• Proceedings of the Plant Resources Society of Korea Conference
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• 2018.10a
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• pp.47-47
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• 2018

붉가시나무는 기후변화에 따라 분포 확산이 예측되고 목재로서의 이용가치가 증가하고 있다. 본 연구는 국내에서 붉가시나무의 자원량 및 생육환경을 파악하기 위하여 국내 분포 및 자생지의 식생구조를 분석하였다. 분포 범위 조사 결과, 제주도를 비롯한 남해안의 도서지역에 주로 분포하는데, 제주도 남부지역 약 200~800m에 분포하며 가거도, 완도, 진도 등에 주로 분포하였다. 지역별 자생지의 입지분석 결과, 교목층의 수고는 제주도에서 17.3m로 가장 높고 가거도의 경우 11.3m로 가장 낮았다. 또한 가거도 자생지의 경우 노출암 비율 70.7%, 평균 경사도 약 $30^{\circ}$로 경사가 매우 급하고 토양층이 가장 빈약하였다. 반면, 제주도에서는 계곡 사면이나 완만한 경사의 산록지대에 주로 분포하였다. 자생지의 식생구조를 파악하기 위하여 수종별 평균중요도지수를 산출한 결과, 교목층에서는 붉가시나무가 가장 높았다. 아교목층의 평균중요도지수는 제주도, 완도, 진도 자생지의 경우 동백나무가 각각 150.93, 83.54, 91.38로 가장 높았는데 이는 동백나무의 밀도가 상대적으로 높았기 때문이다. 반면 가거도 자생지에서는 붉가시나무의 평균중요도지수가 66.55로 가장 높게 산출되었다. 자생지 내 수종의 흉고직경에 따른 수고의 분포는 제주도, 진도, 완도 자생지의 경우 붉가시나무와 기타 수종이 전체 층위에서 고르게 분포하였지만 가거도 자생지에서는 상층일수록 경쟁 종없이 단일종이 분포하는 단순림으로 나타났다. 이 같은 단순림에서는 일시적인 교란에 의해 상층 개체가 없어지면 안정적으로 후대 개체를 생산할 수 없기 때문에 숲 가꾸기와 같은 적극적인 조절이 필요한 것으로 판단된다. 종다양도지수 분석결과, 층위가 높을수록 균재도가 낮게 나타났다. 이와 같은 연구결과는 붉가시나무림의 조성이나 안정적 유지 등 인위적 조절을 위한 기초 자료로 활용 할 수 있을 것으로 판단된다.

• Korean Journal of Environment and Ecology
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• v.11 no.2
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• pp.166-176
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• 1997

To investigate the vegetation structure of Fraxinus mandshurica communith, twenty plots were set up and surveyed in the valley of Mt. Minjuji area that rises 700~1,100m above the sea level. Each plot has 100m$^{2}$ in size. By using the TWINSPAN of classification technique, total plots was divided into six communities. In the species composition analysis, it was expected that F. mandshurica community would derive from Quercus mongolica community. The F. mondshurica community was composed together of Carpinus laxiflora, Acer mono and Cornus controversa. It was turned out that F. mandshurica community was edaphic climax because the competition species not appeared. In the DBH distribution analysis, F. mandshurica appeared through all layers, and species diversity showed lower index(Shannon's index 0.72~0.82) because the community was stable. The number of mean individuals and species was about 111.5 and 11.0 per 100m$^{2}$ respectively.

• Korean Journal of Environment and Ecology
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• v.28 no.4
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• pp.393-403
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• 2014

The aim of this study was to use the information deduced from biotopemap in Boryeong, Chungnam province conducted in 2011 and to select the wildlife survey point. The information used for the study was deduced from the knowledge and experience of wildlife specialists and was realized by 6 environmental variables (Outside distance from food vegetation, Outside distance from farm land, Outside distance from forest, Human density, Outside distance from road, Outside distance from water). 6 environmental variables were modeled by map overlay method and the model could deduce the correlation of 94.72% as a result of comparing with occurrence information. The areas predicted to have many occurrences were rural landscapes, forests, and valleys, and they can be used to deduce the quality wildlife survey results in the limit of survey range (area, schedule, and budget). However, it had the limit points such as the inside of forests was excluded, all species did not prefer the same habitat. The following studies are needed for this part in the future.

• Journal of Mushroom
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• v.2 no.1
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• pp.21-27
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• 2004

Distribution and in vitro growth characteristics of entomopathogenic Paecilomyces species were studied based on the specimens and isolates deposited in Entomopathogenic Fungal Culture Collection (EFCC), Kangwon National University, Chuncheon, Korea. Paecilomyces species were frequently collected from different mountains and valleys and were almost distributed uniformly. Collection period of Paecilomyces species ranged from July to September, with most of the collections at the end of September. P. tenuipes was mostly collected one among different Paecilomyces species. The optimum medium for mycelial growth of P. tenuipes was PDA, whereas in other media such as SDAY and HMA also produced similar growth. The optimum temperature and pH levels were $25^{\circ}C$ and 6.0~7.0, respectively. Best carbon and nitrogen sources were dextrose and tryptone, respectively, while $KH_2PO_4$ was the best mineral source for mycelial growth. Highest mycelial growth was observed when the C/N ratio was 20:1.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.18 no.10
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• pp.681-687
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• 2017

We investigated the potential for wind-power generation using the wind produced by express trains. We built equipment to detect the wind velocity, including wind meters and a data analyzer. We considered various conditions that might change the wind. First, we measured the velocity and duration of the wind at three locations distinguished by the presence of a tunnel and a valley landscape. We analyzed the changes in the wind according to the geometric conditions. Also, we analyzed the changes in the wind according to three different heights relative to the train. We also compared the wind produced by a KTX train and an SRT train. Finally, we used the results to derive the wind power energy harvested from the wind and discuss the expected utility.

• 한국해양학회지
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• v.28 no.1
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• pp.35-46
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• 1993

To delineate water properties and current patterns in the spawning area of walleye pollock, hydrographic cast and current meter data collected in Strait, Gulf of alaska, were analysed, three water masses are identified in Shelikof Strait. A small amount of cold and dilute water ($<{\;}3^{\circ}C{\;}and{\;}<{\;}31.5\textperthousand$) originates from the lower Cook Inlet and flows southwestward close to the Alaska Peninsula coast. One branch of alaska coastal Current which enters the strait from the northeast comprises the main body of the upper and middle layers of the strait, and flows toward the southwest. Estimation of geostrophic baroclinic currents reveals that comparatively fast flow exists in the surface over the deepest portion of the strait, and most water exits through the southwestern entrance between Semidi and chirikof Is. On the other hand, a relatively slow-moving warm and saline ($>{\;}5^{circ}C{\;}and{\;}>{\;}32\textperthousand$) of the southwestern entrance flows northeasterly, and occupies the bottom layer in Shelikof Strait.

• Proceedings of the KGS Conference
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• 2002.05a
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• pp.95-98
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• 2002

본 연구는 안동지역에 있어서 이른바 명당이라고 하는 음택 풍수 경관을 조사하여 그 형태와 특징을 살펴보고자 하였다. 안동문화원에서 펴낸 $\boxDr$안동의 분묘$\lrcorner$ 에 나오는 분묘를 대부분 조사하고 이를 형기론적 입장에서 형국으로 분류하였다. 태백산에서 소백산을 잇는 낙동정맥 살의 문수산(1206m)에서 하나의 지맥이 남쪽으로 흘러 태자산, 박달산, 오적산, 학가산(870m), 보문산(643m), 검무산(331m)을 이루어내어 안동의 서쪽 산줄기를 형성하며, 태백산에서 백병산, 일월산, 주방산(주왕산), 보현산, 황학산, 오산으로 이어지는 산줄기가 우측을 이루어내어, 이들 우백호와 좌청룡이 안동군 풍천면의 구담리에서 마주하게 된다. 그 사이로 안동군, 예안현 등이 입지하였다. 이러한 안동의 산세에 따라 낮은 구릉, 완만한 사면 및 높은 배후 산지가 전개되며 낙동강 본류와 지류가 흘러 다양한 형국이 나타나게 된다. 안동의 경우는 날짐승(봉, 학, 꿩), 꽃(모란, 연꽃, 칡넝쿨), 길짐승(닭), 들짐승(거북, 뱀), 물건(등잔, 가마솥, 밥상), 용, 달 등이 33개가 나타난다. 이들의 분포를 살펴보면 크게 낙동강 본류 이북 쪽에 집중한다. 이들 명당은 고도 상으로 해발고도 200미터 부근에 대부분 입지한다. 무릇 명당이란 안산과 조산을 넘어 득수가 잘 이루어져야 하므로 낙동강 본류를 중심으로 하고 그 지류를 향하여 분포하는 것은 당연하다 이들 명당의 형태와 공통된 특징을 살펴본 결과 명당은 반개방성, 중첩성, 안정성, 조화성, 균형성의 5가지 특징이 나타나는 곳이다. 이러한 명당의 특징은 태조산, 중조산, 소조산를 거쳐 주산 아래 산이 겹겹이 에워싸게 되고, 계곡물의 여러 줄기가 합수하고 물이 역류하지 않으며 잘 감아도는 곳으로 표현할 수 있다 이러한 명당의 기본적인 원리는 장풍(藏風)과 득수득파(得水得破)이다. 장풍과 득수란 '국'(局), 즉 산줄기와 수계로 이루어진 일정한 범위 속에 만물이 생태계 속에서 살아가는 모습인 '체형(體形)'의 의미가 나타나야 한다는 것이다. 그러나 이러한 의미는 시대에 따라 달라질 수 있는 것이다.

• Korean journal of applied entomology
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• v.14 no.4 s.25
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• pp.215-219
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• 1975

The number of instars of pear sawfly larvae (Janus piri Okamoto) collected front field pear trees, were determined by measuring the width of head capsule, and the growth ratio in each instar was also studied. 1. The larval head width had six distinct peaks, which suggests that the larva of this insect passes six instars. 2. The head width tended to increase as the instars avdance, except in tile first and second instars. The coeffieient of variation decressed as the instars advanced. The growth ratio, which was similarly great in the first and second instars, decreased as the instars advanced. 3. Gains' and Campbell's formulae seemed to be more suitable than Dyer's for the determination of larval instars of this insect by the measurement of headwidth. 4. The larval instars could be inferred from the extent of damage to pear tree by this insect; that is the larvae in the second to fourth instars usually gave slight and invissible damage, while those in the fifth to sixth instars gave rapid and severe damage.

• Korean Journal of Environment and Ecology
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• v.18 no.2
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• pp.205-209
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• 2004

For the purpose of this study was accumulating histological data of skin some amphibia near Chiri Mt. and Moodeung Mt. Analyzed Anura and Caudata were Rana nigromaculata, Rana rugosa, Rana catesbeiana, Hynobius leechii. The histological prepared skin of frogs were compared, of which were selected from dorsal and belly. Excretory glands were identified granular glands, mucous glands, serous glands, vacuoles and excretory ducts in epidermal and dermal tissue. And developing excretory glands, well developed excretory glands and post developing excretory glands were identified also. These results were significantly as basal data on the comparative epidermal skin histology on some Korean Amphibia. Probably these glands of amphibian skin could be infered which were adaptable structure to ecological suffered condition. Following study of these results were more considerable data for comparative histology, comparative anatomy and comparative physiology and ecology of Amphibia.

• Korean Journal of Weed Science
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• v.31 no.1
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• pp.24-33
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• 2011

Wingstem, Verbesina alternifolia of North America origin, was introduced in 1981 into the Korea terrestrial ecosystem. It scattered in a number of places with limited population size in most cases. Its population has spread into the forest at the Chiaksan National Park and occupied the natural vegetation. Distributions of wingstem were the most popular along the 12 road sites, especially in Route 453, Seohwa-myeon, Inje-gun, Gangwon-do and in Route 31, Yeongyang-gun, Gyeongsangbuk-do with 60% coverage of wingstem. It was also distributed in the 5 forest sites and 5 riversides. Despite of its attractive yellow flower, it is recommended to limit cultivation in the nature reserve or other ecosystem of conservation value.