• 제목/요약/키워드: university forest

검색결과 11,254건 처리시간 0.034초

Forest Management and Forest Resources in Bangladesh

  • Ahmed, Sheikh Ali;Chong, Song-Ho;Chun, Su-Kyoung;Kim, Jong-In
    • 한국가구학회지
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    • 제18권2호
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    • pp.129-137
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    • 2007
  • Total forest land in Bangladesh is about 2.5 million hectare which is 17% of total land area. Bangladeshi forest is mainly classified into three categories- 1) Hill forest 2) Sal forest and 3) Mangroves. This forest land area is decreasing day by day. But in past decayed due to some policies, the total forest land area is increasing slowly. By this planning both government and the local people in the community are being benefited. This paper mainly discussed about the past, present and future trend of forest condition, forest land uses, sustainable forest planning and forest management.

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Establishment of Optimal Timber Harvesting Model by Using Goal Programming

  • Jang, Jae-Young;Choi, Sang-Hyun;Woo, Jong-Choon
    • Journal of Forest and Environmental Science
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    • 제28권1호
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    • pp.30-36
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    • 2012
  • The total yield of Pinus koraiensis stands was reviewed along forest function by using goal programming, which is one of the operations research techniques. The 4 kinds of management goals are set to identify timber production in the Research Forest of Kangwon National University. As a result, scenario 1 was estimated the best timber production over 2,073 ha area and also 588 ha in the third quarter was showed the most timber harvest. The rate of timber harvest was separated by 10 to 50 percent in non-timber forest function in the scenario 1 and that model was applied to the Research Forest of Kangwon National University. The structure of the area and volume is showed to be balanced quarterly when rate of timber harvest at 10 to 20 percent.

병풍쌈의 종자 및 임분별 생장 특성 (Seed Characteristics of Parasenecio firmus Kom. and Its Growth Comparison among Forest Stands)

  • 박완근;김영설;이학봉;김유신;김남준;김남영
    • Journal of Forest and Environmental Science
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    • 제26권3호
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    • pp.219-223
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    • 2010
  • It has long been recognized that wild vegetation are sort of improving fitness. Many peoples are now ingesting them instead of the vegetables that are grown in green house. In this regard, Parasenecio firmus, which is considered to be one of the rare species in Korea, has been given a lot of attentions as edible green plants recently. Hence it may be necessary to provide the information people who want to commercially cultivate the plants. Regarding appropriate forest stands that are fit for the cultivation. Firstly, we collected the seeds from 4 natural habitats to find out how many seeds are fully matured in the natural conditions. The quality of the seeds collected were found to be very low. However, it appeared as clear differences when screened seeds were grown in covered seed beds over winter. In this case the germination rate of the seeds was 95%, indicating that there may be no difficulty for mass production of plantlets. Secondly, in the field of planting test in an appropriate cultivating site among 6 of forest stands, those in Pinus koraiensis stand were the highest in survival rate, but somewhat low with those in Quercus mongolica and broad-leaved stands. Thus, it was demonstrated that forest stands dominated with conifer like P. koraiensis are more appropriate for the cultivation of P. firums.

지속가능한 산림경영을 위한 기준 및 지표의 산림기능구분에 대한 적용성 연구 (A Study to the Applicability of Forest Function Type by Criterias and Indicators for Sustainable Forest Management)

  • 우종춘;장재영;신현지
    • Journal of Forest and Environmental Science
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    • 제21권1호
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    • pp.1-15
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    • 2005
  • 지속가능한 산림경영을 위하여 우리나라는 여러 가지 프로세스 중에 몬트리올 프로세스를 채택하고 있다. 본 연구에서는 우리나라에 적용가능한 7개 기준, 27개 지표를 산림의 6가지 기능에 적용하였다. 산림기능에 대표성, 적합성, 가능성 기준과 지표를 각각의 산림 상태와 목표로 하는 방향을 고려하여 가장 비중있게 적용되는 기준과 지표를 선정하였다. 그리고 각각 다른 산림에 모두 같은 기준과 지표를 가지고 산림을 평가할 수는 없으며 이를 적용하기 위해서는 산림에 대한 정확한 데이터와 지식이 필요하다고 사료된다.

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Comparison of vegetation recovery according to the forest restoration technique using the satellite imagery: focus on the Goseong (1996) and East Coast (2000) forest fire

  • Yeongin Hwang;Hyeongkeun Kweon;Wonseok Kang;Joon-Woo Lee;Semyung Kwon;Yugyeong Jung;Jeonghyeon Bae;Kyeongcheol Lee;Yoonjin Sim
    • 농업과학연구
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    • 제50권3호
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    • pp.513-525
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    • 2023
  • This study was conducted to compare the level of vegetation recovery based on the forest restoration techniques (natural restoration and artificial restoration) determined using the satellite imagery that targeted forest fire damaged areas in Goseong-gun, Gangwon-do. The study site included the area affected by the Goseong forest fire (1996) and the East Coast forest fire (2000). We conducted a time-series analysis of satellite imagery on the natural restoration sites (19 sites) and artificial restoration sites (12 sites) that were created after the forest fire in 1996. In the analysis of satellite imagery, the difference normalized burn ratio (dNBR) and normalized difference vegetation index (NDVI) were calculated to compare the level of vegetation recovery between the two groups. We discovered that vegetation was restored at all of the study sites (31 locations). The satellite image-based analysis showed that the artificial restoration sites were relatively better than the natural restoration sites, but there was no statistically significant difference between the two groups (p > 0.05). Therefore, it is necessary to select a restoration technique that can achieve the goal of forest restoration, taking the topography and environment of the target site into account. We also believe that in the future, accurate diagnosis and analysis of the vegetation will be necessary through a field survey of the forest fire-damaged sites.

Comparison of forest road status and policies between Korea and United States

  • Rhee, Hakjun;Choi, Sungmin;Lee, Joon-Woo;Kweon, Hyeong Keun
    • 농업과학연구
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    • 제44권4호
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    • pp.504-512
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    • 2017
  • Forest roads are essential for forest resource management. This study investigated and compared forest road and road policy data in Korea and the United States to improve future forest road policies in Korea. As compared to the United States (9.5 m/ha), Korea has much lower forest road density (3.19 m/ha) and has been actively constructing new forest roads. The Korea Forest Service leads forest road policy in Korea by providing subsidies for new road construction in non-national forests. The budget for forest roads accounted for 9.1% of the total Korea Forest Service budget in 2010 - 2015 and 73.5% of it was used for new road construction. Korean forest road policies have been distinctively changed over the past decades; e.g., an increase in forest road mileage in the 1990s, an increase in forest road standards in the 2000s, and an increase in the mileage of higher standard roads in the 2010s. In comparison to Korea, the United States has focused on road maintenance and road decommissioning since 2001. The budget for forest roads accounted for 2.9% of the total USDA Forest Service budget in 2011 - 2016 and 82.2% of it was used for operations and maintenance. Our study results suggest that forest road policies in Korea should start focusing on road maintenance and decommissioning, if needed.

Landsat-5 TM 위성의 영상자료를 이용한 강원대학교 연습림의 임상분석 (Estimating the Forest Cover Types on Experimental Forest of Kangwon National University using Landsat-5 TM data)

  • 우종춘;김한수;원현규
    • Journal of Forest and Environmental Science
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    • 제15권1호
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    • pp.65-70
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    • 1999
  • 본 연구는 강원대학교 연습림의 산림자원에 대한 효율적인 조사방법을 모색하기 위하여 Landsat-5 TM 위성의 영상자료를 이용하여 침엽수와 활엽수의 면적과 분포지역을 분석하였다. 그리고 위성자료 이용가능성, 위성판독 기술의 개발, 판독된 자료의 디지털 도변화 방법에 대하여 연구하고자 하였다. 분석도구로서 IMAGINE8.3와 ArcView3.0 소프트웨어를 사용하였다. 그 결과 연습림의 전체면적 3,058ha에서 활엽수는 2,224ha로서 연습림 면적에 약 73%를 차지하였고, 침엽수는 834ha로서 약 27%를 차지하였다.

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