• Journal of the Korean Wood Science and Technology
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• 제31권6호
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• pp.40-44
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• 2003

This study was carried out to investigate the antioxidant activities of domestic trees grown in Korea. Based on 1,1-diphenyl-2-picrylhydrazyl (DPPH) radical scavenging activity method, the methanolic extracts of 23 species were screened in order to search for natural antioxidants. Among these species, Acer ginnala, Cotinus coggygria, Acanthopanax koreanum, Thea sinensis and Pinus densiflora showed stronger antioxidative activity comparing with reference compound, ascorbic acid.

• 한국가구학회지
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• 제15권1호
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• pp.1-7
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• 2004

Domestic oak trees of Quercus variabilis and Quercus serrata were harvested from several forest sites and their green moisture contents, green specific gravities and fiber lengths were compared. The green specific gravities of Quercus serrata trees showed differences between the forest sites at 5% significance level while those of Quercus variabilis didn't. In the radial direction the green specific gravities of Quercus variabilis gradually increased from pith to bark. There was no discrepancy of the green specific gravities between the sapwood and heartwood of Quercus variabilis. And no difference of fiber length was found between individual trees and tree heights for both species.

• 한국가구학회지
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• 제11권2호
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• pp.37-43
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• 2000

Ginkgo trees have long been planted in Korea as roadside trees and ornamental trees, but the wood was seldom used except some utilization f3r small artifacts. Soaring prices of imported wood and future uncertainty about long-term supply of foreign woods have stimulated research on value-added utilization of less-utilized domestic wood resources such as Ginkgo wood. The processing properties of Ginkgo wood were investigated to determine its utilization potential in this study, and the results of treatability, drying characteristics, gluability, paintability, bending properties, chemical discoloration characteristics were presented.

• 한국가구학회지
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• 제11권1호
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• pp.75-84
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• 2000

Ginkgo trees have long been planted in Korea as roadside trees and ornamental trees, but the wood was seldom used except some utilization for small artifacts. Soaring prices of imported wood and future uncertainty about long-term supply of foreign woods have stimulated research on value-added utilization of less-utilized domestic wood resources such as Ginkgo wood. The properties of Ginkgo wood were investigated to determine its utilization potential in this study, and the results of anatomical, physical, and mechanical studies were presented with chemical compositions.

• 한국정보통신학회:학술대회논문집
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• 한국정보통신학회 2014년도 춘계학술대회
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• pp.384-386
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• 2014

군 지형분석지도의 속성데이터 타입은 DIGEST의 FACC를 사용하고 있어 다른 타입의 속성데이터를 사용하고 있는 국내 주제도를 활용하는 것은 한계점이 있다. 그러나 군 현장에서는 국내의 주제도를 활용하고자 하는 시도들이 있지만 연구가 충분치 않다. 그래서 군 지형분석지도 제작에 필요한 속성 데이터와 국내 주제도와 속성을 매칭을 하여 정의하였고 FM 5-33에 정의된 야지기동로 분석방법에 따라 분석을 하였다. 그러나 지형분석지도 중 식생도에서 수목의 종류에 대한 데이터는 있지만 수목의 직경은 없었다. 수목의 직경은 군 (궤도)차량들이 일정한 직경까지 극복할 수 있기 때문에 분석 시 필요한 요소이다. 본 논문에서는 1:5000 임상도의 수목의 영급을 활용하여 임분수확표에 있는 일부 수목의 직경과 이외의 수목 직경은 경급을 활용하여 수목의 직경을 산정하는데 중점적을 두고 연구를 수행하였다.

• 한국조경학회지
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• 제25권1호
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• pp.47-61
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• 1997

This study was conducted to grasp the present condition of the name and the related text of the domestic laws (97 statutes, 1 examination, 1 guide, 3 ordinances, 1 leading case) in force which were connected with landscape plant and planting. Examining the general tree-planting system of America, the related foreign laws(1 constitution, 44 statutes, 31 ordinances, 6 leading cases) were arranged in the name and the text and classified by nations of regional groups and it was considered to the mutual relation with lots of laws which are scattered with the various laws. To examine the points at issue of the related domestic laws and to study the related foreign laws, the remedies for the domestic laws being at issue were proposed. That is : A change of the landscape planting concept, the introduction of the landscape planting cost compared with the total construction cost, the unification of the landscape planting ordinances as the unit of city, the clarification of the completion period for the depect of the replaced trees. putting the conservation and production of the top soil under an obligation the adoption of a licence system for the tree planting within the river area, the introduction of the allotment system for landscape architectural expenses, the encouragement of making a hedge, the settlement for the problems of the trees loss compensation, the necessity for the quality test to the landscape planting works, the intensification of the punitive rules to the illegal felling and planting of the trees in the greenzone area, the application of the Labor Standard Act to the landscape planting laborers. The laws relating to landscape plant and planting are prescribed dispersedly in the many other related laws and it is concluded to be impossible for the legislation of the singular law which is applied uniformly to the department of the tree-planting. Hereafter it should be required to analyze concretely in detail the each text of the related laws by means of the joint studies between the professional landscape architects and the lawyers.

• 한국조경학회지
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• 제52권3호
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• pp.59-75
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• 2024

본 연구는 국내·외 가로수 조성 및 관리체계를 살펴보고자 한국-서울, 미국-레버넌시, 일본-요코하마시 그리고 프랑스-파리시를 대상으로 가로수의 계획, 조성 및 관리의 단계별로 살펴보았다. 국가별로 국정운영체계 그리고 문화적 차이에 따라 가로수의 업무 체계 및 인식이 상이했으나, 참고할만한 각각의 주요한 차이점과 특징을 살펴볼 수 있었다. 한국은 상대적으로 정성적인 기준을 설정해둔 점을 고려하며, 실제 업무수행에 있어서 객관성이 다소 결여될 가능성이 우려된다. 해외의 경우 다양한 방식으로 조성 및 관리 기준을 준수하도록 장치를 해 두었는데, 이는 업무효율에도 긍정적인 효과를 불러일으킬 것이기에 국내에서도 참고할 필요가 있다고 판단된다. 한국의 가로수 관련 업무 전반에 걸친 개선을 위해 매뉴얼의 법정지위 부여, 위원회의 권한 확대 그리고 국제협력 등을 시사하는 바이다. 본 연구는 사회의 변화와 필요성에 따라 개정 및 신설이 이뤄지는 법률, 체계 및 기준 등을 다뤘으므로 지속적인 연구가 이뤄질 필요가 있다고 사료된다.

• Journal of Forest and Environmental Science
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• 제32권4호
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• pp.392-399
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• 2016

This review paper presents guidelines which stakeholders use in addressing on-farm tree planting configuration, establishment, tending, silvi- cultural management, management of pests and diseases, challenges and opportunities as practiced in the medium to high potential areas of Kenya. The tree planting configurations discussed includes blocks planting (woodlot), boundary, compound planting, home/fruit gardens, trees intercropped or mixed with pasture, trees on riverbanks and roadside. Participatory monitoring and evaluation techniques have been highlighted. The main challenges facing tree planting activities include culture and attitude of local people, land and tree tenure, inadequate technical support, lack of recognition and integration of technical information and indigenous knowledge, capital and labour shortages, lack of appropriate incentives measures, damage by domestic and wild animals, conflict over trees on the boundary and policy and legal issues. This guideline targets forest managers, extension agents, students and other practitioners in policy and day to day decision making processes in Kenya.

• Journal of the Korean Wood Science and Technology
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• 제31권6호
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• pp.22-30
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• 2003

This study was performed to obtain the basic data for high quality timber production and efficient utilization by investigating the effect of pruning on timber quality of domestic plantation-grown Korean pine (Pinus koraiensis Sieb. et Zucc.). The results were summarized as follows:Dead knots (unsound knots) in the pruned logs occurred more at upper parts when compared with in non-pruned ones. The numbers of knots on surface in heavily pruned trees were less than those in non-pruned trees, but there was no significant difference in moderately pruned trees. The required period to reveal clear timber surface without defects after pruning increased proportionally with the increase of knot diameter. The yield of clear lumber production increased by about 10% after 14 years from moderate pruning. The quality grade of log improved with more pruning practices. Knots appeared the most important factor in lowering the log grades.

• 한국환경농학회지
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• 제42권4호
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• pp.297-310
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• 2023

M.7 rootstock is moderately resistant to fire blight. However, M.7 is generally too vigorous for high-density apple systems, but it can be grafted onto cultivars that exhibit weak tree growth, such as 'Sansa'. This study investigated the vegetative growth, yield, and fruit quality of 'Sansa' apple trees grafted on M.7 or M.9 rootstocks to assess the feasibility of establishing domestic high-density apple systems using M.7 and to determine the optimum exposure length for rootstocks. Trees were planted with exposed rootstock lengths of 5, 10, and 15 cm. The vegetative growth of apple trees grafted onto M.7 was greater than that of M.9 and vegetative growth tended to decrease as the exposed length of rootstock increased. However, the differences in yield per tree, average weights, soluble solids contents, and titratable acidity due to the rootstock and its exposure length varied. The accumulated yield over a 10 year period and the yield efficiency of M.7 were lower than that of M.9 and the yield efficiency tended to decrease as the exposed length of rootstock increased. When apple trees were grafted onto M.9, biennial bearing and tree vigor weakening occurred if the exposed length of the rootstock was over 10 cm. Conversely, when apple trees were grafted onto M.7, vegetative growth was excessive if the exposed length of rootstock was below 10 cm. Based on the results from this study, the optimum M.7 and M.9 exposure lengths for 'Sansa' were 15 cm and 5 cm, respectively.