Recently, remanufacturing approach/technology, which includes a series of the processes of disassembling, cleaning, inspecting, repairing/reconditioning, reassembling components for resale, is becoming more popular as companies look for a way to combat the current climate crisis, and as it allows companies to reduce environmental impacts and to save energy and resources. This study analyzed the reduction effect of six environmental impacts and the savings effect of energy and resources by turbocharger remanufacturing compared to its newly manufacturing using a life cycle assessment (LCA) methodology. The results show that the most significant benefit of the turbocharger remanufacturing related to environmental impacts was the global warming potential (GWP), which could be reduced by 52.2%, followed by the abiotic depletion potential (ADP), terrestrial ecotoxicity potential (TETP), human toxicity potential (HTP), freshwater aquatic ecotoxicity potential (FAETP) and marine aquatic ecotoxicity potential (MAETP) which could be reduced by 51.9%, 44.8%, 44.2%, 42.6%, and 36.7%, respectively. Also, its resource saving could be obtained from 21.7 to 73.5% depending on the type of resources. Furthermore, turbocharger remanufacturing offered a significant energy saving of 83.9%. The results obtained from this study could be used for national policy-making to a net-zero carbon transition.

Objectives:The construction sector is a very important sector in achieving carbon neutrality. In modern society, construction has grown rapidly, and basic materials such as cement and concrete have contributed greatly to the development of construction. These materials emit a large amount of global warming substances during the raw material extraction and production process, causing serious environmental pollution. In order to establish a carbon reduction strategy to slow down global warming, we compared the environmental impacts of each building material and showed the current situation.Methods:The LCI DB for the construction materials used in the two-story wooden house (Building area 128.67m2, total floor area 235.73m2) located in the National Institute of Forest Science was extracted. Then, the data for LCA was processed and performed through the life cycle assessment methodology for the resources consumed from raw material collection, material production, and transportation stages. Then, based on the environmental performance labeling impact assessment method, a study was conducted on the environmental impact categories of the actual construction materials used and comparisons with other construction materials.Results and Discussion:When analyzing the environmental impact of concrete [25-21-120] and construction wood used in wooden house, the environmental impact was found to be 98.79% higher on average in the pre-manufacturing stage than in the manufacturing stage, and construction wood was confirmed to have a reduction effect of 62.21 kg CO2-eq per 1 m3 compared to concrete. Through the scenario, there was a carbon reduction effect of up to 36% when the entire area was replaced with wood. In addition, the environmental impact by major construction material was quantitatively quantified.Conclusion:When building a wooden house, reducing the amount of concrete equivalent to the amount of wood is expected to have a greenhouse gas reduction effect, so it is time to activate construction wood from the production process to the post-production stage to replace concrete. In addition, follow-up research on the development of construction technology with low environmental impact during construction should be continued. This study is expected to be used as a useful indicator for R&D and policies in the construction field in the future, as it quantitatively quantified the amount of CO2 reduction per m3 when replacing concrete with construction wood and numerically compared and analyzed six major environmental impact categories by major construction materials.

Purpose : At the national level, carbon absorption during the carbon neutrality goal plays an important role, and related forestry projects are continuously increasing. Until now, forest carbon absorption has been measured and managed in various ways at the national level, but specific carbon absorption indicators for each local government have not been approached in various ways. Accordingly, the carbon absorption footprint (CAF) was defined, and the carbon absorption amount and carbon absorption rate were calculated and analyzed to compare and analyze the current situation for each region.Method : As for the research method in this study, standard carbon absorption by tree species was matched on the basis of age level per forest area nationwide as of 2020, and the carbon absorption amount of metropolitan governments, the carbon absorption amount of 250 basic local governments, the carbon absorption amount per national land area, And the carbon absorption footprint per forest area was calculated. Afterward, the carbon absorption rate for the national land area and the carbon absorption rate for the forest area of the basic local governments were calculated.Results and Discussions : As a result of the study, the region with the highest amount of carbon absorption was in the order of Gangwon-do, Gyeongsangbuk-do, and Jeollanam-do, and the lowest carbon absorption was in the order of Gwangju Metropolitan City, Sejong Special Self-Governing City, and Daejeon Metropolitan City. Hongcheon-gun, Inje-gun, and Pyeongchang-gun in Gangwon-do had the highest absorption among basic local governments, followed by Yeongdeungpo-gu in Seoul, Dong-gu in Incheon, and Jung-gu in Busan in order of lowest. Seongbuk-gu, Gwangju-si, and Dong-gu, Daejeon were the basic local governments with a high absorption rate compared to the national land area, followed by Yeongdeungpo-gu, Dong-gu, Incheon, and Seongdong-gu, Seoul, respectively. Lastly, basic local governments with a high carbon absorption rate compared to forest areas were in the order of Seongbuk-gu in Seoul, Ulju-gun in Ulsan, and Hongcheon-gun in Gangwon-do, and Seongdong-gu, Gangdong-gu, and Dongjak-gu in Seoul were in the order of low rates. Overall, a lot of carbon was absorbed in Gangwon-do and Gyeongsangbuk-do, but when approaching the absorption ratio to the national area, on the contrary, Seoul, Gyeonggi, and Incheon showed high absorption rates. The ratio of carbon absorption to forest area was uniform across the country.Results : Based on this study, continuous research is needed to develop a forest creation scenario and achieve more carbon absorption. Since carbon absorption fluctuates greatly depending on forest management, it is considered that it will be an important indicator in terms of strategy presentation in afforestation or sink planning in the future for metropolitan or basic local governments.

Objectives : The domestic forest area is about 6,298 thousand ha as of 2020, accounting for 62.7% of the national land area of 10,041 thousand ha, but the domestic wood and wood product market is seriously dependent on imported products. As of 2020, the domestic wood utilization rate is 15.9%. This has been secured from around 5% by 1990 to about 16% by the last 10 years from '11 to '20, but has been maintained without increase until '21. As domestic demand for wood is 83% dependent on imports, uncertainties in the wood market in the international market are expected to increase in the future due to climate change, resource reporting, and international trade relations.Methods : In this study, the production and collection production of domestic wood by use were calculated by reducing the actual distribution nationwide and the number of trees being planted later by 5 to 10 years, respectively. Based on 2,310 thousand ha, the research target site was divided into 26.20% and 73.80% of national forests and private forests, respectively, and the corresponding cutting age was applied by matching them by tree type.Results and Discussion : The area subject to the logging order for timber production forests was calculated as a ratio of the actual logging area, and the result was calculated as a ratio of the actual logging amount. Afterwards, the final wood volume was calculated based on the results of the actual logging volume performance and the ratio of domestic wood production and collection performance. The calculated final volume of wood is produced for lumber, plywood, boards, chips/pulp, and other uses. As a result, when the harvesting age was shortened to 5 and 10 years as of 2020, timber increased at a rate of approximately 12.70% and 25.36% compared to the previous year. It was confirmed that this could increase the domestic wood utilization rate from about 16% to up to 20%.Conclusion In this study, the contribution of the domestic timber industry to the shortening of the harvesting period for timber production forests. It is believed that the results can be used as useful indicators for establishing policies for shortening the cutting period and managing persistent forests in the future.

The Taskforce on Nature-related Financial Disclosures (TNFD) refers to both the international organizing body and the disclosure framework it developed. Throughout this article, the term TNFD is used to encompass both the organization and the framework to ensure precision while maintaining conciseness. TNFD has emerged as a key mechanism for integrating nature-related risks and opportunities into corporate decision-making, extending the scope of existing environmental, social, and governance (ESG) and climate-related disclosures. As TNFD adoption remains at an early diffusion stage, empirical evidence on its global uptake and sectoral characteristics is still limited, particularly in nature-dependent industries such as forestry and environmental services. This study provides an exploratory mapping of global TNFD adoption patterns using the complete list of TNFD adopting organizations disclosed on the official TNFD platform as of June 2025. A total of 584 organizations across 54 countries were analyzed, with a focused examination of forestry- and environment-related entities. Rather than testing causal relationships, this research adopts a descriptive and structural analytical approach to identify geographic, institutional, and sectoral patterns of adoption. The results reveal a strong concentration of TNFD adoption in developed economies and corporate entities, while forestry-specific adopters remain limited in number. Notably, TNFD adoption does not appear to correlate with forest resource endowment, suggesting that governance capacity and financial disclosure readiness are more influential than ecological conditions. Based on these findings, the study discusses strategic implications for forestry and environmental organizations and proposes a conceptual framework for advancing nature-related financial disclosure in the sector. This research contributes an early-stage empirical foundation for understanding TNFD diffusion and offers practical insights for policymakers, corporations, and researchers seeking to operationalize nature-related disclosure frameworks.