• Title/Summary/Keyword: Research Forest

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Computations of Forest Road Density considering for Forest Terrain and Characteristics (산지 지형 및 특성을 고려한 임도밀도 산정)

  • Jung, Do Hyun;Cha, Du Song;Park, Chong Min;Lee, Joon Woo;Ji, Byoung Yun;Chun, Kwon Suk;Kim, Jong Yoon
    • Journal of Korean Society of Forest Science
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    • v.94 no.3 s.160
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    • pp.168-177
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    • 2005

  • To provide the basic policy informations for environment-friendly and economical construction of green forest road, forest road density considering for the forest terrain and characteristics was computed. As results, designing the effective forest management and protection, standard forest road density as a social overhead capital (SOC) concept was computed to 8.57 m/ha. Considering as based facilities for forest management, we also optimal forest road density for preparing the sustainable forest management system was computed to 14.01 m/ha.

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Antimicrobial Activity against Food-hazardous Microorganisms, Dermatophytes, and Pytopathogens and Antioxidative Activity of Sancho Oil (식품위해성균, 피부사상균 및 식물성 병원균에 대한 산초유의 항균 활성 및 항산화 활성)

  • Kim, Hak Gon;Kang, Seung Mi;Yong, Seong Hyeon;Seol, Yu Won;Choi, Eun Ji;Park, Jun Ho;Yu, Chan Yeol;Solomon, Tamirat;Choi, Myung Suk
    • Korean Journal of Medicinal Crop Science
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    • v.28 no.1
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    • pp.38-46
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    • 2020

  • Background: Although Sancho (Zanthoxylum schinifolium Siebold & Zucc) oil has traditionally been used for its antibiotics properties, there is currently a lack of scientific evidence regarding its biological activities. In this study, we investigated the antimicrobial and antioxidant activities of Sancho oil against food-hazardous microorganisms, phytopathogens, and dermatophytes. Methods and Results: We investiated the antimicrobial activity of Sancho oil against 11 food-hazardous microorganisms, nine phytopathogens, and six dermatophytes. The Sancho oil was found to show the strongest antibacterial activity against Shigella flexneri and Listeria spp. Sancho oil also showed high antifungal activity against plant pathogens, particularly Fusarium oxysporum, and showed antimicrobial activity against dermatophytes such as Trichophyton rubrum, Microsporum canis and Candida albicans. The antioxidant activity of Sancho oil was measured using the DPPH method, and was found to be stronger than that of unrefined oil. Moreover, this activity increased with increasing oil concentration. Conclusions: We found that Sancho oil showed differing antimicrobial activities against food-hazardous microorganisms, dermatophytes, and plant pathogens. The antimicrobial activity spectrum of Sancho oil was not broad and varied among microbial strains. On the basis of our findings, we consider that Sancho oil could be used an antibacterial material for food-borne S. flexneri and Listeria spp., a biopesticide for Fusarium spp., and a treatment for dermatophytes such as T. rubrum.

  • https://doi.org/10.7783/KJMCS.2020.28.1.38 인용 PDF KSCI HTML

Recalculation of Forest Growing Stock for National Greenhouse Gas Inventory (국가 온실가스 통계 산정을 위한 임목축적 재계산)

  • Lee, Sun Jeoung;Yim, Jong-Su;Son, Yeong Mo;Kim, Raehyun
    • Journal of Climate Change Research
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    • v.7 no.4
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    • pp.485-492
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    • 2016

  • For reporting national greenhouse gas inventory in forest sector, the forest growing stock from the National Forest Inventory (NFI) system has used as activity data sources. The National Forest Inventory system was changed from rotation system by province to annual system by 5 years across the country. The forest growing stocks based on the new inventory system produced a different trend compared to the previous estimations. This study was implemented to recalculate previous forest growing stocks for time series consistency at a national level. The recalculation of forest growing stock was conducted in an overlap approach by the IPCC guideline. In order to support the more consistency data, we used calibration factors between applied stand volumes in 1985 and 2012, respectively. As a result, the time series of recalculated forest growing stock was to be consistency using the overlap approach and the calibration factor with the lower middle/middle site index. According to the applied overlap period, however, we will recalculate activity data using more complete data from national forest inventory system.

  • https://doi.org/10.15531/KSCCR.2016.7.4.485 인용