• 한국양묘협회지
• /
• s.14
• /
• pp.22-29
• /
• 1986

느티나무는 우리나라 전국에 조림 가능한 향토수종으로 앞으로 산림의 다목적 기능에 부응하기 위하여 시대적으로 많은 조림이 요구되는 수종이다. 느티나무는 심근성이며 내음성은 강하나 건조에 약하여 조림적지는 입지에 대한 요구도가 높기 때문에 계곡, 산록, 마을주변의 배수가 잘되고 통기성이 양호한 곳에 식재하여야 한다. 유시생장이 신속한 속성 활엽수로써 용도가 다양한 고급용재 조림수종이다.

• Korean Journal of Environment and Ecology
• /
• v.17 no.3
• /
• pp.224-231
• /
• 2003

To develope reforestation methods for environmentally sound and ecological forest management, stand structure and radial growth of the trees were investigated and compared by species and study sites. Plantation forest studied on Betula costata, Betula platyphylla var. japonica and Betula davurica, was located at Jawoon-ni Nae-myeun, Hongcheon-gun and natural forest studied on Betula costata, was located at Jangjeon-ni Jinbu-myeun, Pyeungchang-gun. In 12.3 years after planting, differences of annual diameter increment among three Betula species were significant. The highest mean annual diameter increments, 7.67mm was measured in planting Betula costata, and followed by planting Betula platyphylla var. japonica and Betula davurica, and the lowest values. 4.32mm did in natural Betula costata. If planting Genus Beula in this district. Betula costata might be the best species. From these facts, massive planting of three Betula species in this district might have much problems, but might be evaluated as proper trial.

• Journal of Korean Society of Forest Science
• /
• v.109 no.2
• /
• pp.179-188
• /
• 2020

Weeding refers to the process of removing weeds around crop trees, which cause competition in nutrients, moisture, and light, and has a great effect on the early growth and survival of crop trees for establishing forest resources. This study was conducted to find out the timing and method of weeding that is the most suitable for the major afforestation species in national forests. We investigated (1) weeding time and frequency for each afforestation species and (2) the height of crop trees and the length of weeds. Up to 99% weeding operation was carried out until 5 years following afforestation. Pinus densiflora, Larix kaempferi, Chamaecyparis obtusa, Prunus sargentii, and Betula platyphylla plantations accounted for more than 70% of the total weeding sites. Once-a-year weeding process was conducted from late June to late July (67%), and twice-a-year weeding process was the highest in June-August by 31%. Most species were shorter than the weeds until the first and second year of planting, but the height of the crop trees was higher than that of the weeds by 48% in average from the third year. Therefore, from the third year of afforestation, except for some species, it is possible to reduce the cost of weeding operations while reducing nutrient competition by the weeds through the removal of weed sprouts, mainly woody weeds, rather than clear cutting. This study contributes to efficiently develop forest resource establishment while reducing operational costs through a detailed weeding schedule and species-specific method.

• Korean Journal of Environment and Ecology
• /
• v.17 no.2
• /
• pp.105-111
• /
• 2003

To develope reforestation methods for enviromentally sound and ecological forest management, Fraxinus rhynchophylla stand structure and radial growth of the trees were invstigated and compared by study sites. Plantation forest studied on Fraxinus rhynchophylla, was located at Jawoon-ni Nae-myeun, Hongcheon-gun and natural forest studied on Fraxinus rhynchophylla, was located at Jangjeon-ni Jinbu-myeun, Pyeungchang-gun. In 7,8 years after planting, differences of annual diameter increment among three stand origins were significant. The highest mean annual diameter increments of F. rhynchophylla, 4.60 mm/year was measured in sprouting trees, and followed by natural seedlings 4.59 mm/year. The lowest values, 4.18mm/year did in planting trees. Early radial growth of planting F. rhynchophylla was measured lower than that of sprouting or natural seedlings. These facts mean that planting F. rhynchophylla is not proper regeneration methods. Other regeneration methods of F. rhynchophylla forest, by sproutings, direct seeding and natural seeding, might be researched and recommended.

• Korean Journal of Environment and Ecology
• /
• v.17 no.4
• /
• pp.309-315
• /
• 2004

To estimate planting results of deciduous broad-leaved species, forest structure and radial growth of the trees were investigated and compared by species and studied sites. Plantation forest studied on Juglans mandshurica, was located at Jawoon-ni Nae-myeun, Hongcheon-gun and natural forest studied on Juglans mandshurica, was located at Jangjeon-ni Jinbu-myeun, Pyeungchang-gun. In 9 years after planting, differences of annual diameter increment among three stand origins were significant. The highest mean annual diameter increments of J. mandshurica, 7.31mm/year was measured in natural seedlings, and followed by sprouting trees 6.93mm/year. The lowest values, 5.28mm/year did in planting trees. Early radial growth of planting J. mandshurica was measured lower than that of sprouting or natural seedlings. These facts means that planting J. mandshurica is not proper regeneration methods. Other regeneration methods of J mondshurica forest, by sproutings, direct seeding and natural seeding, might be researched and recommended.

• KSCE Journal of Civil and Environmental Engineering Research
• /
• v.35 no.4
• /
• pp.1007-1013
• /
• 2015

Desertification in China, one of the source regions of yellow dust, has been worsen by industrialization and extreme land development, which increases the damage caused by yellow dust in Korea. Because the yellow dust from China affects not only their own country, but also neighboring countries, it is becoming an international problem, and China has been started afforestation projects to prevent excessive desertification with the help of the international community. However, it is only possible for identifying the results of afforestation projects to check afforestation result reports from National Bureau of Statistics of China, which makes it difficult to check out tangible results. Therefore, this study was conducted by using remote sensing technique for monitoring afforestation status of Yulin, shaanxi, China. in which an afforestation project has been carried out steadily. MODIS imagery was used as remote sensing data and it was confirmed that vegetation has been increased through vegetation indices from 2000 to 2014 and afforestation areas were estimated as same trend of ground reference data.

• 한국양묘협회지
• /
• s.26
• /
• pp.7-10
• /
• 1998

• 산림경영
• /
• s.25
• /
• pp.10-13
• /
• 1988

• Journal of Korean Society of Forest Science
• /
• v.96 no.3
• /
• pp.348-356
• /
• 2007

The purpose of this study is to give the results of economic feasibility of industrial forest plantations, and also A/R CDM project in Indonesia to investors. In order to analyze economic feasibility of the industrial forest plantation and A/R CDM project, this study comparatively analyzes the feasibility based on three following scenarios: industrial plantation type; A/R CDM type; combination type of industrial plantation and A/R CDM project. In the aspect of IRR, the combination type has 11 % while the industrial plantation type has 8%. If the price of timber increases USD $5/m^3$ (from the standard price: USD $30/m^3$ to USD $35/m^3$), IRR of the industrial plantation type will increase from 8% to 14%. This result shows us that the IRR of the industrial plantation type is very sensitive to the price of timber. There is no economic feasibility of A/R CDM project if the price of lCER is under USD 5. In addition, IRR of the A/R CDM project type is the same to IRR of industrial plantation type (8%) when the price of lCER is USD 10. Finally, the total investment expenditure on 12,000ha of the combination type is approximately 13 billion won while the industrial plantation type is 13.6 billion won. It takes 11 year to reach the turning point in terms of profitability of the combination type while the industrial plantation takes 13 year. Thus, the economic feasibility of the combination type is higher than the other types(industrial plantation type and A/R CDM project type).

• Landscaping Tree
• /
• s.119
• /
• pp.8-11
• /
• 2010

국가 발전과 국민생활수준 향상으로 조경수를 이용한 경관조림이 생태공원, 도시숲, 학교숲. 거리숲 등의 이름으로 확대되어가는 현상을 보게 된다. 경관조림지를 보면서 행정가의 눈에 의한 행정적 조림, 작업원의 눈에 의한 사업적 조림은 있으나 전문가에 의한 경관조림기술이 부족하다는 것을 느끼곤 하였다. 수많은 조경수들 중에서 본연의 형태와 생태적 요구 특성에 알맞고, 입지특성 및 지역의 문화사회적 특성을 고려한 수종을 선택하고 배치하는 일은 물론 쉬운 일은 아닐 것이다. 그러나 경관조성과 관리사업에 대한 사회적 수요는 지속적으로 늘어날 전망이고, 경관의 질도 향상시켜 나감은 물론 경관조성사업의 투자 효율도 증대시키는 측면에서 조경수 배치 설계사 양성의 필요성을 제안해 보고자 한다.