• 한국지리정보학회지
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• 제16권2호
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• pp.30-46
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• 2013

본 논문은 생태마을 입지분석에 필요한 표준화된 분석요소와 평가기준을 정립하고, GIS를 이용한 생태마을 입지분석 모델을 개발하여 실제 적용한 결과를 제시하였다. ArcGIS 모델빌더(Model Builder)를 활용하여 개발된 모델은 사용자가 GIS 프로그램에 익숙하지 않더라도 쉽게 사용할 수 있도록 사용자 편의성을 최대한 고려하였다. 이를 위해 첫째, 기존연구 분석을 바탕으로 크게 자연환경 요소, 인문/사회적 요소, 법제적 요소로 분류되는 18개의 보편적이고 정량적인 생태마을 입지분석 요소와 평가기준을 선정하였고, 각 요소의 등급화 및 점수화 방안을 제시하였다. 둘째, ArcGIS 모델빌더를 활용하여 18개 입지분석 요소의 주제도 작성과정과 생태마을 입지로 적합한 지역을 도출하는 중첩분석 연산과정을 체계적으로 정리한 생태마을 입지분석 모델을 개발하였다. 셋째, 개발된 모델의 유효성을 검증하기 위하여 포항시 북구를 테스트 사이트로 생태마을 입지분석을 수행하였다.

• The Korean Journal of Ecology
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• 제12권4호
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• pp.219-236
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• 1989

The effect of salinity on the seed germination and seedling growth of Pinus densiflora for. erecta Uyeki were studied under the controlled conditions in the growth chamber. The seeds were sorted into three classes in weight such as large ($15.49\pm$1.63mg), medium($10.61\pm$1.38mg), and small ($6.57\pm$1.33mg) to determine the role of seed weight in germination and seedling growth of the pine. Polymorphic seeds of the pine were germinated an salinity range of 0 to 1.5% NaCl under various temperature ($10^{\circ}$ $-25^{\circ}$ with $5^{\circ}$C interval of constant temperature, and $10^{\circ}$ $-20^{\circ}$C, $15^{\circ}$ $-25^{\circ}$C of alternating temperature) in order to determine their germinability and seeding growth. In control plot, there was little difference of germination percentage among the seed weight classes, but in saline plot, the larger seeds generally had a higher percentage and rate of germination. There occurred synergistic interaction between salinity and temperature in the germination and the increase of temperature enhanced germination of seeds at the same salinity level. Alternating temperature regimes of $15^{\circ}$-$25^{\circ}$C yielded maximum germination and no germination was occurred at $10^{\circ}C$. The germination at alternating temperature showed higher germination percentage than at constant temperature. The percentage and of germination decreased drastically with increased salinity level to 1.00%; no germination was occurred at 1.50% salinity level. The growth fo sddelings from larger seeds was better than that of smaller seeds at the same salinity and temperature. The hypocotyl and radicle were more sensitive than cotyledon to the increased salinity stress.

• 가정과삶의질연구
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• 제29권6호
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• pp.9-25
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• 2011

This study was performed to explore the factors that affect debt-use intention of young defaulters. In addition, this study compares three models that predict the intention to use debt by young defaulters: the theory of reasoned action and two variations of it. Specifically, this study proposes an extended theory of reasoned action by introducing Ao in place of the cognitive structure in the theory of reasoned action. In addition, this study proposes Ao as an independent variable that acts on BI rather than a dependent variable. Self-administered questionnaires were completed by 196 young defaulters attending a credit management education session held by the Credit Counseling & Recovery Service in Kwang-ju, Korea. Based on the study, the conclusions are as follows: the extended theory of reasoned action as proposed in this article most suitably explained the intention to use debt by young defaulters. It was also found that young defaulters were affected by attitudes toward debt, attitudes toward using debt, and subjective norms. It is therefore suggested that an attitudinal message would change the behavior effectively for young defaulters. The findings appeared to support the usefulness of the extended theory of reasoned action and the role of Ao as an independent variable as proposed in this article to explain the intention to use debt by young defaulters. These findings have an important theoretical meaning in that they modify two existing attitude theories in the context of consumer behavior.

• Journal of Ecology and Environment
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• 제29권4호
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• pp.405-410
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• 2006

Landscape changes for 20 years between 1981 and 2001 in the Wangsuk stream basin located on the central Korea were investigated on the basis of physiognomic vegetation map made from the aerial photograph interpretation and field check. Changes of landscape structure were noticeable in agricultural field and forest landscape elements. Changes in the agricultural fields due to transformation of agricultural pattern into the institutional agriculture dominated landscape change, although urbanization also contributed to such change. The former change due to change of food production structure originated from socio-economic development during this period and the latter to the overpopulation of Seoul. As energy sources for heating and cooking, fertilizer, and fodder for livestock transform from plant materials to fossil fuel, manufactured one, and grain, succession of forest escaped from direct human disturbance dominated change of landscape structure in forested land. Differently from the positive landscape change in the upper area, change in the lower area deteriorated landscape quality by increasing artificial land. It was estimated that such landscape deterioration in the Wangsuk stream basin would influence water quality of the stream. In order to realize sustainable land-use against such environmental degradation, systematic environmental management based on landscape ecological perspective such as "an eco-plan for creating riparian vegetation belt," which is under preparation by Ministry of Environment, was recommended.

• Journal of Microbiology and Biotechnology
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• 제18권5호
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• pp.821-827
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• 2008

The unicellular green alga Dunaliella salina is a halotolerant eukaryotic organism. Its halophytic properties provide an important advantage for open pond mass cultivation, since D. salina can be grown selectively. D. salina was originally described by E. C. Teodoresco in 1905. Since that time, numerous isolates of D. salina have been identified from hypersaline environments on different continents. The new Dunaliella strain used for this study was isolated from the salt farm area of the west coastal side of South Korea. Cells of the new strain were approximately oval- or pear-shaped (approximately $16-24\;{\mu}m$ long and $10-15\;{\mu}m$ wide), and contained one pyrenoid, cytoplasmatic granules, and no visible eyespot. Although levels of $\beta$-carotene per cell were relatively low in cells grown at salinities between 0.5 to 2.5 M NaCl, cells grown at 4.5 M NaCl contained about a ten-fold increase in cellular levels of $\beta$-carotene, which demonstrated that cells of the new Korean strain of Dunaliella can overaccumulate $\beta$-carotene in response to salt stress. Analysis of the ITS1 and ITS2 regions of the new Korean isolate showed that it is in the same clade as D. salina. Consequently, based on comparative cell morphology, biochemistry, and molecular phylogeny, the new Dunaliella isolate from South Korea was classified as D. salina KCTC10654BP.

• ALGAE
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• 제28권4호
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• pp.365-369
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• 2013

The objective of this study was to determine the optimal blade size and timing to transplant seed-stock of Ecklonia cava Kjellman onto the reef structure. We used the modified artificial stepped reef structure. A total of 14 units (3.0 m length ${\times}$ 3.5 m width ${\times}$ 1.1 m height) were deployed 7-8 m deep under the water to examine the optimal blade size and timing to transplant seed-stock of E. cava onto the structures. Sporophytes of E. cava <1 cm in length were all died within 1 month of transplantation. The blades of 5-10 cm in length which were transplanted in March 2007 survived and grew well on the artificial reefs. Growth rates of 5-10 cm size class were higher than those of longer blade sporophytes (20-30 cm size class, transplanted in April) while the survival rates showed no difference between the classes of blade size. Both classes of 5-10 and 20-30 cm in length grew until July, and a reduction in size had occurred in September. These results indicate the importance of the blade size of E. cava and timing for successful transplantation of the seaweed on artificial reef structures.

• 생태와환경
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• 제54권3호
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• pp.190-198
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• 2021

사람 아이치바이러스(Aichivirus A; AiV-A)는 positivesense single-strand RNA 비외피 바이러스로 지난 10년 동안 하수, 강, 지표 및 지상의 다양한 물환경에서 전 세계적으로 검출이 보고되고 있다. 지하수 등 물환경에서 AiV-A 진단을 위한 고감도 및 특이성이 우수한 방법의 개발이 요구됨에 따라, 본 연구에서는 기존 및 신규 설계된 프라이머 세트를 기초로 역전사(RT) 및 이중 중합효소연쇄반응이 가능한 조합을 개발하였다. 개발한 방법을 국내 음용 지하수 시료에 적용 및 평가하였으며, 그 결과 지하수 시료에서 AiV-A를 성공적으로 검출 및 동정할 수 있는 RT-nested PCR primer sets가 선정되었고 후속적으로 동정할 수 있는 절차가 고안되었다. 본 연구 결과는 지하수 등 물 환경에서 AiV-A 오염을 탐지하기 위한 모니터링 시스템 마련에 기여할 것으로 기대된다.

• 식물분류학회지
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• 제53권1호
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• pp.1-8
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• 2023

Sustainable habitats play a significant role in determining the survival and habitat preservation of endangered species. To conserve the endangered species Iris dichotoma Pall. and its habitat in Taeanhaean National Park, we collected seeds from a natural population and germinated and propagated them in a greenhouse. In 2019, the propagated individuals of I. dichotoma were transplanted at two study sites in Taeanhaean National Park. After conservation translocation, annual monitoring was conducted from 2020 to 2022, and factors related to the survival and growth of I. dichotoma (clonal propagation rate [%], the flowering rate [%], the population density [individual/m²], the maximum leaf bundle length [height; cm], the maximum leaf bundle width [cm], and the pedicel length [cm]) were measured. According to the results of the monitoring of the flowering and fruiting periods for three years after transplantation, 82.4% of individuals in total were found to have survived. During 2020 to 2022, the mean population density (individual/m²) increased from 0.36 to 0.42 and the size of the leaf bundle length and the width both decreased compared to the corresponding figures in 2019 (p < 0.05). According to the findings here, the transplanted population of I. dichotoma is considered to have adapted successfully to its new site in Taeanhaean National Park.

• Journal of Forest and Environmental Science
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• 제19권1호
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• pp.85-98
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• 2003

한국임학회지 (1962년의 1호~2002년의 91권 6호)에 게재된 특용자원식물 관련 논문에서 식 음용식물, 약용식물, 사료식물, 조경식물, 섬유식물, 산업용식물 및 밀원식물로 분류하고 그 내용에 따라 입지환경, 생태, 생리, 번식, 조림(또는 무육, 재배), 유전 육종, 분류(또는 식별), 병 충해와 방제, 동물피해와 방제, 성분분석, 식생정보, 생물공학, 경영 경제 빛 총설로 나누었다. 총 1,434편의 발표 논문 중 유용식물자원을 대상으로 한 논문은 27.6%를 차지하는 396편이었고, 내용은 식생정보 60편(15.2%), 생리 56편(14.1%), 유전 육종 56편(14.1%), 번식 53편(13.4%) 및 생태 37편(9.3%)이었다. 조림(무육 재배)은 11편(2.8%) 으로 특용자원식물의 규모경영이 이루어지지 않고 있음을 시사하고 있으며, 이것은 경영 경제 분야가 6편(1.5%)인 것과 맥을 같이 하고 있었다. 연구대상 식물은 잣나무(42편), 아까시나무(23편), 밤나무(14편) 및 은행나무(14편) 순으로 높았고, 이 식물들과 관련한 연구내용은 번식, 생리, 유전 육종, 생태 및 병 충해 순이었다. 연구의 목적, 내용, 결과 및 대상식물 등을 고려하여 보면, 1) 초본식물에 대한 보다 많은 연구, 2) 타산업 또는 학분 분야와의 공동연구, 3) 자원 보전적 연구 및 4) 연구주체자 간의 연구결과의 공유 등이 매우 요망된다.

• 한국환경생태학회지
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• 제26권2호
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• pp.219-232
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• 2012

본 연구는 인왕산의 과거 기록자료 및 문화경관지역에 나타난 소나무림의 분포 특성을 파악하여 소나무림 경관복원을 위한 관리방안을 수립하는데 목적이 있다. 인왕산의 과거 소나무림은 정선, 장시흥, 강희언의 산수화에서 잘 표현되어 있는데, 주로 동사면 능선부의 암반 주변을 표현하고 있었다. 인왕산 사진자료는 1800년대 말부터 기록되어 있는데 소나무림은 주로 서측 사면 저지대와 능선부에 분포하고 있었다. 인왕산의 문화유적 주변과 암반 주변 경관을 분석한 결과 대부분 소나무림이 우점하고 있었다. 인왕산의 과거 소나무림 경관을 형성하고 있는 지역을 대상으로 현존식생을 분석한 결과 소나무림을 유지하고 있는 지역은 51.87%, 인공림 변화한 지역이 25.80%이었다. 산림 저지대 소나무림은 대부분 시가화지역(10.16%)으로 변화되었다. 인왕산 소나무림 경관 복원을 위한 관리유형구분은 보전관리, 소나무복원관리, 유지관리로 설정하였다. 보전관리는 소나무림 분포지와 암반 분포지역으로 설정하였고 소나무 복원관리는 능선부의 자생종 낙엽활엽수 분포지, 외래종 식생 분포지와 산림 내 훼손지역으로 설정하였다. 유지관리지역은 인왕산 저지대 시가화지역과 인왕산 정상부의 군부대 입지지역으로 설정하였다.