the 2nd mode at $8-9^{\circ}C$ in 2002 and $11-14^{\circ}C$ in 2003. Among major fish species, hairtail was principally composed of juveniles, and larger individuals were caught in southeastern waters. These results are considered to be helpful for the area-based fishery management strategy for the wintering grounds of the Yellow Sea and coastal waters of Korea.

한반도 바람자원의 시공간적 분포 (Spatial and temporal distribution of Wind Resources over Korea)

  • 김도우;변희룡
    • 대기
    • /
    • 제18권3호
    • /
    • pp.171-182
    • /
    • 2008
  • In this study, we analyzed the spatial and temporal distribution of wind resources over Korea based on hourly observational data recorded over a period of 5 years from 457 stations belonging to Korea Meteorological Administration (KMA). The surface and 850 hPa wind data obtained from the Korea Local Analysis and Prediction System (KLAPS) and the Regional Data Assimilation and Prediction System (RDAPS) over a period of 1 year are used as supplementary data sources. Wind speed is generally high over seashores, mountains, and islands. In 62 (13.5%) stations, mean wind speeds for 5 years are greater than $3ms^{-1}$. The effects of seasonal wind, land-sea breeze, and mountain-valley winds on wind resources over Korea are evaluated as follows: First, wind is weak during summer, particularly over the Sobaek Mountains. However, over the coastal region of the Gyeongnam-province, strong southwesterly winds are observed during summer owing to monsoon currents. Second, the wind speed decreases during night-time, particularly over the west coast, where the direction of the land breeze is opposite to that of the large-scale westerlies. Third, winds are not always strong over seashores and highly elevated areas. The wind speed is weaker over the seashore of the Gyeonggi-province than over the other seashores. High wind speed has been observed only at 5 stations out of the 22 high-altitude stations. Detailed information on the wind resources conditions at the 21 stations (15 inland stations and 6 island stations) with high wind speed in Korea, such as the mean wind speed, frequency of wind speed available (WSA) for electricity generation, shape and scale parameters of Weibull distribution, constancy of wind direction, and wind power density (WPD), have also been provided. Among total stations in Korea, the best possible wind resources for electricity generation are available at Gosan in Jeju Island (mean wind speed: $7.77ms^{-1}$, WSA: 92.6%, WPD: $683.9Wm^{-2}$) and at Mt. Gudeok in Busan (mean wind speed: $5.66ms^{-1}$, WSA: 91.0%, WPD: $215.7Wm^{-2}$).

거문도를 중심으로 하는 세일링요트 안전항로 개발에 관한 연구 - 전남 여수 거문도와 제주특별자치도 김녕항 루트를 중심으로 - (A Study on the Development of the Safe Navigation Route for a Sailing Yacht Focused on Geomundo (Port Hamilton))

  • 김인철;오현준;김동원
    • 해양환경안전학회지
    • /
    • 제22권2호
    • /
    • pp.174-180
    • /
    • 2016
  • 본 연구는 여수에서 출항하여 백도와 도서문화가 살아있는 거문도를 거쳐 제주 김녕항으로 이어지는 해양관광 크루즈 세일링 요트 항로를 제안하였다. 최근 해양레저 활성화에 비례하여 안전사고도 늘어나고 있으며, 세일링 요트의 특성을 고려한 안전항로 개척은 지역별, 해역별로 조사되어야 한다. 따라서 거문도의 사례를 통해 분석해 보면 해양문화의 소개, 국제요트대회유치, 다기능항으로 개발 등이 필요하고, 특히 해당 항로의 운항패턴과 밀집도 분석 등이 추가로 도출되어야 할 것이다. 이러한 정보는 세일링 요트의 운항 안전율을 높여 지역 관광산업에 도움이 될 것이다.

한국산 놀래기과 어류의 분류학적 검토 (Taxonomical Review of the Korean Labroidei (Teleostei: Perciformes))

  • 김병직
    • 한국어류학회지
    • /
    • 제21권sup1호
    • /
    • pp.74-74
    • /
    • 2009
  • The perciform suborder Labroidei comprising six families (Cichlidae, Embiotocidae, Pomacentridae, Labridae, Odacidae, and Scaridae) are characterized by having the specialized pharyngeal jaws for food processing, i.e., united fifth ceratobranchials and upper pharyngeal jaw articulating with the basicranium via diarthroses (Stiassny and Jensen, 1987). They usually inhabit in the most tropical and subtropical seas and comprise about 235 genera and roughly 2,274 species worldwide (Nelson, 2006). Concerning the Korean labroid fishes, Mori (1952) had listed 18 genera and 26 species belong to four families in his check list of Korean fishes since Jordan and Metz (1913) firstly reported six genera and seven species in only two families (Embiotocidae and Labridae). Chyung (1977) added two species, Tilapia mossambica and Cirrhilabrus temmincki, to Mori’s list and also classified them into three suborders, i.e., Embiotocina (containing only Embiotocidae), Pomacentrina (Cichlidae and Pomacentridae), and Labrina (Labridae and Scaridae). Subsequently, Lee and Kim (1996) reviewed the Korean labroidfishes taxonomically resulting in 22 genera and 32 species in five families with some taxonomical modifications including a new Korean record. It is remarkable to be added many new Korean recordsto the pomacentrids or the labrids for recent 10 years (Koh et al., 1995; Yoo et al., 1995; Koh et al., 1997; Myoung, 1997; Choi and Kim, 2000; Choi et al., 2002; Kim and Go, 2003). Recently, Kim et al. (2005) briefly described all members of the Korean Labroidei with a color photograph or a figure, recognizing 27 genera and 42 species in five families. In the present study, the current taxonomical status of the Korean labroid fishes including distributional features is summarized based both on specimens collected from the Korean waters and on literature survey to provide bio-information of the Korean native fish species. As a result, the Korean labroid fishes totally consist of 27 genera and 44 species in five families, that is, Cichlidae (1 species), Embiotocidae (3), Pomacentridae (15), Labridae (22), and Scaridae (2). They distributed mainly in the coastal waters of the South Sea, Korea, however, most pomacentrids or labrids occur in the coastal waters of Jeju Island only, although some species were observed in their larval or juvenile stages only from coastal waters of the island. Interestingly, several species are expanding their distribution north to Ulreung and Dok islands in the East Sea, Korea lately.

Monitoring of Climate Change of Northeast Asia and Background Atmosphere in Korea

  • Oh, Sung-Nam;Chung, Hyo-Sang;Choi, Jae-Cheon;Bang, So-Young;Hyun, Myung-Suk
    • 한국환경과학회:학술대회논문집
    • /
    • 한국환경과학회 2003년도 International Symposium on Clean Environment
    • /
    • pp.232-235
    • /
    • 2003
  • In general, the parameters of climate change include aerosol chemical compounds, aerosol optical depth, greenhouse gases(carbon dioxide, CFCs, methane, nitrous oxide, tropospheric ozone), ozone distribution, precipitation acidity and chemical compounds, persistent organic pollutants and heavy metals, radioactivity, solar radiation including ultra-violet and standard meteorological parameters. Over the last ten years, the monitoring activities of Korea regarding to the climate change have been progressed within the WMO GAW and ACE-Asia IOP programs centered at the observation sites of Anmyeon and Jeju Gosan islands respectively. The Greenhouse gases were pointed out that standard air quality monitoring techniques are required to enhance data comparability and that data presentation formats need to be harmonized and easily understood. Especially, the impact of atmospheric aerosols on climate depends on their optical properties, which, in turn, are a function of aerosol size distribution and the spectral reflective indices. Aerosol optical depth and single scattering albedo in the visible are used as the two basic parameters in the atmospheric temperature variation studies. The former parameter is an indicator of the attenuation power of aerosols, while the latter represents the relative strength of scattering and absorption by aerosols. For aerosols with weak absorption, surface temperature decreases as the optical depth increases because of the domination of backscattering. For aerosols with strong absorption, however, warming could occur as the optical depth increases. The objective of the study is to characterize the means, variability, and trends of Greenhouse gases and aerosol properties on a regional basis using data from its baseline observatories in Korea peninsula. A further goal is to understand the factors that control radiative forcing of the greenhouse and aerosol.

  • PDF

상록활엽수 3종의 한반도분포 및 자생북한계지 (Distribution and Northernmost Limit on the Korean Peninsula of Three Evergreen Trees)

  • 이정현;최병희
    • 식물분류학회지
    • /
    • 제40권4호
    • /
    • pp.267-273
    • /
    • 2010
  • 본 연구는 표본과 현지조사를 토대로 대표적 난온대성 상록활엽수인 붉가시나무, 참식나무, 후박나무의 한반도 분포를 조사하고, 각 종의 분포도를 작성하였다. 조사결과 이 종들은 제주도, 울릉도, 남해안 및 서해의 인천 도서지방까지 분포하며, 이는 한반도 남해안아구계와 일치하였다. 붉가시나무의 서쪽 자생북한계지는 인천시 옹진군 덕적면 납도이었으며, 동쪽은 금번조사를 통해 울릉도에서 새로운 자생지가 확인되었다. 참식나무의 자생북한계지는 인천시 옹진군 덕적군도(각흘도, 광대도, 하고도)이었으며, 후박나무의 자생북한계지는 인천시 옹진군 대청도로, 3종중 가장 고위도 까지 분포하였다. 이들 상록활엽수 분포 조사결과는 한반도 식물구계 구분 및 기후변화 생물지표자료로 활용할 수 있을 것이다.

Bactrocera 속 과실파리 종합관리기술 (Integrated Pest Management Against Bactrocera Fruit Flies)

  • 김용균;김동순
    • 한국응용곤충학회지
    • /
    • 제55권4호
    • /
    • pp.359-376
    • /
    • 2016
  • 국제 무역량 증가와 기후변화에 따라 아열대성 해충이 온대지역으로 침입하는 사례가 늘고 있다. 과실파리과는 초파리과와 더불어 두 과실파리 분류군 가운 데 하나로 약 5,000 종 이상이 포함되어 있다. Anastrepha, Rhagoletis, Ceratitis 및 Bactrocera 속에 속한 일부 과실파리류가 높은 침입력으로 여러 온대 지역의 과실과 채소류에 막대한 피해를 일으키고 있다. 본 종설은 이들 과실파리류들의 침입과 정착을 억제하는 기술이 비교적 잘 개발되어 적용된 Bactrocera 속에 속한 해충류를 중심으로 고찰하였다. 이들 과실파리류에 대해 많은 방제 기술이 개발되었지만, 효율적인 종합해충관리 프로그램 개발이 아직 널리 정착되지 않고 있다. 이에 본 종설은 과실파리를 방제하는 여러 기술을 설명하고, 이 가운데 아열대 군도에서 실시된 종합해충관리의 성공사례를 소개한다. 아울러 국내에 큰 피해를 주는 주요 과실파리의 발생생태와 방제기술도 정리하였다.