• 한국습지학회지
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• 제18권3호
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• pp.218-225
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• 2016

수변지역은 하천의 수질 및 수생태계의 보전과 수변경관의 훼손 방지 특히, 안정적인 상수원의 확보를 위하여 다양한 정책과 계획이 수립되어 왔다. 그럼에도 불구하고 상수원보호구역과 수변구역 등 특정지역을 제외한 수변지역은 소규모 개발사업이 무분별하게 입지하게 되면서 하천의 수질 및 경관을 훼손되고 있다. 본 연구에서는 사업유형별로 동 식물, 지형 지질, 경관, 수질 등의 측면에서 예상되는 환경영향을 분석하고, 환경적 영향 정도에 따라 3-12점까지의 환경점수를 부여하여 중점검토사업과 일반검토사업, 간이검토사업 등으로 구분하였다. 마지막으로 사업유형별로 예상되는 환경영향을 회피하거나 최소화할 수 있도록 평가항목별로 평가기준을 마련하여, 수변지역의 소규모 개발사업을 합리적으로 규제하여 친환경적 개발이 이루어질 수 있도록 하였다.

• 한국기후변화학회지
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• 제7권3호
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• pp.351-356
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• 2016

The carbon capture and storage (CCS), which collects and stores carbon dioxide in a geological site, is a promising option to mitigate climate change. However, there is the possibility of carbon dioxide leakage from the soil in the steps of collecting, transporting, and storing. To ensure the feasibility of this technology, it is important to monitor the leakage of carbon dioxide and to assess the potential impacts. As plants are sensitive to the changes in carbon dioxide in the soil environment, we can utilize plant parameter to detect the carbon dioxide leakage. Currently, chlorophyll a content is a conventional index indicating the changes in plants, however, this method is labor intensive and it only utilizes a small portion of leaves. To overcome its limitations, a simple spectroscopic parameter, DGCI (dark green color index), was suggested as an easy and quick indicator. In this study, we compared the values of chlorophyll a contents with DGCI from the experiment investigating the impacts of high underground $CO_2$ on grape plants. Results suggest that DGCI had high correlation with chlorophyll a contents and it has high potential to be utilized as an easy indicator to monitor plants' responses to $CO_2$ treatment.

• 한국물환경학회지
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• 제40권2호
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• pp.89-100
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• 2024

Climate change has a broad impact on the entire water environment, and this impact is growing. Climate adaptation in water supply systems often involves quantity and quality control, but there has been a lack of research examining the impacts of climatic factors on water supply productivity and operation conditions. Therefore, the present study focused on, first, building a database of climatic factors and water purification operating conditions, and then identifying the correlations between factors to reveal their impacts. News big data was analyzed with keywords of climatic factors and water supply systems in either nationwide or region-wide analyses. Metropolitan area exhibited more issues with cold waves whereas there were more issues with drought in the Southern Chungcheong area. A survey was conducted to seek experts' opinions on the climatic impacts leading to these effects. Pre-chlorination due to drought, high-turbidity of intake water due to rainfall, an increase of toxins in intake water due to heat waves, and low water temperature due to cold waves were expected. Pearson correlation analysis was conducted based on meteorological data and the operating data of a water purification plant. Heavy rain resulted in 13 days of high turbidity, and the subsequent low turbidity conditions required 3 days of high coagulant dosage. This insight is expected to help inform the design of operation manuals for waterworks in response to climate change.

• 산업경영시스템학회지
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• 제45권4호
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• pp.31-41
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• 2022

As the environmental impacts of fossil fuel energy sources increase, the South Korean government has tried to change non-environmental-friendly enery sources to environmental-friendly energy sources in order to mitigate environmental effects, which lead to global warming and air pollution. With both a limited budget and limited time, it is essential to accurately evaluate the economic and environmental effects of renewable energy projects for the efficient and effective operation of renewable energy plants. Although the traditional economic evaluation methods are not ideal for evaluating the economic impacts of renewable energy projects, they can still be used for this purpose. Renewable energy projects involve many risks due to various uncertainties. For this reason, this study utilizes a real option method, the Geske compound model, to evaluate the renewable energy projects on Jeju Island in terms of economic and environmental values. This study has developed an economic evaluation model based on the Geske compound model to investigate the influences of flexibility and uncertainty factors on the evaluation process. This study further conducts a sensitivity analysis to examine how two uncertainty factors (namely, investment cost and wind energy production) influence the economic and environmental value of renewable energy projects.

• 청정기술
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• 제2권2호
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• pp.44-50
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• 1996

"Pollution prevention" is an important and appropriate part of efforts to minimize the environmental impacts of industrial processes, but it is only a part. Even more important is to assess the environmental characteristics of processes across all stages of their lives. This paper presents a formalism for evaluating the environmental implications of processes at each life stage(a procedure termed "life-cycle assessment").

• 한국관개배수논문집
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• 제3권2호
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• pp.57-67
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• 1996

The purpose of this environmental study is to predict the environmental consequences of human development activity and to plan appropriate measures to eliminate or reduce adverse effects and to augment positive effects. The need to avoid adverse impacts a

• 한국환경복원기술학회지
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• 제11권2호
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• pp.40-54
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• 2008

Small and large dams are installed in the course of a stream for maintaining the water level of the stream or obtaining agricultural water. Currently about 18,000 of them are installed in Korea to supply water. However, the environmental problems of small dams are well known : the interruption of stream eco-corridors, deterioration of water quality in the upper reaches of the small dam, changes in the habitats of riparian organisms, damages to the stream scenery. In a very few of these small dams artificial eco-corridors like fishways are installed, but the number is very minimal.Accordingly, to efficiently restore stream eco-corridors by removing these small dams, it will be necessary to closely examine physical impacts, such as changes in the riverbed and changes in the shape of the stream caused by the removal, chemical impacts, such as changes in water quality, and transport and accumulation of contaminated sediments and biological impacts, such as changes in the habitats of organisms, and develop related technologies in advance, and have these technologies verified through demonstration application in the sites. In this study, we analyzed the physical, chemical and ecological impacts of the removal of the above-mentioned small dams, and conducted a research on the demonstration small dam removal project for a spot investigation. As a result, the small dam removal will restore the eco-corridor, there by improving the habitat of fishes and crustaceans. The number of major underwater organisms inhabiting the Gokreungcheon, such as Korean spotted sleepers, Chinese minnows, Microphysogobio yaluensis, Abbottina rivularis, stone morokos, striped shinners, long-nosed barbels, and Chinese mitten crabs, is expected to increase, and the food chain in the ecosystem will improve so that species diversity will improve as well.

• 농업과학연구
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• 제26권1호
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• pp.100-108
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• 1999

This paper reviews some methods on evaluating the impacts of low input farming on profitability, environments and human health. Measuring diverse effects of low input farming on the environmental economic aspects of agriculture poses a challenge because of difficulty in placing the objective value judgement on those impacts. This Study attempts to identify the individual attributes of low input agriculture and to examine the method of consturcting a simple index after assessing its marketed or non-marketed values in numerical terms. Validity of integrating socio-economic value of low input agriculture, which might be measured by multiple criteria approach, into a single index can be criticized. However, it might be meaningful in that this study suggest the guidance for how to assess the environmental and economic value of low input agriculture by single criteria and the possibility of overcoming the controversial subjectivity in weighing the different impact criteria.

• 한국농공학회:학술대회논문집
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• 한국농공학회 2002년도 학술발표회 발표논문집
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• pp.301-304
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• 2002

The EPIC model was applied to assess the environmental impacts of two contrasting tillage systems (conventional versus ridge tillage). The model was calibrated with field data and validated with another set of data. The errors between the 12-year predicted and observed means or medians were less than 10% for nearly all of the environmental indicators, with the major exception of a nearly 44% over prediction of the N surface runoff loss for Watershed 2. The predicted N leaching rates, N losses in surface runoff, and sediment loss clearly showed that EPIC was able to simulate the long-term impacts of tillage and residue cover on these processes.

• 한국철도학회:학술대회논문집
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• 한국철도학회 2008년도 춘계학술대회 논문집
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• pp.168-172
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• 2008

Due to sustainable development, international environmental regulations have been reinforced continuously. As Kyoto protocol has been effective in 2005, the reduction of $CO_2$ emission is a global urgent problem. Especially, Kyoto protocol related to energy consumption affects to national production system seriously. In 2013, Korea greenhouse gas reduction obligations as the country is almost certain measures to respond steps to prepare a plan to reduce $CO_2$ emission of industry. Also, the Environmental impacts with a fundamental review for railroad lines do not yet come true. Therefore, the introduction of LCA will be required to decrease environmental impacts released from railroad lines in the future