• 상하수도학회지
• /
• 제36권5호
• /
• pp.289-296
• /
• 2022

Mangyeong River and Dongjin River are highly dependent on external regions for domestic and agricultural water, and the agricultural water supply and use system of those rivers are very complicated. For smooth water supply, rivers are used as a supply system. Of the total river water use permits (as of 2019), agricultural water accounts for 97.5%, 80.4% in Mangyeong River and Dongjin River, respectively. The excessive intake of river water as agricultural purpose is causing the stream to dry out and to deteriorate the ecological health of the river. It is necessary to minimize the water use system that takes in and utilizes river water. In both rivers, the flow rate of agricultural drainage and the load of major water quality items that flowing into the main stream are similar to or higher than those of the major tributaries, indicating that management is necessary to improve the water quality of the river. It is necessary to understand the effect of agricultural drainage on river water quality by establishing a continuous monitoring system for the form of agricultural drainage.

• 농촌계획
• /
• 제27권3호
• /
• pp.11-20
• /
• 2021

Recently, natural disasters caused by climate change have become more frequent across the world. Our country is also not exceptional, and it is urgent to come up with appropriate measures in the agricultural sector as the size and intensity of drought are becoming severe. Consequently, the Ministry of Agriculture and Food has continuously raised the need for efficient water management and governance to overcome the periodic drought. Thus, there is a need for water-saving education and water conservation governance for sustainable and efficient use of agricultural water. Governance is a cooperative mechanism involving various stakeholders, such as central, local, civil society, and businesses, to solve regional or social problems, with different definitions and concepts depending on the field or scope. In this study, we aim to present basis of a governance framework for direct water management participation involving the key agricultural water use stakeholders to imbibe the culture of water savings and conservation practices. Based on this, water-saving governance was established and operated in Gyeongju and Yeoju, in South Korea as a 'water conservation practice', while the water management status of local farmers, the reliability and importance of stakeholders, and the need for governance were investigated. The results indicate that the involvement of various stakeholders in the governance of water management yielded water-saving effects. This study provides the directions of making a framework for water-saving governance establishment and operation. It is expected that sustainable agricultural water use can be achieved in response to climate change if the governance builds and operates with agricultural water use stakeholders based on the continuous government supports.

• 한국막학회:학술대회논문집
• /
• 한국막학회 1998년도 제6회 하계 Workshop (98 한국막학회, 국립환경연구원 국제 Workshop, 수자원 보전과 막분리 공정)
• /
• pp.25-48
• /
• 1998

Current topics related to membrane technology under the recent water environment are as follows: - Cryptosporidum Outbreak - Integrity Control System - Water re-use - Recycle Society - Biotreatment and Membrane - Slurry or Sludge Treatment I would like to introduce the actual examples regarding water re-use. mainly on the above 5 topics.

• 한국농공학회논문집
• /
• 제58권5호
• /
• pp.19-28
• /
• 2016

This study was to design the optimal locations of the water level monitoring to quantify the agricultural water use in irrigation area supplied from an agricultural reservoir. In most of agricultural areas without TM/TC (Tele-Monitoring and Tele-Control) or monitoring network, irrigation water have been supplied on conventional experience and agricultural reservoir have been operated based on the operating simulation results by HOMWRS (Hydrological Operation Model for Water Resources System). Therefore, this study quantified the amount of agricultural water use in an irrigation area (Musu Reservoir, Jincheon-gun) by establishing water level monitoring network and analyzed the agricultural water saving effect. According to the evaluation of the economic values for water saving effect, the saving agricultural water of 1.7 million ton was analyzed to have economic values of 0.85 million won as water for living, and 1.78 million won as water for industrial use. It is identified to secure economic feasibility of the new water monitoring network by establishing one monitoring point in the entrance, irrigation area and endpoint through the economic analysis.

• 한국수자원학회논문집
• /
• 제43권4호
• /
• pp.325-336
• /
• 2010

본 연구에서는 금강유역의 물이용과 댐의 영향에 의한 하천유황의 변화를 평가하였다. 유황변화의 압력지표로서 하천수 이용률과 담수지수를 분석하였다. 유황의 정량적인 변화 분석을 위하여 유황곡선, 유황계수, 홍수 및 갈수 빈도분석과 유량변동분석법을 적용하였다. 8개 분석 대상지점의 결과는 댐 건설전의 유황과 비교할 때 댐과 물이용의 영향으로 고유량 범위에서는 감소하고, 저유량 범위에서는 증가하고 있음을 구체적인 수치로 확인하였다. 금강유역은 연평균유출량의 24%를 저류할 수 있는 139개의 댐과 저수지에 의해 유황이 조절되고 지표수의 이용률이 36%로서 이들의 지표가 유황변화의 압력요인이 되고 있다.

• 상하수도학회지
• /
• 제14권3호
• /
• pp.217-223
• /
• 2000

This study is to investigate the effect on the mount of domestic water use by the water pressure and the number of a family for the each house. Tow apartment sites which had elevated water tanks on the roof were selected as the reserch area. Tow techniques such as Analysis of Variance(ANOVA) and Analysis of Correlation were used for the analysis.

• 한국수자원학회:학술대회논문집
• /
• 한국수자원학회 2010년도 학술발표회
• /
• pp.447-451
• /
• 2010

It is quite important for manufacturing firms to stably secure water, because industrial water is used for a variety of purposes as one of the important inputs in the production process. Despite the significance of industrial water use and the increase of industrial water demand, relatively little has studied regarding the industrial water use in Korea. This paper employs the marginal productivity approach in order to estimate the economic value of water in Korean manufacturing industry, and we use the information of 53,912 factories surveyed in 2003. The result of the likelihood ratio test shows that Trans-log is an appropriate model for estimating the data of this study. In Trans-log function model, the industry-wide output elasticity of water is 0.0104, and the marginal value is KRW 1,156 per ton. The estimated values differ across the sectors and these values range from the high value of about KRW 13,760 per ton in the transportation equipment sector to low values of KRW 428 per ton in the precision instrument sector. The research provides useful information to help policy-makers in developing and implementing more appropriate policies regarding the management and distribution of water resources by estimating the value of water resources by sector. In addition, Korean government enables the drafting of future water pricing scenarios based on the estimated value information.

• 대한원격탐사학회지
• /
• 제22권5호
• /
• pp.421-425
• /
• 2006

It can be important framework data to monitor the change of land-use pattern of river boundary in design and management of river. This study analyzed the change of land-use pattern of Gab and Yudeung River using time-series aerial images. To do this, we carried out radiation and geometric correction of image, and estimated land-use changes in inland and floodplain. As the analysis of inland, the ratio of residential, commercial, industrial, educational and public area, that is urbanized element, increases, but that of agricultural area shows a decline on the basis of 1990. Also, Minimum Distance Method, which is a kind of supervised classification method, is applied to extract water-body and sand bar layer in floodplain. As the analysis of land-use, the ratio of level-upped riverside land and water-body increases, but that of sand bar decreases. These time-series land use information can be important decision making data to evaluate the urbanization of river boundary, and especially it gives us goodness in river development project such as the composition of ecological habitat.

• Ecology and Resilient Infrastructure
• /
• 제2권3호
• /
• pp.247-254
• /
• 2015

Changes in land-use type can affect soil and water properties in stream ecosystems. This study examined the effects of different land-use types on biogeochemical properties and microbial activities of a stream. We collected water and sediment samples in a stream at three different sites surrounded by varying land-use types; a forest, a radish field and a rice paddy. Nitrogen contents, such as nitrate, nitrite and total nitrogen in the stream water body, showed significant differences among the sampling sites. The highest nitrogen values were recorded at the site surrounded by cropland, as fertilizer runoff impacted the stream. Soil organic matter content in the sediment showed significant differences among sites, with the highest content exhibited at the forest mouth site. These differences might be due to the organic matter in surrounding terrestrial ecosystems. Microbial activities determined by extracellular enzyme activities showed similar values throughout all sites in the water body; however, the activities in the sediments exhibited the highest values near the forest site and mirrored the soil organic matter content values. From these results, we conclude that different land-use types are important factors affecting water and sediment properties in stream ecosystems.

• 지역연구
• /
• 제37권1호
• /
• pp.45-61
• /
• 2021

본 연구의 목적은 한강수계 물이용부담금을 둘러싼 이해당사자들의 갈등해결을 위한 최적방안을 제시하는 방법론적 틀을 설계하고, 분석결과를 통해 한강수계 물이용부담금 갈등해결을 위한 정책 방향을 제시하는 것에 목적을 두고 있다. 이를 위해 한강수계 물이용부담금을 두고 서로 다른 입장을 취하고 있는 의사결정자들 간의 다면적인 갈등의 메커니즘을 이해하는 과정이 선행되었으며 갈등해결을 위한 그래프모형을 적용하여 한강수계 물 이용부담금 갈등 해결을 위한 최적방안을 도출하였다. 분석결과에 따르면 한강수계 물이용부담금 갈등의 해결점을 찾을 수 있는 최적의 상태는 서울·인천 지역이 지속적으로 물이용부담금 인하를 요구하는 것과 동시에, 서울·인천·경기 지역이 기존 부과요율에 따른 부과금을 납부하는 것이다. 그리고 한강수계관리위원회는 갈등 해결을 위해 물이용부담금 부과요율 결정에 대한 의사결정구조 합리화, 서울·인천 지역에 대한 한강수계관리기금 지원근거 마련, 수혜 지역 및 주민의 특성을 고려한 한강수계관리기금의 투명한 운용 등을 포함하는 서울·인천 및 경기지역이 원하는 정책을 수립할 때 갈등의 해결점을 찾아갈 수 있었다. 본 연구는 한강수계 물이용부담금 갈등해결 관련 환경정책 방향을 수립하는데 객관적인 의사결정 정보 제공을 할 수 있고, 환경의 공동 사용에 따른 갈등과 관련된 유사한 후속연구에 방법론적인 기반을 제공할 것으로 기대된다.