• 제목/요약/키워드: Research Forest

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공간분석에 의한 산불발생확률모형 개발 및 위험지도 작성 (Developing the Forest Fire Occurrence Probability Model Using GIS and Mapping Forest Fire Risks)

  • 안상현;이시영;원명수;이명보;신영철
    • 한국지리정보학회지
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    • 제7권4호
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    • pp.57-64
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    • 2004
  • 우리나라는 산불을 효율적으로 방지하기 위하여 기상, 지형, 임상을 중심으로 산불발생위험을 판정할 수 있는 알고리즘 및 관련인자의 DB구축을 통한 웹기반 산불위험예보시스템을 개발하여 활용 중에 있다. 그러나 우리나라의 경우, 자연적으로 산불이 발생하는 미국, 캐나다와 달리 인위적인 산불이 대부분을 차지하고 있어 우리나라에 적합한 지형 및 연료인자와 산불발생에 관한 기초연구가 지속적으로 필요한 실정이다. 따라서 본 연구는 현재 실용화하고 있는 산불위험예보시스템의 알고리즘 개선을 위한 기초연구로서 산불발생지역에 대한 GIS를 이용한 공간분석과 로지스틱 분석을 이용하여 산불발생위험지역을 구분할 수 있는 산불발생확률모형을 개발하였다.

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Importance-Performance Analysis of Mountain Village Promotion Projects in the Forest Sector by Upper-Level Local Governments

  • Kang, Byung-Hoon;Kim, Seong-Hak;Chae, Jin-Hae
    • 인간식물환경학회지
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    • 제24권6호
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    • pp.707-718
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    • 2021
  • Background and objective: Due to the recent crisis of extinction in local areas, the mountain village promotion policy is recognized as an important task. This study examined the priorities of major policy projects in the forest sector that affect mountain village promotion. Methods: For research methods, literature search, expert advisory meetings, and a survey were conducted. The survey was conducted on 42 policy stakeholders from June 1 to August 13, 2021. The literature search was based on policy projects in the forest sector by 8 upper-level local governments including mountain villages. For questionnaire items, 173 forest policy projects were classified into 27 types through expert review, and the importance and performance of each type were rated on a 5-point Likert scale. Paired t-test, IPA, Locus for Focus model, and Borich needs assessment were used as the analysis methods, and the statistical program SPSS 21.0 was used as the analytical tool. Results: The results showed that 'creating forest-related jobs' and 'supporting cultivation of professional forestry workers' both showed high importance and performance, implying that they would show an effect in mountain village promotion. 'Creating forests for environmental improvement', 'discovering forest cultural assets' 'establishing and boosting forest tourism', 'providing forest therapy services', 'creating forest-related jobs', 'supporting community revitalization', and 'urban-rural exchanges' were found to be the types that needed improvement and concentration for mountain village promotion. In particular, 'creating forests for environmental improvement' and 'discovering forest cultural assets' were derived as priority considerations for mountain village promotion policies. Conclusion: In summary, it was found that in order to promote mountain villages, various content projects must be improved and carried out to enhance the physical environment and revitalize mountain villages.

산림경영인증의 사회·경제적 효과 분석: 제주시험림의 사례 (Social and Economic Effects of Forest Management Certification: a Case of Jeju Experimental Forest)

  • 이성연;이호상;정영교;주린원
    • Journal of Forest and Environmental Science
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    • 제28권4호
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    • pp.254-262
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    • 2012
  • The purposes of the research in related to FSC in JuJe experimental forests (JJEFs) is to make pre and post socio-economic comparisons and play an important role of FSC, and recognition change to FSC timbers and to make an analysis to consumers' needs. As the results of onsite survey in 2005, respondents show a high awareness of SFM and FSC in comparisons of 2004, and the JJEFs play a critical role to make SFM and FSC advertisement worldwide, such as consumers' satisfaction to SFM and FSC is high. Hence provision of JJEF information such as job creation and socio-economic impacts to stockholders could make their satisfaction improving. Most of respondents to the FSC of JJEF represent a positive rate while low awareness to FSC timber is represented. Therefore, necessary information about JJEF FSC with forest management, process and consumption pattern of FSC is required into citizens. The final results prove that FSC effects such as 1.3 billion won direct additional benefits in terms of socio-economic aspects including environmental benefits and job creation and economic effects are enough to offset 1.3 billion won additional costs.

GIS기반 국내 대나무 자원 평가 인벤토리 구축과 활용 방안 (Application of Inventory Construction for GIS-based Bamboo Resource Assessment)

  • 유병오;박준형;박용배;정수영;이광수
    • 한국지리정보학회지
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    • 제20권4호
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    • pp.77-88
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    • 2017
  • 본 연구에서는 우리나라 대나무 자원의 평가를 위하여 GIS 기반의 인벤토리를 구축하고 활용 방안을 제안하였다. 대나무 자원의 일반현황, 임황 및 지황 정보, 입지토양 정보 등의 인자를 추출하고 현지표본점 조사를 통해 획득한 자료를 활용하여 면적 및 축적량을 산출하여 통합하였다. 구축된 인벤토리는 방치되어 있는 대나무 자원의 건강성 및 지속성 확보는 물론 대나무의 기능 증진을 위한 장기적인 목표와 방향을 설정할 수 있는 의사결정 도구로 활용할 수 있을 것으로 판단된다.

Monitoring of Forest Burnt Area using Multi-temporal Landsat TM and ETM+ Data

  • Lee, Seung-Ho;Kim, Cheol-Min;Cho, Hyun-Kook
    • 대한원격탐사학회지
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    • 제20권1호
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    • pp.13-21
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    • 2004
  • The usefulness of the multi-temporal satellite image to monitoring the vegetation recovery process after forest fire was tested. Using multi-temporal Landsat TM and ETM+data, NDVI and NBR changes over times were analyzed. Both NDVI and NBR values were rapidly decreased after the fire and gradually increased for all forest type and damage class. However, NBR curve showed much clearer tendency of vegetation recovery than NDVI. Both indices yielded the lowest values in severely damaged red pine forest. The results show the vegetation recovery process after forest fire can detect and monitor using multi-temporal Landsat image. NBR was proved to be useful to examine the recovering and development process of the vegetation after fire. In the not damaged forest, however the NDVI shows more potential capability to discriminate the forest types than NBR..

First Report of Botryosphaeria dothidea Responsible for Branch Dieback and Canker on Hovenia dulcis in South Korea

  • Lee, Dong-Hyeon;Park, Ji-Won;Kim, Chul-Woo;Kwon, ChunGeun;Kim, Seong Hak
    • Journal of Forest and Environmental Science
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    • 제38권2호
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    • pp.137-139
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    • 2022
  • In 2021, severely infected trees showing distinct symptoms including branch dieback, necrotic lesions on branches, cankers on the shoots, and dark brown discoloration on the stem on Hovenia dulcis were found in the provincial forest of Jeollabuk-do located in Jangsu, South Korea. The causal agent of the pathogen was identified as Botryosphaeria dothidea based on morphology and sequence comparisons. This is the first confirmed report of B. dothidea causing branch dieback and canker on H. dulcis.

표고 신품종 "천백고"의 육종 및 특성 (Characteristics of Newly Bred Shiitake Strain "Chunbaegko")

  • 박원철;박영애;이봉훈;가강현;박지헌
    • 한국균학회지
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    • 제41권1호
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    • pp.28-32
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    • 2013
  • "천백고" 품종은 Di-mon 교잡에 의해 육성되어 품종으로 등록요건에 적합한 조건 시험을 거쳐 품종출원 되었다. 균사생장은 $25^{\circ}C$에서 가장 우수하였다. 버섯의 형태는 평반구형의 중엽 중육으로 갓직경은 52 mm이고 주름살 측면은 평활형이며 주름살폭은 보통으로 봄에 최고의 품질인 백화고가 발생되었다. 도목살수에 의한 버섯발생에 적합한 품종으로 집중발생형이다. 버섯의 발이온도는 $14{\sim}22^{\circ}C$로 발생시기가 4월, 9~10월인 중온성 품종이다. 재배시험지에서 4년간 표고 원목 1 $m^3$당 140 kg의 표고가 생산되었다.

Color Degradation, Hardness and Abrasion Resistance of Coated Black Cherry Lumber

  • Kim, Jong-In;Suh, Jin-Suk;Lee, Sang-Min;Jeong, Ho-Won;Park, Sang-Bum
    • 한국가구학회지
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    • 제22권3호
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    • pp.239-243
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    • 2011
  • In this study, the coating properties and surface performance of exotic cherry wood (Prunus serotina) were estimated, reviewing color difference, hardness and abrasion resistibility in order to evaluate probability as construction interior members such as wall and floor. The reduction effect of color difference was represented in the order of water soluble color stain, water soluble transparent stain, and non-coated lumber. However, the tendency of distinct difference according to wood grain pattern was not found. The wavy grain lumber showed better properties in hardness and resistance to abrasion than quarter grain. In conclusion, it was supposed that the application of wavy grain lumber in wall and floor as interior materials would be acceptable in practicality.

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Researches on Populus in Korea for Various Purposes

  • Kim, Chul-Woo;Cha, Du-Song;Choi, Yong-Eui;Koo, Yeong-Bon;Choi, Wan-Yong;Oh, Jae-Heon;Yi, Jae-Seon
    • 한국산림과학회지
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    • 제98권5호
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    • pp.513-523
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    • 2009
  • Many species, cultivars, and hybrids in Populus have been introduced and developed by the scientists of Department of Forest Genetic Resources, Korea Forest Research Institute in Korea. P. alba ${\times}$ glandulosa, P. euramericana, P. nigra ${\times}$ maximowiczii, P. koreana ${\times}$ P. nigra var. italica, and P. davidiana have been studied from many aspects, i.e., genetics, breeding, physiology, propagation, silviculture, biomass production, biotechnology and phytoremediation. These precedent results will provide a sound basis for a newly-arising research on short-rotation coppice as one of renewable resources and phytoremediation plants. It was found that there were many promising varieties and clones for these purposes. However, minute analysis on specific gravity and caloric values for those plants should be followed under several silvicultural and rotational systems.

Antioxidant and Anticancer Activities of Leaves Extracts from Acer tegmentosum

  • Eo, Hyun Ji;Park, Gwang Hun;Kim, Da Som;Kang, Yeongyeong;Park, Youngki
    • 한국자원식물학회지
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    • 제33권6호
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    • pp.551-557
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    • 2020
  • In this study, we were performed to elucidate the antioxidant and anticancer activity by leaves extracts from Acer tegmentosum (AT-L). In DPPH, ABTS radical scavenging activity, the AT-L revealed the high scavenging activity. Especially, the AT-L measured the highest ABTS radical scavenging activity, which is higher than ascorbic acid. The types of human cancer cells for evaluating the anticancer activity were colorectal cancer (SW480), prostate cancer (PC-3), breast cancer (MCF-7), pancreatic cancer (AsPC-1), lung cancer (A549) and liver cancer (HepG2). Human cancer cell viability was measured using MTT assay. Treatment of the AT-L decreased the cell viability and induced apoptosis in SW480 cells. These results suggest that extracts of the AT-L can be used as supplementary material for developing the natural antioxidant and anticancer drug for human cancer cells.