• 제목/요약/키워드: Coniferous species

검색결과 219건 처리시간 0.022초

인공산성우에 대한 조경수목의 내성 비교 (A Study on Resistant Comparisons of Landscape Trees by Simulated Acid Rain)

  • 정용문
    • 한국대기환경학회지
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    • 제7권3호
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    • pp.208-218
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    • 1991
  • To compare the resistance of landscape trees by acid rain, simulated acid rain was treated on the seeds of 6 coniferous species (Pinus densiflora, Pinus thunbergii, Pinus koraiensis, Taxus cuspidata, Cedrus deodara, Thuja occidentalis) and 6 broad-leafed species (Ligustrum obtusifolium, Acer Buergerianum, Acer Ginnala, Styrax obassia, Cornus Kousa, Magnolia obovata). The experimental design of randomized block arrangement with three replications was implemented in the experimental field of Yesan National Agri-Tech Junior College. The seeds of 12 tree species were planted on the nursery soil in the early spring of 1991. The regime of artificial acid rain, in terms of spray frequency per monthly and spray amount at year records. Simulated acid rain (pH 2.0, pH 4.0, pH 5.6 as control) containing sulfuric and nitric acid in the ratio of 3:2 (chemical equivalant basis) diluted ground water, were treated on the experimental plants under condition of cutting off the natural precipitation with vinyl tunnel, during the growing season (April 8 to August 31) in 1991. Seedling establishment, seedling growth and nutrient contents in needles and leaves were measured and compared among the treatment. The results were summerized as follows; 1. In general, coniferous species were more resistant than broad-leafed species in the resistant comparisons of landscape trees by simulated acid rain. But there were resistant tree species to acid rain among the broad-leafed species. 2. Among 6 coniferous species used in this experiment, Pinus densiflora, Pinus koraiensis, Taxus cuspidata, Cedrus deodara and Pinus thunbergii revealed the resistant tree species to acid rain. But Thuja occidentalis was very susceptible to acid rain, because of no germination in pH 2.0 treatment plot of acid rain. 3. Among 6 broad-leafed species used in this study, Magnolia obovata, Styrax obassia and Ligustrum obtusifolium showed relative resistant tree species to acid rain. But Acer Buergerianum, Acer Ginnala and Cornus Kousa were very susceptible to acid rain, because of no germination in pH 2.0 plot of acid rain treatment.

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광릉지역의 날개응애(Acari : Oribatida) 목록 : 44임반(활엽수림)과 45임반(침엽수림)을 중심으로 (Faunal List of Oribatid Mites ( Acari : Oribatida) at the 44th (deciduous) and 45th (coniferous) compartment in Kwangreung, Korea)

  • 박홍현;정철의;이준호;최성식;이범영
    • 한국토양동물학회지
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    • 제1권2호
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    • pp.95-101
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    • 1996
  • A total of 101 species belonging to 76 genera under 42 families in Kwangreung coniferous forest (45th compartment) and 108 species belonging to 69 genera under 40 families in Kwangreung deciduous forest (44th compartment) was reported, respectively.

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Diversity and Distribution of Wood Decay Fungi in Korea

  • Kim, Nam Kyu;Kim, Dae Ho;Han, Sang Kuk;Cha, Du Song;Lee, Jong Kyu
    • Journal of Forest and Environmental Science
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    • 제34권2호
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    • pp.126-135
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    • 2018
  • Wood decay fungi were collected in 47 different locations in eight provinces of South Korea from 2011 to 2013. One thousand and five hundreds three fruiting bodies of wood-decay fungi were collected, identified, and classified into 2 phyla, 7 classes, 19 orders, 56 families, 159 genera and 365 species. The most dominant genus and species found were Trametes and T. versicolor. The highest species diversity was found in broad-leaved forest (273 species), and was also found at elevations of 500-1,000 m (227 species). A total of 333 species were collected from broad-leaved trees, 87 species from coniferous trees, and 55 species were collected from both forest types. Gymnopilus liquiritiae was the most dominant species in coniferous trees, while T. versicolor, which was mostly collected from tree trunks below 500 m in elevation, was dominant in broad-leaved trees. Results from the quantitative cluster analysis of wood decay fungi showed that the highest species diversity index was 1.80 in the mixed forests, while the highest similarity among forest types was shown between the broad-leaved and mixed forests.

仁川 近海 島嶼地域의 海岸植物 群落에 따른 細胞性 粘菌의 出現과 分布 (Occurrence and Distribution of Cellular Slime Molds in Relation to the Coastal Plant Communities of Islands near Inch`on)

  • Hong, Jeong-Soo;Nam-Kee Chang
    • The Korean Journal of Ecology
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    • 제14권4호
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    • pp.457-467
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    • 1991
  • Occurrence and distribution of the celluar slime molds in relation to the coastal plant communities of svven islands near inch'on wereinvestigated. as a results, total seven species were isolated from the soils of the coastal plant communities. These are dictyostelium mucoroides, polysphodylium pallidum, dictystelium polycephalum. d. mucoroides was the most commonly found in the coastal plant communities investigated, and was dominant pecularly in the coastal mixed forests, the coastal broad-leaved forests and salt marshes. In the coastal coniferous forest and the coastal dune sand plants, hoeever, p. violaceum was the dominant species. species diversity was relatively was relatively high in the coastal coniferous ferests and the coastal mixed forests. However, agerage number of species isolated from all plant communities was very low,2.8.

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Molecular Identification of Endophytic Fungi Isolated from Needle Leaves of Conifers in Bohyeon Mountain, Korea

  • Yoo, Jae-Joon;Eom, Ahn-Heum
    • Mycobiology
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    • 제40권4호
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    • pp.231-235
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    • 2012
  • Fungal endophytes are microfungi that live in plants without causing apparent symptoms of infection. This study was conducted to identify endophytic fungi isolated from leaves of coniferous trees in Bohyeon Mountain of Korea. We collected leaves of two species of coniferous trees, Pinus densiflora and Pinus koraiensis, from 11 sites in the study area. A total 58 isolates were obtained and identified using molecular and morphological characteristics. Four species of endophytic fungi were isolated from P. densiflora: Lophodermium conigenum, Leotiomycetes sp., Septoria pini-thunbergii, and Polyporales sp., while two fungal species were isolated from P. koraiensis: Eurotiomycetes sp. and Rhytismataceae sp. The most frequently isolated species were L. conigenum and S. pini-thunbergii.

Small-Scale Dynamics of Moths in Spring from a Coniferous Forest of Southwestern Korea

  • Choi, Sei-Woong;An, Jeong-Seop
    • Journal of Ecology and Environment
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    • 제31권1호
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    • pp.83-87
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    • 2008
  • The small-scale dynamic of moth populations in spring was examined in a coniferous forest of southwestern Korea. Moths were collected with one 22-watt light trap for 29 days in April 2007. A total of 450 individuals of 38 species in 5 families were collected. The most abundant species was an epiplemid moth, Epiplema plagifera. The relationship between these dominant moths and their host plants is briefly discussed. We also examined influence of weather factors on the number of species and individuals collected. Multiple regression analyses showed that the two-day temperature difference explained 18% of the variance in the number of species collected, while air and ground temperatures explained 51% of the variance in the log-transformed number of individuals collected. This suggests that temperature affects local population sizes in spring, but variables other than weather may also affect the diversity of local moth populations.

광릉의 송백림에 있어서 종다양성, 현존량 및 토양양분에 관한 연구 (Studies of Species Composition and Standing Crop and Soil Nutrients in Conifer of Kwangnung Forests)

  • 신창남;장남기
    • 아시안잔디학회지
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    • 제9권4호
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    • pp.317-329
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    • 1995
  • The study of standing crop of the ground vegetation under the coniferous stands was pursuited in regard of soil nutrients at Kwangnung plantation from May to Octoher, 1971 and 1991. The coniferous stands implied pine and larch associations of which the young stands of each as-sociation were 9~12 years and the older one 40~70 years. The larch stands were more plentiful in species than in the pine stands and the Festuca ovina and Oplismenus burmannii each were dominant species of pine and larch stands. The standing crop of pine stands is from 98.02g /$m^2$ to 385.32g /$m^2$ The standing crops of those stands showed great increase from June to August when the air temperature and rainfall were fairly high. The standing crop has correlation to total nitrogen and organic matter in the soil.

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국가산림자원조사를 이용한 주요수종별 직경생장량 분석 - 강원도 산림을 대상으로 - (Diameter Growth Analysis for Major Species using National Forest Resource Inventory - In the Gangwon-do Forests -)

  • 이원아;신주원;최정기;이우균;이영진;김성호;정동준
    • Journal of Forest and Environmental Science
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    • 제27권2호
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    • pp.113-118
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    • 2011
  • This study was carried out to analyze annual diameter growth characteristics for major 11 tree species using the data for Gangwon province of the National Forest Resources Inventory in 2007. The annual diameter growth of coniferous species was 5.02 mm, 4.70 mm, and 3.90 mm in Korean white pine, Japanese larch, and Korean red pine, respectively. In growths of the deciduous trees, dogwood, basswood, and cork oak had 3.55 mm, 3.48 mm and 3.01 mm, respectively. Average of the annual diameter growths for all species was 3.38 mm. The relationship between diameter growth and age class showed that the growth rate decreased for all species as age increased. The age class II had the highest annual diameter rate. In relation of the stand density(trees per hectare) and diameter growth, the diameter growth tended to decrease as the stand density increased for most species, especially Korean white pine, cork oak, and basswood. Finally age had the highest value in the correlation coefficients between measurement factor and growth rate regardless of species.

Diversity of Foliar Endophytic Fungi Inhabiting Coniferous Trees in Korea

  • Eo, Ju-Kyeong;Eom, Ahn-Heum
    • 한국균학회지
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    • 제46권3호
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    • pp.205-211
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    • 2018
  • Fungal endophytes are defined as fungi inhabiting plant tissues, causing no apparent disease. As the agricultural and ecological importance of endophytes has increased, many studies have been performed on various aspects, ranging from basic identification, taxonomy, and evolution to secondary metabolites with potential for human use. In the Korean Peninsula, conifers are the most commonly found evergreen trees, with approximately 30 to 60 reported taxa. Studies on the effect of conifer-associated endophytes on the host plants are required for the preservation and conservation of coniferous forests which decline by climate change and deforestation. This review summarizes the diversity of endophytic fungi in coniferous trees of Korea and their relationship with host plants.