• 한국환경과학회지
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• 제1권2호
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• pp.49-57
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• 1992

First, We classified man-made lakes in Korea as 4-type lakes, that is, there were River-run lakes, Dendritic lakes, Reservoir-lakes, River-mouth lakes, We studied on the environmental factors of 3-type lakes except River-mouth lakes, compared these lakes with natural lakes in foreign country. Environmental factors were watershed area, lake storage, mean depth, hydraulic retention time. As a results, 3-type lakes in Korea had remarkable differences one another according to above-mentioned environmental factors. First, We recognized that River-run lakes had higher nutrient loading according to having wider watershed area than natural lakes, and had lower algal growth rate according to shorter hydraulic retention time than natural lakes. Dendritic lake had higher nutrient loading than natural lakes, longer retention time than River-run lake. Reservoir-lakes had environmental factors between Dentritic lakes and River-run lakes. Therefore, If this studies had no quantitative results about various factors, We recognized that man-made lakes in korea had different environmental factors as compared with natural lakes, and had clear classification among 3-type lakes.

• 국제학술발표논문집
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• The 7th International Conference on Construction Engineering and Project Management Summit Forum on Sustainable Construction and Management
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• pp.62-72
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• 2017

In this study, liner unit root tests and panel unit root tests to the ratio of city to regional house price were applied to examine the ripple effects across 28 cities in the Yangtze River Delta region. Then invert LM unit root tests with two structural breaks for 10 representative cities were conducted. The results showed that there is overwhelming evidence of the existence of ripple effect in the Yangtze River Delta region, while segmentation is restricted to a small group of cities in which there is no long-run relationship with the Yangtze River Delta region average; compared to no- and one-break case, there is overwhelming evidence of a ripple effect with the LM test with two structural breaks. Furthermore, the results of the Granger causality test showed that changes in house prices in Shanghai, Nanjing and Hangzhou have led to changes in house prices in other cities. The findings of this research make certain contributions to the improvements of research system of ripple effect among regional house prices in the Yangtze River Delta Region,and could be referenced by other markets of other cities.

• 한국습지학회지
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• 제16권4호
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• pp.463-476
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• 2014

하천변에 위치한 하도습지는 치수사업을 통한 치수가치와 하도습지의 생태적 보전가치가 대립함으로써 사회적 갈등을 야기하고 있다. 본 연구에서는 하도습지의 치수가치와 생태가치에 대한 경제성 분석을 통해 두 가치 모두의 중요성을 확인하였으며, 이러한 결과를 바탕으로 치수안전과 생태보전을 고려한 하도습지 관리방안을 제시하고자 하였다. 이를 위해 다차원 홍수피해산정방법(MD-FDA)과 조건부가치측정법(CVM)을 이용하여 임진강 하구유역의 연평균 홍수피해액과 하도습지의 생태보전가치를 산정하였다. 분석결과, 임진강 하구지역은 치수사업도 필요하고, 하도습지의 생태적 보존가치 역시 중요하여 단계별 치수사업과 하도습지의 보호를 위한 관리방안 수립이 필요한 것으로 나타났다. 그 결과 임진강 하도습지는 지속적으로 퇴적이 발생하고 홍수위가 상승하는 지역으로 분류되었다. 이를 바탕으로 임진강 하구는 하천정비사업 시 치수안전과 생태보전을 함께 확인하며 진행하는 것이 필요하고, 생태계 교란을 최소화하기 위한 단계적인 하천정비시행이 바람직할 것으로 판단되었다. 본 연구에서 도출된 결과를 토대로 향후 치수사업과 하도습지의 보존을 함께 고려한 하천관리방안 수립을 위한 기초자료로 활용 될 수 있을 것으로 기대된다.

• 한국수자원학회:학술대회논문집
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• 한국수자원학회 2012년도 학술발표회
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• pp.149-152
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• 2012

• 대한지리학회지
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• 제32권4호
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• pp.445-462
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• 1997

본 연구의 목적은 서울의 인접 지역인 포천군, 남양주시, 구리시를 흐르고 있는 왕숙천을 대상으로 하천유역의 자연 및 인문환경의 특징을 조사, 유역내 하천수질의 시${\cdot}$공간적 특성을 파악함과 아울러 이를 토대로 한 유역의 물환경 관리대책을 고찰하는데 있다. 본 연구 결과 다음과 같은 결론에 도달하였다.1. 관측항목 중 유역의 자연적 시${\cdot}$공간 특성을 가장 잘 반영하고 있는 것은 수온으로 판명되었다. 왕숙천의 월별 하천본류의 수온은 전반적으로 상류가 낮고 하류가 높게 관측되었다. 2. 하천 본류의 pH 및 EC, TDS 값은 각각의 지류의 값에 크게 영향을 받는 인위적 수질요소이다. 특히, EC와 TDS 값은 지류의 오염물질 유입으로 인한 본류의 영향을 파악하는 가장 좋은 수질조사 항목으로 판단되었다. 3. 왕숙천에서 측정된 COD 값을 호소의 수질 환경기준에 적용해 보면 대다수의 지점에서 5급수의 수질을 보이고 있어 유역내의 하천수가 심각하게 오염되어 있는 것으로 나타났다. 4. 왕숙천변에 거주하고 있는 사람들의 왕숙천에 대한 인지도는 하천의 상류와 중${\cdot}$하류의 지역별로 크게 차이가 있는 것으로 나타났으며, 왕숙천의 유역환경을 개선시키기 위하여 지역주민들의 하천에 대한 인지도를 높이고 친환경적 하천관을 배양시키는 정책이 실시되어야 한다.

• 한국물환경학회지
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• 제37권1호
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• pp.32-46
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• 2021

South Korea has been divided into quantities and water quality, and due to a revision of the Government Organization law in June 2018, the controversial water management system was integrated into the Ministry of Environment. The total Maximum Daily Loads System has been called the flower of water quality control, and since 2004, all three major river systems which have been introduced into the Han River system, despite its various difficult environments, and subsequently leading to all of the four major rivers undergoing obligatory implementation since 2013. Currently, the target TMDL (Han River Phase 1 and Other Water Systems Phase 3) for the 2020 stage has been implemented. The domestic TMDL established a basic plan for calculating the load which complies with the unit watershed's target water quality, as well as an implementation plan for annual load management, both which have been institutionalized in order to evaluate load compliance on a repeated annual basis. Local governments ask external organizations to conduct investigations every year in order to assess the transition, which thereby requires tens of millions of won every year. Therefore, an assessment and management model that can be easily operated at the TMDL personnel level is required. In this study, when the Han river Water System TMDL was implemented in earnest, we confirmed the the water quality improvement effect when TMDL was introduced to major inflow tributaries (TancheonA, JungnangA, AnyangA) under the Seoul City's jurisdiction through the use of the total amount control unit basin evaluation technique. By presenting customized management measures, we propose the guidelines that are necessary for determining more effective water environmental policies.

• 지역연구
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• 제37권1호
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• pp.45-61
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• 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.

• 한국물환경학회지
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• 제26권2호
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• pp.208-214
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• 2010

This study aimed at the introduction of desktop method for assessment of environmental flows developed by International Water Management Institute (IWMI) recently and its application to Geum river basin. This scheme simulated the influence on aquatic ecosystem caused by watershed development and in turn the decrease of water quantity keeping the river's own flow regime. It was found to be as very effective method although it had simple structure. Flow duration curves for different environmental classes at Sutong and Gongjoo sites were estimated according to the natural conditional scenario of Geum river basin and the results were relatively compared well with the previous studies. The behaviors of monthly average runoff time series of both sites showed the level of A class. The results of this study would provide the fundamental data to establish the future plans of monitoring or management for aquatic ecosystem of Geum river basin.

• 한국수자원학회:학술대회논문집
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• 한국수자원학회 2010년도 학술발표회
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• pp.933-937
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• 2010

This study aimed at the introduction of desktop method for assessment of environmental flows developed by IWMI(International Water Management Institute) recently and its application to Geum river basin. This scheme simulated the influence on aquatic ecosystem caused by watershed development and in turn the decrease of water quantity keeping the river's own flow regime. It was found to be as very effective method although it had simple structure. Flow duration curves for different environmental classes at Sutong and Gongjoo sites were estimated according to the natural conditional scenario of Geum river basin and the results were relatively compared well with the previous studies. The behaviors of monthly average runoff time series of both sites showed the level of A class. The results of this study would provide the fundamental data to establish the future plans of monitoring or management for aquatic ecosystem of Geum river basin.

• 한국물환경학회지
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• 제28권6호
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• pp.866-881
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• 2012

Han River is a complex water system consisting of many lakes. The water quality of Lake Paldang is significantly affected by incoming flows, which are the South and North branches of the Han River, and the Kyungan Stream. In order to manage the water quality of the Lake Paldang, we should consider the entire water body where the incoming flows are included. The objectives of this study are to develop an integrated river and lake modeling system for Han River system using a multidimensional dynamic model and evaluate the model's performance against field measurement data. The integrated model was calibrated and verified using field measurement data obtained in 2007 and 2008. The model showed satisfactory performance in predicting temporal variations of water level, flow rate and temperature. The Root Mean Square Error (RMSE) for water temperature simulation were $0.88{\sim}2.13^{\circ}C$ (calibration period) and $1.05{\sim}2.00^{\circ}C$ (verification period) respectively. And Nash-Sutcliffe Efficiency (NSE) for water temperature simulation were 1089~0.98 (calibration period) and 0.90~0.98 (verification period). Utilizing the validated model, we analyzed the spatial and temporal distributions of temperature within Han River system. The variations of temperature along the river reaches and vertical thermal profiles for each lakes were effectively simulated with developed model. The suggested modeling system can be effectively used for integrated water quality management of water system consisting of many rivers and lakes.