• Journal of Forest and Environmental Science
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• 제39권4호
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• pp.254-260
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• 2023

A sensor system has been developed that uses an ultrasonic sensor to detect the downhill slope on the side of a forest road and prevents a vehicle-type forest machine from rolling down a mountainside. A specular reflection of ultrasonic wave might cause severe issues in measuring distances to targets. By investigating the installation angle of the sensor to minimize the negative effects of specular reflection, the installation angle of lateral monitoring ultrasonic sensor could be determined based on the width of road shoulder. Obstacles such as small rocks or piece of log in a forest road may cause the forest machine to be overturned while the machine riding over due to excessive its posture change. It was determined that the laser sensor could be a part of a sensor system capable of specifying the location and size of small obstacles. Not only this sensor system including ultrasonic and laser sensors can issue a warning of dangerous sections to drivers in forest forwarders currently in use, but also it can be used as a driving safety sensor in autonomous forest machine or remote-control forest machine in the future.

• 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.

• Journal of Forest and Environmental Science
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• 제22권1호
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• pp.66-70
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• 2006

큰쌀도적 (Coleoptera : Trogossitidae) 성충과 유충의 형태적 특징을 관찰하고, 분포와 생물학적 특징을 기술하였다.

• 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.

• 한국식물생명공학회:학술대회논문집
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• 한국식물생명공학회 2003년도 추계학술대회 발표논문 초록집
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• pp.174-174
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• 2003

• 한국식물생명공학회:학술대회논문집
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• 한국식물생명공학회 2004년도 춘계학술대회
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• pp.69-69
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• 2004

• 한국농림기상학회:학술대회논문집
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• 한국농림기상학회 2019년도 하계 학술발표초록집
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• pp.272-272
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• 2019

• 한국농림기상학회:학술대회논문집
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• 한국농림기상학회 2018년도 하계 학술발표초록집
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• pp.21-38
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• 2018

• 한국산림과학회지
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• 제98권4호
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• pp.479-490
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• 2009

본 연구는 다양한 국유림 제도 가운데에서도 2004년도부터 도입된 다자참여가 가능한 산림경영대행제도, 공동산림사업, 국민의숲 제도에 대해 실태를 파악함과 동시에 활성화 방안을 모색하고자 수행하였다. 조사대상은 5개 지방산림청과 27개 국유림관리소 업무담당자를 대상으로 의식조사를 실시하였으며, 제도에 대한 문제점 및 업무 추진에 있어서 중요도와 만족도를 도출하여 활성화 방안을 제언하였다. 그 결과, 국유림 경영제도에 대한 업무의 중요 정도 인식은 협약실적에 따라 그 중요성을 다소 달리 해석하고 있는 것으로 나타났으며, 산림경영대행제도에 대한 가장 큰 문제점으로는 해당 대상자의 참여 의지 부족(4.13), 공동산림사업 제도에서는 참여자의 수익보장에 대한 한계성(3.69), 국민의숲 제도에서는 참여자의 참여투자 의지 부족(3.90)요인을 지적하였다. 국유림 경영제도에 대한 중요도와 만족도를 조사한 결과, I사면(현 상태 지속적 유지관리)은 5개요인(의사결정자의 업무추진 의지 외), II사면(최우선 투자와 관리)은 2개 요인(참여기회 및 범위확대 외), III사면(현시점에서 고려 대상이 아님)은 6개요인(협약 종료 후 사후관리 규정 마련 외), IV사면(지원 투입자체가 요구됨)은 2개 요인(신규제도 도입에 따른 업무부담 해소 외)으로 분석되었다. 국유림 경영제도의 활성화 방안으로서 국유림 경영제도에 대한 규정의 개선, 민자사업의 유도 등 사업대상자 및 범위 확대, 국유림경영제도를 전담할 수 있는 비정부 전문기관의 설립을 제안하였다.

• 신재생에너지
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• 제18권3호
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• pp.1-9
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• 2022

This study analyzed the anticipated supply-and-demand of forest biomass energy (through wood pellets) until 2050, in South Korea. Comparing the utilization rates of forest resources of five countries (United Kingdom, Germany, Finland, Japan, and S. Korea), it was found that S. Korea does not nearly utilize its forest resources for energy purposes. The total demand for wood pellets in S. Korea (based on a power generation efficiency of 38%) was predicted to be 3,629 and 4,371 thousand tons in 2034 and 2050, respectively. The anticipated total wood pellet power generation ratio to target power consumption is 1.13% (5,745 GWh), 1.17% (6,336 GWh), and 1.25% (7,631 GWh) in 2020, 2030, and 2050, respectively. Low value-added forest residues left unattended in forests are called "Unused Forest Biomass" in S. Korea. From the analysis, the total annual potential amount of raw material, sustainably collectible amount, and available amount of wood pellet in 2050 were estimated to be 6,877, 4,814, and 3,370 thousand tons, respectively. The rate of contribution to Nationally Determined Contributions was up to 0.64%. Through this study, the authors found that forest biomass energy will contribute to a carbon neutral society in the near future at the national level.