• 제목/요약/키워드: forest ecology

검색결과 2,185건 처리시간 0.022초

Current trends in forest science research using microsatellite markers in Korean national journals

  • Lee, Byeong-Ju;Eo, Soo Hyung
    • 농업과학연구
    • /
    • 제43권2호
    • /
    • pp.221-231
    • /
    • 2016
  • Microsatellites, which are sequences of repetitive short nucleotides, are abundant in the genome and have relatively many alleles at a locus. Hence, microsatellite markers are used in various research areas such as medicine, agriculture, and biology. Thanks to recent advanced techniques and databases associated with microsatellite marker development, foreign research relying on microsatellite markers is increasing in various study areas. In this study, by analyzing microsatellites-related articles published during 2000-2014 from eight Korean national journals representing zoology, botany, genetics, ecology and environmental science, breeding science, and forest science ('Animal Cells and Systems', 'Journal of Plant Biology', 'Genes and Genomics', 'Korean Society of Environment and Ecology', 'Korean Journal of Breeding Science', 'Journal of Agricultural Science, Chungnam National University', 'Journal of Korean Forest Society' and 'Forest Science and Technology'), we found that the number of articles and diversity of study subjects and objects have increased considerably. However, there are fewer applications of microsatellites in the national forest science area. During 2000-2014 in 'Journal of Korean Forest Society', the percentage of articles dealing with microsatellite markers was found to be the lowest with 4.2% among articles focusing on PCR-based markers including RAPD, AFLP, and ISSR. However, in 'Canadian Journal of Forest Research' and 'Forest Ecology and Management', microsatellite marker articles were represented at their highest with 69.2% and 76.2%, respectively. Given the advantages of microsatellite markers, the publication of research papers using microsatellites should be increased in Korean forest science journals to the level of studies published in prominent international journals.

Can we estimate forest gross primary production from leaf lifespan? A test in a young Fagus crenata forest

  • Koyama, Kohei;Kikuzawa, Kihachiro
    • Journal of Ecology and Environment
    • /
    • 제33권3호
    • /
    • pp.253-260
    • /
    • 2010
  • It has been well established that leaf longevity is linked to the carbon economy of plants. We used this relationship to predict leaf lifetime carbon gains from leaf lifespan, and estimated the gross primary production (GPP) of a young deciduous forest of Japanese beech (Fagus crenata) located in central Japan. The light-saturated photosynthetic rates of the leaves were measured repeatedly during the growing season. We used the leaf lifespan to calculate the conversion coefficient from the light-saturated photosynthetic rate into the realized leaf lifetime carbon gain under field conditions. The leaf turnover rate was estimated using litter traps. GPP was estimated as the product of lifetime carbon gain per unit of leaf mass, and the annual leaf turnover rate. The GPP of the forest in 2007 was estimated to be $1.2{\times}10^3gCm^{-2}y^{-1}$, which was within the range of previously reported GPP values of beech forests in Japan, and was close to the GPP of a European beech forest, as estimated by eddy flux measurements.

Study on Crossing Tendencies of Birds by Road Type for Validation of Wildlife Crossing Structures Targeting Avian Species

  • Song, Eui-Geun;Lee, Hwa-Su;Park, Hee-Bok;Woo, Dong-Gul;Park, Tae-Jin;Chun, Su-Won;Sim, Seung-Woo;Cha, Hyoun-Gi;Lim, Anya;Choi, Tae-Young
    • Journal of Forest and Environmental Science
    • /
    • 제34권2호
    • /
    • pp.136-141
    • /
    • 2018
  • The purpose of this study is to compare the bird crossing of roads by type (Expressway 1, railroad-provincial road and Highway 4) and the crossing of roads according to the size of birds. The greatest number of avian species and individuals crossing road per 10 minutes were found on railroad-provincial road ($8.96{\pm}1.92$ and $29.33{\pm}11.94$, respectively), while the lowest number of avian species and individuals were found on Expressway 1 ($2.96{\pm}1.04$ and $6.13{\pm}2.89$, respectively), which has the widest width. In addition, the number of small-sized bird (<20 cm) crossing the Expressway 1, railroad-provincial road, and Highway 4 was lower than that of the medium-sized bird (${\geq}20cm$). Current wildlife crossing structures have been focused on mammals, amphibians and reptiles, but future structures should also consider birds.

국내 7대 광역시 산림 연결성 비교 분석 (Comparing Connectivity in Forest Networks of Seven Metropolitan Cities of South Korea)

  • 강완모;김지원;박찬열;성주한
    • 한국농림기상학회지
    • /
    • 제16권2호
    • /
    • pp.93-102
    • /
    • 2014
  • 본 연구에서는 그래프 이론을 적용하여 7대 광역시의 산림 연결성을 정량적으로 분석하였다. 다중공간규모의 전파 거리(100m~20km)에서 광역시별 산림 연결망의 전체 연결성을 평가하고, 소규모 산림(<10ha)이 연결성에 기여하는 정도를 측정하였다. 연구결과, 대구와 대전, 울산은 연결성이 높은 상위지역으로, 광주와 부산, 서울, 인천은 연결성이 낮은 하위지역으로 크게 양분화 되는 경향을 나타냈다. 소규모 산림들은 면적이 큰 산림들을 연결시키는 징검다리로서 특히 하위지역의 연결성을 크게 향상시키는 역할을 하였다. 생물 다양성에 중요한 연결성 보전을 위해서 상위지역에서는 잘 연결된 대규모 산림지역을 주요 거점으로 보전해야 한다. 하위지역에서는 우선적으로 연결성 유지에 중요한 소규모 산림들의 보전이 필요하다. 또한 연결성이 취약한 곳에 새로운 산림녹지를 조성해주는 전략이 요구된다.

향버섯 발생지의 식생구조 및 주요 특성 (Vegetation Structure and Main Characteristics in Habitat of Sarcodon impricatus)

  • 이미지;구남인;가강현;김민수
    • 한국환경생태학회지
    • /
    • 제38권2호
    • /
    • pp.156-168
    • /
    • 2024
  • 본 연구는 향버섯이 발생하는 임지를 대상으로 식생구조와 토양 특성을 구명하여 임지 및 환경의 필수적인 기초자료를 제공하고자 수행하였다. 연구대상지는 신갈나무가 우점하고 있는 신갈나무군락과 굴참나무, 신갈나무, 소나무 등이 혼재하고 있는 혼효림 형태인 굴참나무군락으로 구분되었다. 또한 전자의 군락에는 실새풀, 후자의 군락에는 애기나리와 대사초가 지표종으로써 유의한 수준으로 나타났다. 두 군락 모두 유효인산과 pH, 모래, 점토가 강한 상관성을 나타내었으며, 토양의 높은 유기물 함량과 약산성 pH는 향버섯 발생에 관련된 것으로 판단된다. 하위 층위에 나타나는 종들은 상위 층위에 출현한 종들이 실현 지위를 확보하고 있기 때문에 지속적으로 우점하는 것으로 나타났다. 해당 입지는 북-동의 방위로 비교적 습윤한 입지에 분포하였고, 낙엽층 깊이가 얇고 암석노출도가 낮아 토양이 발달한 것으로 보였다. 선정된 향버섯 발생지들은 교란 또는 외부 간섭으로부터 적응성이 높은 종을 중심으로 식생이 발달하고 있었다. 이와 같은 사실을 통해 향버섯이 발생할 수 있는 임분을 간접적으로 파악할 수 있으며, 인공재배 시 향버섯 발생 촉진을 위한 기초자료로 활용될 수 있을 것으로 기대된다.