• Journal of the Korean Wood Science and Technology
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• 제33권5호통권133호
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• pp.86-91
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• 2005

Six compounds were isolated from the EtOAc and $Et_2O$ fractions of the bark of Rhus chinensis by repeated column chromatography with $SiO_2$ and Sephadex LH-20. The structures were determined by instrumental analysis using MS and NMR spectrophotometer as: gallic acid (1), methyl gallate (2), 6, 7-dimethoxycoumarin (3), orcinol-${\beta}$-D-glucoside (4), scopoletin (5), semialactone (6). Among these compounds, 6,7-dimethoxycoumarin (3) was isolated from this plant for the first time. To measure the antioxidant activity, the DPPH radical scavenging activity test was performed. Gallic acid (1) showed the strongest activity, while orcinol-${\beta}$-D-glucoside (4), semialactone (5) and scopoletin (6) had the low activities.

• 한국방재학회:학술대회논문집
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• 한국방재학회 2007년도 정기총회 및 학술발표대회
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• pp.223-230
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• 2007

Nowaday, for the promotion of producing forest trees, production of excellent timbers, and build-up of public forest area, it is on the increase of the thinning-forest for artificial forest, natural forest, eco-friendly forest, and the forest for development and improvement of forest resources nationwide. Even though the thinning-forest is applied around 180,000ha every year, the quantity of collected/used products is only 18,000ha $(240,000m^3)$ which is 10% of the whole thinning-forest area. Meanwhile, some reports represent that the left products after thinning-forest might increase the severity of forest fire and the waste of resources. Therefore, this study focused on the analysis of correlation between the accumulated products after thinning-forest and forest fire, and providing a preparation plan for the forest fire.

• 농업과학연구
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• 제51권1호
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• pp.9-23
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• 2024

This study investigates the physiological and psychological effects of a nature-based outdoor activity program in an environment reflecting the characteristics of forest and coastal areas on 30 firefighters (average age: 40.4 ± 9.8 years) who are frequently exposed to dangerous situations. Blood pressure, pulse pressure, and heart rate variability were used as physiological measurement indicators, and the Korean versions of PANAS (positive affect and negative affect schedule), WEMWBS (Warwick-Edinburgh mental well-being scale), and PRS (perceived restorativeness scale) were used as psychological measurement indicators. For four days and three nights, the participants experienced programs at Hallyeohaesang Nature Center and the surrounding mountains, seas, and islands, utilizing forest resources such as trekking on forest trails, walking barefoot, taking aromatic footbaths, meditating in forest oxygen domes, and lying on relaxation chairs, and programs utilizing marine resources such as taking a boat to an island, walking on forest trails with seascape views, and sailing on a yacht. Participants' systolic blood pressure and pulse pressure decreased, and participants' positive emotions increased and negative emotions decreased after the program. There was a statistically significant increase in mental well-being and perceived restorative environment. Through this study, it was found that nature-based outdoor activity programs based on forest and marine resources are effective in physiological and psychological stability of firefighters. It is hoped that the results of this study will be applied to other high-risk workers for PTSD, who have high stress levels, by combining forest healing and marine healing, and expanding the scope and diversity of programs in more diverse environments and conditions.

• 한국식물생명공학회:학술대회논문집
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• 한국식물생명공학회 2003년도 추계학술대회 발표논문 초록집
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• pp.173-173
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• 2003

• 한국식물생명공학회:학술대회논문집
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• 한국식물생명공학회 2003년도 추계학술대회 발표논문 초록집
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• pp.148-148
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• 2003

• 한국식물생명공학회:학술대회논문집
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• 한국식물생명공학회 2004년도 생명공학 실용화를 위한 비젼
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• pp.202-202
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• 2004

• 한국식물생명공학회:학술대회논문집
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• 한국식물생명공학회 2005년도 추계학술대회 및 한일 식물생명공학 심포지엄
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• pp.304-304
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• 2005

• 한국환경복원기술학회지
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• 제26권3호
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• pp.19-28
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• 2023

The purpose of this study is to estimate carbon dioxide emissions from soil microbial respiration by forest type of Sobaeksan National Park. As a result of estimating the annual soil microbiological respiration volume by forest type in Sobaeksan National Park, broad-leaved forests, coniferous forest, artificial forests were similar to around 19.5 CO₂-ton/ha/yr. In the case of coniferous forests in sub-alpine and grassland near Birobong Peak, 12.2 CO₂-ton/ha/yr and 8.1 CO₂-ton/ha/yr, respectively, were lower than general forest areas. And as a result of analyzing the changes in soil microbiological respiration rate according to forest type in Sobaeksan National Park, the soil microbiological respiration rate in coniferous forests, broad-leaved forests, artificial forests, and sub-alpine areas was the highest in the July survey in summer and the lowest in November in late autumn. The change in soil microbial respiratory volume according to the measurement time in Sobaeksan National Park was the highest between 12:00 and 16:00, when the soil temperature was generally the highest among the days. It is known that the soil temperature is relatively low and the amount of soil microbial respiration decreases during winter, and the change in respiratory volume over the measurement time during the day was the smallest in November, when the amount of soil microbial respiration was relatively smaller than the May-September survey. However, this study has limitations in revealing the causal relationship of various environmental factors that affect the soil microbial respiration. Therefore, it is suggested that long-term research and investigation of various factors affecting soil respiration are needed to understand the carbon cycle of forest ecosystems.

• 생태와환경
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• 제46권3호
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• pp.460-470
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• 2013

덕유산 국립공원내 적상산 일대의 산지삼림식생은 전체 111개 군락이 조사되었으며, 산지낙엽활엽수림, 산지 습성림, 침엽수림, 식재림, 기타식생으로 암벽식생, 농경지 등이 조사되었다. 상관대분류에 의하여 구분된 각각의 산지삼림식생을 보면 산지낙엽활엽수림은 36개 군락으로서 대부분은 신갈나무, 굴참나무, 졸참나무군락 및 이들 종과 혼생림을 이루고 있다. 26개 군락의 산지습성림은 들메나무군락, 층층나무군락, 들메나무-층층나무군락, 층층나무-들메나무군락이 65.50% 차지하고 있어 적상산 일대 산지 계곡은 대부분이 들메나무와 층층나무에 의하여 강하게 우점되어 있음을 알 수 있다. 10개 군락의 침엽수림은 소나무군락이 63.27%로 소나무-굴참나무군락, 소나무-신갈나무군락의 14.81%, 12.23% 보다 분포 면적 비율이 높아 적상산 일대 침엽수림은 대부분이 소나무군락이 분포하고 있음을 알 수 있다. 그러나 소나무군락을 제외한 소나무-신갈나무군락과 소나무-굴참나무군락의 침엽수림대 혼효림은 천이가 진행되면 신갈나무군락으로 군락 대체가 예상되어 이 지역 일대 침엽수림의 분포 면적은 감소 할 것으로 보인다. 한편 적상산 일대의 식재림은 31개 군락이 조사되었으며 적상산 사면 저지대의 마을, 경작지, 도로와 연접된 부분에 리기다소나무, 일본잎갈나무 등이 비교적 넓은 면적에 조림되어 있어 천이의 진행과 함께 참나무속 수종으로 매우 빠르게 군락이 대체될 것으로 보인다. 결론적으로 적상산 일대의 산림식생은 신갈나무, 굴참나무, 소나무, 들메나무, 층층나무와 이들 종들과 혼생군락을 이루고 있는 군락들이 주요 군락을 형성하고 있으며, 천이 및 기후적 요인들에 의하여 산지낙엽활엽수림은 신갈나무, 산지습성림은 들메나무와 층층나무군락으로 천이가 진행 될 것으로 보인다.

• 한국산림과학회지
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• 제31권1호
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• pp.91-92
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• 1976