• Korean Journal of Environment and Ecology
• /
• v.35 no.4
• /
• pp.424-434
• /
• 2021

People who face retirement in aging society experience changes in resilience and psychological depression. As the baby boomer generation, which has played a central role in Korea's economic and social sectors, begins retiring, interest in their post-retirement lives has also increased. Thus, this study investigates the effects of a forest healing program using forest healing factors of ecological forests on the resilience and depression of baby-boomer retirees. This experiment divided 58 subjects in the baby boomer generation into three groups and examined differences among the groups. The result showed that the subjects in the forest healing program group (FHPG) had a very significant increase in resilience and a statistically significant decrease in depression compared to those in the forest healing program non-participation group (FHNG) and the daily life group (DLG). Therefore, it can be said participating in the forest healing program is more effective for retirees than voluntary forest activities. The results of this study can be used as basic data for research on the resilience and depression of retirees.

• Journal of Korean Society of Forest Science
• /
• v.32 no.1
• /
• pp.9-15
• /
• 1976

Financial rotations of Pinus koraiensis stands are calculated and compared on the basis of five basic financial maturity concepts. The rotations given by the forest rent and average annual gross revenue models are in excess of sixty years by adopting zero interest rates of capital and forest lands. IRR model also neglects land value and highly sensitive to the changes of fixed and regeneration costs. The Faustmann doctrine recommands rotation ages of 23-39 years depend upon applied interest rates and site indices, and seems to be most adequate for determining financial maturity. It is however the situation in Korea that economic conditions are changing rapidly, and thus a model which does not require many exogenous variables in calculation process is preferable. The Duerr's solution has a basic simplicity and logic which is appealing from both a theoritical and practical viewpoint, and most adaptable to the Korean situation, even though the model completly neglects the opportunity cost for forest land. There is a tendency to reduce rotation length with the increase of site quality, but the difference is negligible.

• Korean Journal of Plant Resources
• /
• v.36 no.1
• /
• pp.91-99
• /
• 2023

Plus tree selection is the essential first step in a tree improvement program. This study was carried out to select plus trees of black locust (Robinia pseudoacacia L.) for tree improvement in Korea. The candidate plus trees of black locust were selected from twenty-one places in the four provinces (Gangwon, Gyeonggi, Chungcheong and Gyeongsang) following comparison selection. The trees were examined for qualitative and quantitative traits of economic interest like tree height (H), diameter at breast height (DBH), clear bole height (CBH), stem straightness (SS), crown size (CS) and disease resistance. The 64 selected trees showed higher quality in growth characteristics than control trees. Average of height, DBH, CBH, SS and CS were 20.5 m, 31.1 cm, 10.1 m, 1.2 and 5.2 m respectively. In particular, it was shown that the growth characteristics were higher in Chungcheong population. The superiority percentage of selected candidate plus trees of black locust over their respective check trees ranged from 7.3% to 18.9% in height, 20.0% to 40.6% in DBH, 32.8% to 73.5% in CBH, 42.9% to 55.2% in SS and -11.1% to 9.4% in CS, respectively. The selected black locust will be useful in future tree breeding programs based on their clonal and progeny performance.

• Journal of Korean Society of Forest Science
• /
• v.95 no.4
• /
• pp.468-475
• /
• 2006

This study examined the economic effects of low tree-form culture, Cost-Benefit analysis was done based on additional costs and benefits from investment in low tree-form culture. In addition, this study analysed the sensitivity of profitability due to the changes in chestnut prices and wages. Investment in low tree-form culture was analysed to be profitable in Chungju, Gongju and Buyeo areas but in Jinju area. Sensitivity analysis of changes in prices and wages also showed that investment in low tree-form culture was economically feasible in Chungju, Gongju and Buyeo areas except for Jinju area.

• Journal of Korean Society of Forest Science
• /
• v.100 no.2
• /
• pp.218-225
• /
• 2011

The purpose of this study is to estimate the economic impacts of National Natural Recreation Forests using a regional input-output (I-O) model. Based on the regional I-O transactions tables developed by Bank of Korea (2009), National Natural Recreation Forests related sectional multipliers were derived with respect to output, income, employment, and value-added. Furthermore, surveys questioned National Natural Recreation Forests visitors in order to estimate per capita expenditures. The result shows that one National Natural Recreation Forests generated 3,380 million Won of output impact, 328 million Won of income impact, 1,017 million Won of value-added impact, and 22 full-time jobs within local effect, respectively. Also, one National Natural Recreation Forests generated 687 million Won of output impact, 85 million Won of income impact, 245 million Won of value-added impact, and 6 full-time jobs outside local effect, respectively.

• Journal of Korean Society of Forest Science
• /
• v.112 no.4
• /
• pp.561-573
• /
• 2023

National forests have an advantage over private forests in terms of higher investment in capital, technology, and labor, allowing for more intensive management. As such, national forests are expected to serve not only as a strategic reserve of forest resources to address the long-term demand for timber but also to stably perform various essential forest functions demanded by society. However, most forest stands in the current national forests belong to the fourth age class or above, indicating an imminent timber harvesting period amid an imbalanced age class structure. Therefore, if timber harvesting is not conducted based on systematic management planning, it will become difficult to ensure the continuity of the national forests' diverse functions. This study was conducted to determine the optimal volume of timber production in the national forests to improve the age-class structure while sustainably maintaining their economic and public functions. To achieve this, the study first identified areas within the national forests suitable for timber production. Subsequently, a forest management planning model was developed using multi-objective linear programming, taking into account both the national forests' economic role and their public benefits. The findings suggest that approximately 488,000 hectares within the national forests are suitable for timber production. By focusing on management of these areas, it is possible to not only improve the age-class distribution but also to sustainably uphold the forests' public benefits. Furthermore, the potential volume of timber production from the national forests for the next 100 years would be around 2 million m³ per year, constituting about 44% of the annual domestic timber supply.

• Environmental and Resource Economics Review
• /
• v.4 no.2
• /
• pp.345-381
• /
• 1995

생물서식지 보호나 산림보호 등을 목적으로 한 국제환경협약들은 향후 국내 가용 토지공급계획에 차질을 줄 수 있다. 즉, 토지공급의 제약은 지가상승과 직결되고 이는 우리나라 산업전반에 상당한 영향을 미치게 된다. 특히 우리나라가 최근 지가안정의 한 방법으로 택지개발 및 공급정책을 사용하고 있는 현실을 감안할 때 경제에 미치는 파급효과가 클 수 있다. 따라서 본논문의 목적은 국내 가용토지공급계획에 제약을 줄 수 있는 국제환경협약들을 살펴보고 예상되는 시나리오하에서 국민총생산 등 국내경제에 미칠 파급효과를 구체적으로 계량화하는데 촛점을 맞추고 있다. 이를 위해서는 토지공급과 토지가격, 그리고 각 거시변수들간의 연관관계를 동시에 파악할 수 있는 연립방정식 체계의 거시계량모형의 구축이 필요하다. 이러한 모형의 개발도 본논문이 갖는 의미 중에 하나일 것이다.

• Journal of Korean Society of Forest Science
• /
• v.110 no.3
• /
• pp.440-452
• /
• 2021

This study identified and evaluated conditions for continued participation of private forest owners in forest carbon offset programs. The probability of continuing forest carbon offset projects, which delays greenhouse gas emissions by extending harvesting periods, increases with increasing price of carbon offset credits, public recognition of forest value, and education level. Willingness to Accept (WTA) was estimated using a Multiple Bounded Dichotomous Choice Question, which was 17,039 KRW/tCO₂ for extending age to 60 years, and 23,070 KRW/tCO₂ for 100 years. The following findings aim to promote participation and supply of carbon offset programs in private forests according to the study outcomes. First, introducing policies supporting private forest owners bearing opportunity costs for avoiding greenhouse gas emissions by postponing timber harvest is needed. Second, educational programs for private forest owners whose awareness of and interests in the public value of forest is necessary. Third, although having participated from the beginning of the offset program, finding ways to lead continuous participation of forest owners who are less likely to accept WTA is also necessary.

• 발명특허
• /
• v.30 no.9 s.351
• /
• pp.40-44
• /
• 2005

1960년대 후반에 들어서면서 국내 경제가 급속도로 성장, 식량의 자급화와 산림 녹화 산업이 발달하게 되었고, 화학·철강·기계공업에 대한 투자와 함께 산업이 고도화되기 시작했다. 이와 함께 자연을 효율적으로 이용하기 위해 인공적으로 개조를 하는, 즉 종합적인 국토개발이 진행되었는데, 이는 인구의 증가와 더불어 생활의 영역이 확대되면서 발달된 토목 및 과학기술의 발달로 인해 가능한 것이었다. 1962년 제1차 경제개발 5개년 계획이 수립되면서 개발효과가 큰 경인특정지역과 공업단지를 위한 울산지역, 토지개간. 수자원개발을 위한 영산강지역 등을 중심으로 국토를 정비하고 주거의 환경을 개선하기 위한 국가적인 작업이 추진되었고 자연스럽게 건설 산업이 호황을 이루게 되었다.

• 주택과사람들
• /
• no.7 s.24
• /
• pp.1-4
• /
• 1992

한국주택협회는 경제$\cdot$사회의 여건변화에 부응하여 토지의 이용규제로 인한 국민의 불편을 최소화하고, 토기개발 수용에 따라 토지공급이 신속$\cdot$원활하게 이루어질 수 있도록 경지지역과 산림보전지역 등에서의 각종 행위제한을 완화하고, 개발촉진지역 세분용도지구의 종류를 대폭 축소함과 아울러 지방자치단체에 대한 권한 위임폭을 확대하기 위하여 국토이용관리법시행령을 개정 추진중에 있음. 동 시행령(안)은 3월 20일 경제장관회의 심의 후 국무회의심의를 거쳐 4월중 개정$\cdot$공포될 계획임.