• Journal of the Korean Society of Hazard Mitigation
• /
• v.11 no.2
• /
• pp.163-170
• /
• 2011

Natural stream disasters due to a localized torrential and flash flood has occurring in a small stream especially un-implemented small stream. The survey results during ten years from 2001 to 2010 show that the small stream implementation projects (SSIPs) expenses is increasing with the damages is generally decreasing with variableness in which SSIPs is contributing to disaster prevention in a small stream. This study develop guideline for the selection of SSIPs to support high risk stream at first and save the small streams located on the mountainous area, prevention area and agricultural area which streams have no implementation effects. Developed sub items in guideline are evaluated by stream data collected from 212 small streams where it is proved that sub distance of each item are well arranged by normal distribution. This SSIPs is useful for selecting high risk small stream at first to maximize disaster risk reduction with minimum SSIPs expenses. Also, this SSIPs is used for leading to save small stream on the upstream to minimize flood damages on the down stream with selection a SSIP purchasing agricultural land for preparing flood plane.

• Journal of the Korean Institute of Landscape Architecture
• /
• v.52 no.2
• /
• pp.21-38
• /
• 2024

This study aims to establish an efficient street green area to improve the urban thermal environment and enhance pedestrian thermal comfort. Specifically, This study identified parameters applicable to green space planning and design, analyzed thermal environment mitigation mechanisms for each parameter, and, based on these findings, proposed methods for tree species selection and planting in green space planning and design. To achieve this, 61 papers were selected through a four-stage process from both domestic and foreign sources. The selected papers were analyzed, and the following main results were derived: In open street canyons with high stress levels due to low aspect ratios and high sky view factors(SVF), broadleaf trees with wide crown widths, low trunk heights, high leaf area index(LAI), and high crown heights were found effective in reducing heat, thereby increasing the amount and quality of shade. In contrast, in deep and narrow street canyons with relatively low heat stress due to high aspect ratios and low SVF, broad-leaved trees with narrow crown widths, high trunks, low crown heights, and low LAI were effective in reducing heat by enhancing ventilation. This study can serve as fundamental data for establishing standards for street green spaces to improve the thermal environment of street canyons and enhance thermal comfort of pedestrians. Additionally, it can be valuable when selecting the location and prioritizing street green spaces. Moreover, it is anticipated to be a foundational resource for creating guidelines for green space planning and design in response to climate change.

• Asian-Australasian Journal of Animal Sciences
• /
• v.24 no.3
• /
• pp.303-321
• /
• 2011

The availability and efficient use of the feed resources in Asia are the primary drivers of performance to maximise productivity from animals. Feed security is fundamental to the management, extent of use, conservation and intensification for productivity enhancement. The awesome reality is that current supplies of animal proteins are inadequate to meet human requirements in the face of rapidly depleting resources: arable land, water, fossil fuels, nitrogenous and other fertilisers, and decreased supplies of cereal grains. The contribution of the ruminant sector lags well behind that of non-ruminant pigs and poultry. It is compelling therefore to shift priority for the development of ruminants (buffaloes, cattle, goats and sheep) in key agro-ecological zones (AEZs), making intensive use of the available biomass from the forage resources, crop residues, agro-industrial by-products (AIBP) and other non-conventional feed resources (NCFR). Definitions are given of successful and failed projects on feed resource use. These were used to analyse 12 case studies, which indicated the value of strong participatory efforts with farmers, empowerment, and the benefits from animals of productivity-enhancing technologies and integrated natural resource management (NRM). However, wider replication and scaling up were inadequate in project formulation, including systems methodologies that promoted technology adoption. There was overwhelming emphasis on component technology applications that were duplicated across countries, often wasteful, the results and relevance of which were not clear. Technology delivery via the traditional model of research-extension linkage was also inadequate, and needs to be expanded to participatory research-extension-farmer linkages to accelerate diffusion of technologies, wider adoption and impacts. Other major limitations concerned with feed resource use are failure to view this issue from a farming systems perspective, strong disciplinary bias, and poor links to real farm situations. It is suggested that improved efficiency in feed resource use and increased productivity from animals in the future needs to be cognisant of nine strategies. These include priorities for feed resource use; promoting intensive use of crop residues; intensification of integrated ruminant-oil palm systems and use of oil palm by-products; priority for urgent, wider technology application, adoption and scaling up; rigorous application of systems methodologies; development of adaptation and mitigation options for the effects of climate change on feed resources; strengthening research-extension-farmer linkages; development of year round feeding systems; and striving for sustainability of integrated farming systems. These strategies together form the challenges for the future.

• Korean Journal of Agricultural and Forest Meteorology
• /
• v.15 no.3
• /
• pp.178-185
• /
• 2013

Forest fires are expected to increase in severity and frequency under global climate change and thus better understanding of fire dynamics is critical for mitigation and adaptation. Researchers with different background, such as ecologists, physicists, and mathematical biologists, have developed various simulation models to reproduce forest fire spread dynamics. However, these models have limitations in the fire spreading because of the complicated factors such as fuel types, wind, and moisture. In this study, we suggested a simple model considering the wind effect and two different fuel types. The two fuels correspond to susceptible tree and resistant tree with different probabilities of transferring fire. The trees were randomly distributed in simulation space with a density ranging from 0.0 (low) to 1.0 (high). The susceptible tree had higher value of the probability than the resistant tree. Based on the number of burnt trees, we then carried out the sensitivity analysis to quantify how the forest fire patterns are affected by wind and tree density. The statistical analysis showed that the total tree density had greatest effect on the forest fire spreading and wind had the next greatest effect. The density of the susceptible tree was relatively lower factor affecting the forest fire. We believe that our model can be a useful tool to explore forest fire spreading patterns.

• KSCE Journal of Civil and Environmental Engineering Research
• /
• v.34 no.1
• /
• pp.135-143
• /
• 2014

This study classified abnormal sea surface temperature changes of the central pacific region according to three evolution patterns. Focusing on typhoons that affect the Korean Peninsula, the research analyzed typhoon's occurrence spot and track, change in the central pressure characteristics, and the characteristics of change in typhoon precipitation and the number of occurrences of heavy rainfall in the Nakdong River Basin. As a result of analysis, in case of prolonged-decaying years and symmetric-decaying years, typhoon-related summer rainfall and heavy rainy days appeared to be higher than long-term average. But in case of abrupt-decaying years, the pattern of general decrease appeared. This is because typhoon's occurrence spot is located comparatively near the Korean peninsula, typhoon's central pressure is high, and typhoon's route generally moves to Japan. As the outcome, this study is expected to reduce flood damage through analyzing the characteristics of typhoon's activity according to CP El Ni$\tilde{n}$o evolution patterns and the characteristics of local typhoon rainfall. In addition, it is expected to provide useful information for establishing adaptation and mitigation to climate change.

• Journal of Appropriate Technology
• /
• v.6 no.2
• /
• pp.115-125
• /
• 2020

Housing issues such as mushrooming slums remain as chronic in most developing countries. Due to the state's restrained capacity, the housing-vulnerable's self-help approaches have been increasingly inevitable and vital for addressing the housing issues. However, there are still two challenges: securing good quality with economic efficiency, and climate change mitigation and adaptation. This study aims at doing an architectural experiment by developing and educating the production of eco-friendly interlocking stabilized soil bricks (ISSB) by employing vernacular materials and technologies for housing-vulnerable communities in Indonesia. In collaboration with a local architectural NGO, the study features a co-creation workshop in which 40 evicted households participate in the whole process. Soil analysis, mixed design, compression tests, and economic analysis are carried out. This paper illustrates that ISSB also has a high potential as an alternative to a burned brick or a cement block. The application of ISSB to self-help housing is expected to have socioeconomic and environmental effects, thereby facilitating the housing-vulnerable's self-help approaches and contributing to addressing the housing challenges in Indonesia.

• Journal of Life Science
• /
• v.32 no.7
• /
• pp.578-587
• /
• 2022

Korea, as the world's 7^th largest emitter of greenhouse gases, has raised the national greenhouse gas reduction target as international regulations have been strengthened. As it is possible to utilize coastal and marine ecosystems as important nature-based solutions (NbS) for implementing climate change mitigation or adaptation plans, the blue carbon ecosystem is now receiving attention. Blue carbon refers to carbon that is deposited and stored for a long period after carbon dioxide (CO₂) is absorbed as biomass by coastal ecosystems or oceanic ecosystems through photosynthesis. Currently, there are only three blue carbon ecosystems officially recognized by the Intergovernmental Panel on Climate Change (IPCC): mangroves, salt marshes, and seagrasses. However, the results of new research on the high CO₂ sequestration and storage capacity of various new blue carbon sinks, such as seaweeds, microalgae, coral reefs, and non-vegetated tidal flats, have been continuously reported to the academic community recently. The possibility of IPCC international accreditation is gradually increasing through scientific verification related to calculations. In this review, the current status and potential value of seaweeds, seagrass fields, and non-vegetated tidal flats, which are sources of blue carbon on the east coast, are discussed. This paper confirms that seaweed resources are the most effective NbS in the East Sea of Korea. In addition, we would like to suggest the direction of research and development (R&D) and utilization so that new blue carbon sinks can obtain international IPCC certification in the near future.

• 한국방재학회:학술대회논문집
• /
• 2011.02a
• /
• pp.173-173
• /
• 2011

최근 기후변화로 인한 기상재해 중 건조와 관련하여 인플루엔자, 호흡기질환 등과 같은 질병과 산불발생빈도의 증가로 인해 건강 및 재산상의 피해가 증가하고 있다. 특히, 한반도의 주택지역은 산림지역과 근접하여 산불 발생시 그 피해와 복구비용이 막대한 것으로 나타났다. 뿐만 아니라 향후 지구온난화가 가속화 될 경우 건조와 관련한 환자와 산불로 인한 피해가 증가할 것으로 예상되므로, 이에 대한 사전방재계획 및 복구계획 등이 필요하다. 이와 같은 건조현상 등의 자연재해에 대한 방재계획이 효과적으로 운영되기 위해서는 방재 정보를 인지하고 실천하는 개인의 적극적인 활용이 필요하다. 특히, 개인의 생활에 영향을 미치는 피해는 정부적인 대책보다 개인이 스스로 인지하여 대비함으로써 감소시킬 수 있기 때문에 재해에 대한 개인의 인지정도는 대책마련에 있어 중요한 요인이 된다. 이에 따라, 본 연구에서는 건조로 인한 질병 및 산불 발생 등 기상재해 증가에 대한 사전방재계획의 효과적인 운영을 위하여 설문조사분석을 통한 일반인의 건조특보 인지도 및 활용도 분석을 실시하였다. 또한, 기후가 변화함에 따라 더운 낮과 밤의 증가로 건조현상뿐만 아니라 폭염의 발생빈도도 증가할 것으로 예상되고 있다. 이와 관련하여 기후변화 적응측면에서 국민들의 건조특보 및 폭염특보와 관련한 정보 습득이 잘 이루어지고 있는지를 파악하고자 한다. 이를 위해, 선행연구에서 대학생의 주된 폭염특보 관련 정보습득경로가 TV와 인터넷인 점을 참고하여, 기상청에서 제공하는 건조특보와 폭염특보 발표일수와 TV, 인터넷의 대중매체를 통한 보도회수를 비교 분석하였다. 본 연구를 통해 대학생집단과, 10대, 20대의 저연령층의 인지도가 상대적으로 낮은 것으로 파악되었으며, 이는 대중 매체를 통한 건조특보와 관련한 정보전달의 부족으로 나타났다. 폭염특보와 관련한 언론보도는 기상전달뿐만 아니라, 폭염의 위험성, 폭염으로 인한 피해상황, 폭염특보제 홍보, 폭염과 관련한 대비책 등 다양한 내용으로 기재되었다. 반면에, 건조특보의 경우에는 대부분이 단순 기상전달로 폭염특보에 비해 보도의 다양성이 결여되어 있었다. 차후 대중매체를 통한 이용자들의 접근성을 증대시키기 위해서 신속하고 정확한 정보전달이 필요하다. 산불 및 화재예방과 관련하여 기상청의 정확한 기상정보 제공과 사전방재계획 수립에 대한 필요성을 직업별, 연령별로 구성된 각 집단의 50%이상이 느끼는 것으로 나타났다. 이에 따라, 기상정보 전달의 핵심인 기상청을 중심으로 온라인/오프라인 상의 기초교육부터 체계적인 사전방재계획 및 안전교육 프로그램 마련이 필요하다.