• 한국농림기상학회지
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• 제21권4호
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• pp.286-296
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• 2019

본 논문에서는 남한지역을 대상으로 토양학적 그리고 기후학적 적지 기준을 통합하여 최대저해인자 방법으로 과수 2종(복숭아와 포도)에 대해서 재배적지를 구분하였다. 복숭아는 최적지 2.21%, 적지 19.21%, 가능지(저위생산지 포함) 12.07%, 부적지 66.52%로 구분되었고, 포도는 최적지 3.65%, 적지 17.98%, 가능지(저위생산지 포함) 11.85%, 부적지 66.52%로 구분되었다. 토양과 기후 조건의 통합에 의해 구분한 복숭아와 포도의 적지는 토양 조건만으로 구분한 적지와 유사한 것으로 분석되었고, 토양 조건에 의한 구분한 적지(최적지 포함) 면적이 기후 조건에 의해 구분한 면적보다 적은 것으로 분석되어서 토양 조건이 적지구분의 저해인자로 확인되었다. 어떤 행정구역(도)에서 적지(최적지 포함)로 구분된 면적이 많으면 많을수록 더많은 과수가 재배될 것이라는 가정 하에, 행정구역별 복숭아와 포도의 실재 재배면적 비율과 토양 및 기후 조건 통합의 최대저해인자법에 의해 구분한 적지면적과 비교하였을 때, 실재 과수 재배면적의 비율이 적은 행정구역에서는 해당 과수의 재배면적 확대를 고려할 필요가 있을 것이다. 다만, 과수 적지구분의 정확도 향상을 위해서는 분석적 계층화법(AHP)과 같은 개선된 방법과 농장단위의 과수 생산량과 수익자료를 추가하여 비교 분석할 필요가 있다.

• 한국지하수토양환경학회지:지하수토양환경
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• 제22권5호
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• pp.1-12
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• 2017

This study reviewed the groundwater policies of USA as a benchmarking for the purpose of improving groundwater polices, regulations, and plans in Korea. Each state of the USA has its own unique groundwater policies. Recently, severe drought in the western parts of the USA resulted in the launch of the California Statewide Groundwater Elevation Monitoring (CASGEM) program. CASGEM classified a total of 515 alluvial groundwater basins of the California State to four prior groups (high, medium, low, and very low prioritization). In Texas, a total of 101 Groundwater Conservation Districts (GCDs) over the state has controlled groundwater pumping amounts in their own management areas and 16 Groundwater Management Areas (GMAs) over the state have directly managed groundwater aquifer. Direct management for aquifers by GMAs would be the most scientific method for groundwater management, which expected to provide water consumers the more advavnced groundwater service. These groundwater management strategies of the USA can be possibly considered in groundwater plans for national and local governmental authorities, which possibly results in more optimal groundwater management in Korea.

• 한국지하수토양환경학회지:지하수토양환경
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• 제22권5호
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• pp.112-127
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• 2017

Groundwater accounts for more than 10% of the total water supply in Korea. However, the contribution of groundwater to public water supply systems has been poorly played role throughout the country except for Jeju Island. Compared with the groundwater uses in foreign countries, the pattern of groundwater use in Korea seems to be very deformed and unreasonable. Currently, the development and use of groundwater in Korea are mostly carried out by the individuals, and public sectors such as central and local governments are not actively involved in such activities. Private groundwater use and management will continue to cause groundwater depletion and pollution problems. It is necessary to actively enhance the role of public authorities in groundwater managements by engaging precise hydrogeological surveys and proper economic evaluation in the development and operation of groundwater sources. Also, in order to solve the problems that public water supply systems overly rely on the surface water sources, it is necessary to take policies that require the water supply companies to secure a variety of water sources.

• 환경정책연구
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• 제3권1호
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• pp.1-29
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• 2004

The role of the financial institution to promote corporate sustainability may be reviewed in two angles, as a commercial lender and an investor. As a commercial lender, financial institutions should minimize the legal risks and the political risks. Financial institutions began to recognize environmental risks as legal risks that directly affect their lending practices since the legislation of the Comprehensive Environmental Response, Compensation, and Liability Act("Superfund") of the U.S.A. The so-called lender liability rule has a detailed guideline where the financial institutions may be exempted from the Superfund Liability. Similar attempts are noticed in the recent EU White Paper on Environmental Liability. In Korea, comprehensive environmental liability laws are yet to be developed. The Soil Environment Preservation Act now includes a far-reaching environmental liability provisions, where the owners and operators as well as receivers of the facility bear responsibility. However, whether the financial institutions may be captured as a potential responsible party is not very clear. Until the relevant legislation is developed and court decisions accumulate, Korean financial institutions are well advised to raise awareness on this issue, to develop environmental policies and to train personnels.

• 한국환경복원기술학회지
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• 제21권3호
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• pp.67-81
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• 2018

We tried to analyze qualitatively a total of 110 the research papers which were related domestic ecological restoration technologies about 15 years through semantic network analysis in social network analysis. In order to understand the research trends of ecological restoration technologies, we analyzed the degree centrality and betweenness centrality of the Stream/Wetland, Slope, Soil/Others fields selected as Word Cloud. As a result, ecological restoration technologies have been changed. They were focused on the restoration of species or their habitats in the past. However, they have been evolved into the detailed systems to respond in unpredictable natural disasters and climate change, high-resolution image implementation technology to accurately grasp the practical environment and methods related to environmental restoration for human in urban ecosystem. In the future, investment and technology for the ecosystem restoration field will be continuously demanded for the symbiosis of human beings and species in the damaged ecosystem. Therefore, the research trend of ecological restoration technologies should be provided as reliable guidelines when decision makers establish the policy direction or when researchers select their subjects.

• 한국지하수토양환경학회지:지하수토양환경
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• 제22권6호
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• pp.104-111
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• 2017

As carcass disposal is increasing widely in Republic of Korea, there is a need to comprehensively analyze the impacts and subsequent damages of carcass disposal. Especially, since environmental policy aims to not only reduce environmental damages, but also enhance overall sustainability, we apply the concept of environmental welfare to assess the comprehensive impact of carcass disposal, especially focusing on the rural area. In specific, assessment criteria were suggested based on the four categories related to environmental welfare, which were 'environmental quality', 'level of environmental service', 'environmental safety', and 'participation, openness to public, and communication'. The results showed negative impacts of carcass disposal in environmental, social and economical elements. Overall decrease in environmental quality negatively impacts the other elements of environmental welfare. Furthermore, there were discrepancies of level of impacts and damages among stakeholder. In the end, we suggest critical elements that need to be applied in relevant policies and regulation to promote effective carcass disposal management.

• 한국지하수토양환경학회지:지하수토양환경
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• 제22권4호
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• pp.49-59
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• 2017

This study estimated the nitrogen budget, including gaseous nitrogen oxides ($NO_x$), of South Korea in 2012~2014. The nitrogen budget was classified into three categories: agricultural and livestock, forest, and city. To estimate the nitrogen budget, several input and output parameters were investigated, including deposition, fixation, irrigation, chemical fertilizer use, compost, fuel, denitrification, volatilization, runoff, crop uptake, leaching, and $NO_x$ emissions. The annual nitrogen inputs from 2012 to 2014 were 6,202,828, 6,137,708, and 6,022,379 ton/yr, respectively. The corresponding annual nitrogen outputs were 1,393,763, 1,380,406, and 1,360,819 ton/yr, respectively, signifying a slight decrease from 2012 to 2014. $NO_x$ was the parameter contributing to the nitrogen budget to the greatest extent. The annual ratios of $NO_x$ emissions by vehicles, power plants, and businesses were 0.31, 0.31, and 0.30 in 2012, 2013, and 2014, respectively. A change in government policy that prohibited the disposal of livestock manure and sewage sludge in the ocean from 2012 affected nitrogen budget profile. As a result, the ocean disposal ratio completely diminished, which differs from previous studies.

• 한국정보시스템학회지:정보시스템연구
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• 제27권4호
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• pp.149-165
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• 2018

Purpose As Korean economy has been sluggish in recent years, firms' interest in publicly financed projects has increased due to the relatively increasing proportion in the economy. Since 1999, publicly financed projects in Korea need to undergo preliminary feasibility study to evaluate economic efficiency and policy quality if they are larger than a certain scale. The benefits of public projects are one of the most important factors in the preliminary feasibility study but are difficult to estimate due to their nature. Design/methodology/approach This study estimates the benefits of the agricultural soil information database, a public database in Korea. The method used in the study is the stated preference method which is formally used in Korea's preliminary feasibility study. Data are collected through surveys and a logit model is constructed to be estimated by the maximum likelihood estimation method. Findings As the first study evaluating a public database, this study can be used as a baseline in all public database projects developed in the future. In addition, this study can contribute to improving the understanding of both private companies and public organizations who are interested in the cost-benefit analysis and estimation procedure for the publicly financed projects.

• 한국지하수토양환경학회지:지하수토양환경
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• 제27권3호
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• pp.1-10
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• 2022

Most wells developed in Jeju island before the enactment of the Groundwater Management Ordinance in 2002 are vulnerable to aquifer contamination due to inflow of upper groundwater having the high concentration of nitrate nitrogen, likely due to incomplete grouting in upper section of the wells. Although these wells require entire reinstallation, it is often necessary to rehabilitate the existing wells due to various constraints. Therefore, to identified the inflow section of contaminants, the thermal level sensor (TLS) technique was firstly applied for three wells, which enables to monitor temperature variations in every 50 cm depth. Then, the grouting material was injected to the upper section to prevent the inflow of upper contaminated groundwater into the entire aquifer. By applying TLS technique, it was found that the temperature deviations in the upper groundwater inflow section decreased sharply. Moreover, both the change in the concentration of nitrate nitrogen in the rainy/dry seasons and the average concentrations were found to decrease rapidly after grouting material injection. Consequently, the application of TLS proposed in the study turned out to be appropriate to prevent aquifer contamination.

• 한국환경복원기술학회지
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• 제11권6호
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• pp.1-10
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• 2008

The study was aimed at analyzing the relationship between the characteristics of urban green infrastructure and stormwater runoff in a small urban watershed composed of 22 drainage basins. The green areas of which soils are not sealed and allow water infiltrate, were examined for different types of green spaces. In a comparative study for drainage basins of which green spaces are 15.5% and 34.4%, respectively, runoffs were not different with the size of green space. It was attributed to that the increase of runoff by greater road area offset the advantage of greater green area. Another comparative measurement of runoff for drainage basins with similar green area size showed that runoff decreased with greater permeable area (school ground area) and smaller road area. The runoff measurements could address that runoff rates are affected not only by green area size but also by the type of green area and other land covers related to permeability and flow into drainage. It implicated that the improvement of urban green infrastructure as a functional unit for water infiltration and interception is important for stormwater runoff management.