• 대한원격탐사학회:학술대회논문집
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• 대한원격탐사학회 2003년도 Proceedings of ACRS 2003 ISRS
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• pp.1127-1127
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• 2003

• 농업과학연구
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• 제38권4호
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• pp.641-649
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• 2011

This study was to analyze the soil environmental characteristics and vegetation status of green roof in Daejeon Metropolitan City. The investigated floras of vascular plants are 17 families, 26 genera, 28 species in Seo-Gu Daejeon District Office Building (SG), 25 families, 49 genera, 56 species in Galma Public Library (GP), and 34 families, 57 genera, 60 species in Daejeon City Hall (DC) respectively. Although the larger area shows the more numbers of species in introduced plants and naturalized plant, the naturalized plant ratios were similar with each other. They were 10.71%, 10.71%, and 11.67% at SG, GP, and DC respectively. As a result of analysis on soil physical property, soil depths including vegetation soil and drainage soil of 3 green roofs were 30cm. The depths of vegetation soil at SG, GP, and DC were 0~8cm, 0~10cm, 0~10cm respectively. As a results of soil chemical properties of our study, soil pH of vegetation soil and drainage soil were a range of 6.42 and 7.43, and a range of 6.55 and 7.43 on the average respectively. Available-P contents of vegetation soil and drainage soil were a range of 153.33 and 366.33mg/kg, and a range of 136.67 and 242.67 mg/kg which is very high, respectively. Carbon contents in soil at vegetation soil and drainage soil were a range of 3.16 and 6.38%, and a range of 1.63 and 2.47% respectively. Carbon storage per square meter within 30 cm were 2.76 kg, 2.99 kg, and 3.66 kg at SG, GP, and DC respectively.

• Journal of the Korean Wood Science and Technology
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• 제31권6호
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• pp.60-66
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• 2003

Mycelial growth of L. edodes by supplement nutrition of softwood was studied on a sawdust medium. The sawdust used was from the following softwood species : Larix leptolepis, Pinus densiflora and Pinus koraiensis. The added nutritions consisted of carbon nutritions(sucrose, active carbon, xylose, glucose, paper pellet), nitrogen nutritions(potassium nitrate, ammonium chloride, asparagine, glutamic acid) and vegetable oil(rice bran oil). The sawdust medium was a mixture of 76% sawdust, 20% rice bran, 3% carbon nutrition, 0.4% nitrogen nutrition and 0.6% calcium carbonate. Following addition of carbon and nitrogen nutritions on the sawdust medium proved most suitable : L. leptolepis (glucose, glutamic acid), P. densiflora (active carbon, asparagine) and P. koraiensis (xylose, glutamic acid). The highest mycelial growth was obtained from sawdust medium of optimum condition with 97% of L. leptolepis, 110% of P. densiflora and 98% of P. koraiensis. This study has provided useful preliminary information for the cultivation of L. edodes.

• Current Research on Agriculture and Life Sciences
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• 제21권
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• pp.39-47
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• 2003

아까시나무 조림이 토양에 미치는 영향을 파악하기 위하여 아까시나무 조림지와 인접하고 있는 다른 임분의 토양 이화학적 성질을 비교, 분석하여 토양특성의 변화에 대해 조사하였다. 아까시나무 조림지와 인접 임분의 토성은 대부분 사양토와 양질 사토로 나타났다. 토양 pH, 유효인산의 함량, 탄소와 전질소의 함량이 아까시나무 조림지와 인접 임분사이에 차이가 있음을 확인할수 있었다. 아까시나무 조림지에서 토양 pH와 탄소의 함량은 참나무류림보다는 낮지만, 소나무류림보다는 높았으며, 유효인산과 질소의 함량은 아까시나무 조림지가 인접 임분보다 높게 나타났다. 각 임분들 사이에서는 토양 pH가 높은 통계적인 유의성을 보였으며, 탄소와 전질소함량에서도 통계적인 유의성이 있었다. 또한 토양 pH, 탄질률, CEC, 전질소함량 순으로 높은 상관관계를 보였다. 아까시나무가 인접하고 있는 참나무류림과 소나무류림에 침입하는 정도를 다르게 할 수 있다고 추론할 수 있었다.

• 한국산림과학회지
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• 제105권3호
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• pp.275-283
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• 2016

본 연구는 소나무림의 간벌에 따른 임분의 바이오매스 변화, 토양 $CO_2$ 발생량, 낙엽 및 뿌리의 분해율을 조사하여 연간 탄소 동태를 파악하고자 수행되었다. 8년생 소나무 묘포장에 대조구, 간벌지(50%), 개벌지를 각 3 방형구씩 조성하였고, 나지는 한 방형구를 조성하였다. 측정은 2012년 3월부터 2014년 2월까지 이뤄졌다. 연평균 근원직경 증가는 대조구 0.89 cm, 간벌지 1.48 cm로 대조구보다 간벌지에서 컸다(p<0.05). 연평균 순생산량은 대조구 $5.17kg\;C\;m^{-2}\;yr^{-1}$, 간벌지 $4.85kg\;C\;m^{-2}\;yr^{-1}$로 나타났다. 연간 토양 $CO_2$ 발생량은 대조구, 간벌지, 개벌지, 나지에서 각각 3.71, 3.90, 4.17, $4.56kg\;CO_2\;m^{-2}\;yr^{-1}$으로 식생의 제거는 토양 $CO_2$ 발생을 증가시켰다(P<0.05). 토양 $CO_2$ 발생은 토양온도와 양의 상관관계가 있으나 토양수분과는 뚜렷한 관계가 나타나지 않았다. 순생태계생산량(NEP)은 대조구 $1.57kg\;C\;m^{-2}\;yr^{-1}$, 간벌지 $1.36kg\;C\;m^{-2}\;yr^{-1}$, 개벌지 $-0.67kg\;C\;m^{-2}\;yr^{-1}$, 나지 $-1.25kg\;C\;m^{-2}\;yr^{-1}$으로, 식생 유무에 따른 차이를 나타냈다(P<0.05). 간벌은 임분 내 개체목의 근원직경과 탄소량을 증가시켰고, 1년 후 간벌재로 반출 된 탄소량의 86%를 회복했다. 또한 토양 $CO_2$ 발생량을 증가시켰고, 순생태계생산량을 증가시켰다. 소규모의 연구임에도 불구하고, 본 연구의 결과는 간벌에 의한 임분 밀도 조절이 소나무 유령림의 탄소저장량 증대와 생장에 있어 효과적임을 보여 주었다. 이는 우리나라에서 기후변화 완화를 위한 적극적인 소나무림의 경영이 필요함을 시사한다. 추후 실제 소나무림에서 영급별, 간벌 강도별, 지위별 등 다양한 변수를 고려한 장기적 연구가 수행되어야 할 것이다.

• 농업과학연구
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• 제37권1호
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• pp.45-52
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• 2010

This study has been carried out to estimate carbon contents in an average 40-years-old Pinus koraiensis plantations and an average 37-years-old Larix leptolepis plantations in Gongju, Chungnam Province. Average carbon concentration in stemwood, stembark, branches, needles, and root were 54.31% in Pinus koraiensis and 53.49% in Larix leptolepis stands. Carbon contents was estimated by the equation model logWt=A+BlogD where Wt is oven-dry weight in kg and D is DBH in cm. Total carbon contents was 103.38tC/ha in Pinus koraiensis stands and 96.59tC/ha in Larix leptolepis stands. Net primary carbon production was estimated at 8.79tC/ha/yr in Pinus koraiensis stands and 11.42tC/ha/yr in Larix leptolepis stands.

• Journal of the Korean Wood Science and Technology
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• 제48권4호
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• pp.503-512
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• 2020

Using Na₂CO₃ versus NaCl as chemical activator, we compared the quality of activated carbon produced from oil palm fronds as raw material. These activators were selected for comparison because both are readily available and are environmentally friendly. In the manufacturing, we used Indonesian National Standard (SNI 06-3730-1995) parameters. For the quality comparison, we determined activated-carbon yield, moisture, ash, volatiles, and fixed-carbon contents; and adsorption capacity of iodine. The best characteristics, assessed by morphological surface analysis and Fourier transform infrared (FTIR) spectral analysis, were observed in the carbon activated by Na₂CO₃ at an activator concentration of 10% and carbonization temperature of 400 ℃. The results were as follows: activated-carbon yield, 84%; water content, 8.80%; ash content, 2.20%; volatiles content, 14.80%; fixed-carbon content, 68.60%; and adsorption capacity of iodine, 888.51 mg/g. Identification using the FTIR spectrophotometer showed the presence of the functional groups O-H, C=O, C=C, C-C, and C-H in the Na₂CO₃-activated carbon.

• 한국산림과학회지
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• 제111권4호
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• pp.667-675
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• 2022

혼농임업(agroforestry)은 임업, 농업, 축산업을 병행하여 지속적인 농업을 가능케 하는 생태·경제적 토지이용 체계로, 임농복합경영은 혼농임업의 북한식 표현이다. 북한은 경사 산지 및 산림황폐지 복구를 위한 전략으로 임농복합경영을 선택하였다. 임농복합경영은 남북산림협력 분과회담의 의제로 제시된 바 있으며, 한반도 산림탄소흡수원을 확충하고 '2050 탄소중립 전략'과 '한반도 그린데탕트'를 추진하기 위한 수단으로 주목받고 있다. 본 연구는 북한 산림황폐지 상시 모니터링 지역이자 ICRAF(세계혼농임업센터) 혼합임농경영 시범지인 황해북도 수안군을 대상으로 하여 임농복합경영 대상지 적지 분석을 수행하였다. 문헌 분석을 통해 임농복합경영 대상지 입지조건을 분석하여 대상지 선정의 기준을 정하고, GIS 중첩분석을 응용하여 임농복합경영 적지 분석 지도를 제작하여 시각화하였다. 약 8,839 ha의 경사지가 임농복합경영에 적합한 지역으로 선정되었으며, 이는 수안군 전체 면적의 약 15%에 해당하였다. 본 연구에서 제작한 지도와 구글 어스 위성영상을 대조하여 육안판독을 통해 수안군의 임농복합경영 등 토지이용 현황을 확인하고 결과를 검증하였다. 본 연구는 향후 자연환경적인자와 사회경제적인자에 대한 고찰을 통해 인자 간 상대적 중요도를 평가하고, 전국적 단위에서 정확도 높은 임농복합경영 적지 분석 지도를 제작하여 남북산림협력 정책의 기초자료를 제작하는데 기여할 것이다.

• 한국가구학회지
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• 제29권1호
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• pp.40-48
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• 2018

This study analyzes the contribution of hanok that construction in reducing greenhouse gas (GHG) emissions in Korea by calculating the carbon storage of hanoks and comparing it to different housing types in Korea. The hanok is a traditional Korean house. And it were first designed and built in the $14^{th}$ century during thd Joseon Dynasty. According to our results, the number of hanoks in 2016 was approximately 547,085 which was accounting for 7.8% of the total construction market, This study found Gyeongbuk with 95,083, Jeonnam with 88,981, Gyeongnam with 76,388 and Seoul with 43,519 hanoks. According to the GHG Inventory Report for 2016, Korea's total annual GHG emissions amounted to 650 million $tCO_2$, with the carbon stocks in hanoks amounting to 19.2 million $tCO_2$. This accounts for 2.8% of Korea's total GHG emissions and 46.1% of the carbon absorbed by forests. Our results show that hanoks store four times more carbon than light-frame-wood-houses, and 15 times more carbon than concrete-reinforced and steel-frame houses. The main factors causing the hanok industry slowdown are the high construction costs, lack of government support, and insufficient knowledge of hanok architecture. Therefore, to further increase the carbon stock of hanok, more research is needed to improve the technical use of wood and reduce construction of the hanok and prepare legal and institutional arrangements related to hanok industry.

• Plant Resources
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• 제2권1호
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• pp.42-48
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• 1999

This study was undertaken to examine the feasibility of black locust (Robinia pseudoacacia) as substrates for several edible mushrooms. For the cultivation of several edible and/or medicinal fungi on black locust, optimum bulk densities, synthetic or semisynthetic additives, natural additives and pretreatment methods were investigated. Fruit body yields of the fungi on various sawdust media composed of different wood species were also analyzed for testing the capability of black locust as a substrate for mushroom production. Mycelial growths decreased proportional when the bulk density increased. The most suitable carbon and nitrogen sources as additives to promote the mycelial growth were sucrose (2%, w/w) and ammonium phosphate (0.2%, w/w) respectively. When corn-powder and beer-waste as natural additives were added to sawdust of black locust showed the significant growth of mycelia. And the optimum mixing ratio was 10:2:1 (sawdust: corn-powder: beer-waste, w/w). Black locust after cold water treatment showed the outstanding mycelial growths. Any significant changes of pH, moisture content (%) and dry-weight losses (%) could not be found among culture substrates (sawdust of black locust, oak and poplar wood) examined before and after harvesting of fruit bodies. Yield of fruit bodies on black locust culture media were comparable with those culture media composed with oak and poplar wood. The present work indicated strongly the potentiality of black locust as raw materials for edible and medicinal mushrooms.