• 제목/요약/키워드: Urban rivers

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Application of Eco-hydraulics Principles in Rehabilitation of Urban River System

  • Meiyan, Feng;Jung, Kwansue
    • 한국수자원학회:학술대회논문집
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    • 한국수자원학회 2018년도 학술발표회
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    • pp.446-446
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    • 2018
  • The urban rivers have unique hydraulic characteristics between natural rivers and artificial canals. These hydraulic characteristics determine the characteristics of urban rivers with small environmental capacity and fragile ecosystems. With the development and utilization of natural resources, the pollutants that have been produced enter the river through different channels, which seriously damages the urban river ecosystem. Therefore, how to restore contaminated water to a normal state and reproduce a natural, self-regulating ecosystem is one of the most concerned issues in recently. Eco-hydraulics is a cross-disciplinary subject of hydraulics biology and ecology. It is closely related to the protection of rivers, wetlands, and ecological self-repair. In this study, The basic principle of eco-hydraulics is concisely described and its approaches to protection and rehabilitation of river are introduced. The conception of establishing gardenesque eco-pond for urban use is suggested. The strategies including changing the hydrodynamic features of rivers, adjusting the breeds and species and constructing the gardenesque eco-pond for improving the exist ing urban rivers are proposed. It provides scientific information and guidance for the restoration of rivers and wetlands by studying the close relationship between river hydraulic characteristics, currents, and rivers and ecosystems.

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도시 하천 및 수공간 활용에 대한 주민의식 조사 및 분석 - 공원녹지기본계획 수립을 위한 주민의식조사를 기반으로 - (Survey and Analysis of Residents' Awareness on the Use of Urban Rivers and Water Spaces -Based on Residents' Awareness Survey to Establish Park Green Space Basic Plan-)

  • 서정영
    • 한국환경과학회지
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    • 제33권1호
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    • pp.9-16
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    • 2024
  • This study analyzed a survey of residents' awareness of rivers and water spaces that reflected residents' awareness in order to establish a basic park green space plan. Through this, the perception and requirements of rivers and water spaces were analyzed and important information was provided for urban planning and environmental management. As a result of analyzing residents' neutral satisfaction with rivers and their opinions on the frequency of use, role, and purpose, it was confirmed that rivers are recognized as an important part of urban life and contain the potential for development for a better urban environment. . However, considering the dissatisfied response and the relatively low frequency of use, we came to the conclusion that better urban planning and management is needed to meet the needs of residents by improving the river environment and providing various facilities. Based on this, city managers should focus on river management and improvement by actively collecting residents' opinions. Through analysis of the causes of dissatisfied responses, measures such as improving the environment around rivers and waste management should be prepared, and a broad strategy for environmental conservation and utilization should be established by reflecting the diverse expectations and demands of residents. These ongoing efforts are expected to have a positive impact on the sustainability of the city and improvement of residents' quality of life. Additionally, the results of this study will be able to contribute to establishing policies for urban planning and environmental improvement through similar research and analysis in other regions.

Ecological Consideration for Restoration of the Degraded Urban River

  • Lee, Chang-Seok;You, Young-Han
    • 한국생태학회:학술대회논문집
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    • 한국생태학회 2002년도 VIII 세계생태학대회
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    • pp.113-118
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    • 2002
  • Vegetation and riverine structures were compared among urban and several semi-natural rivers by applying direct gradient analysis and ordination method. Urban rivers showed different species composition from the semi-natural ones. Species composition of semi-natural rivers depended on the geographical positions, such as the upstream, midstream, and downstream and on micro-topographies, such as the waterside, flooding bed, and embankment. Semi-natural rivers showed gentle change in micro-topography, whereas urban one did not so. Our restoration plan to improve the ecological quality of the degraded urban river by imitating semi-natural river was prepared based on those data.

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Ecological Consideration for Restoration of the Degraded Urban River

  • Lee, Chang-Seok;Yon, Young-Han
    • The Korean Journal of Ecology
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    • 제25권4호
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    • pp.247-252
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    • 2002
  • Vegetation and riverine structures were compared among urban and several semi-natural rivers by applying direct gradient analysis and ordination method. Urban rivers showed different species composition from the semi-natural ones. Species composition of semi-natural rivers depended on the geographical positions, such as the upstream, midstream, and downstream and on micro-topographies, such as the waterside, flooding bed, and embankment. Semi-natural rivers showed gentle change in micro-topography, whereas urban one did not so. Our restoration plan to improve the ecological quality of the degraded urban river by imitating semi-natural river was prepared based on those data.

도시하천의 공간이용 평가 -갑천과 유등천을 중심으로- (Evaluation of Urban Riverine Area Usage -Gapcheon and Yudungcheon in Daejeon City -)

  • 장창래;김정곤;이광만
    • 한국환경복원기술학회지
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    • 제9권4호
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    • pp.1-12
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    • 2006
  • The usages of urban riverine areas for the Gapchoen and Yudungcheon in Daejoen City were evaluated by analyzing riverbed characteristics and water quality and by surveying the status of the floodplain usage including questionnaires of people visiting the rivers. Both rivers appear to be stable with insignificant bed changes as the riverbeds are dominated by gravels. Water qualities of both rivers have been improved significantly over the past decade although there are quite large seasonal fluctuations, which is common in most rivers in Korea. The results of floodplain usage analyses show that Gapcheon is dominated with static uses (>70%) such as promenades and resting facilities, while Yudungcheon by dynamic uses (>44%) such as sports facilities. Overall, both rivers require better plans for riverine area usage management considering a balance between the dynamic uses and the static uses such as natural observation places for education and habitats for birds and fish in the rivers. The questionnaire survey results indicate that overall the present status of both rivers are satisfactory and that water quality improvement is one of the key factors to enhance the value of the riverine areas. Future river restoration should be conducted by taking into account the characteristics of urban rivers in harmony with surrounding natural sceneries.

도시하천의 보전 및 이용에 관한 주민과 전문가 인식 분석 (An Analysis of Residents and Experts' Perception on Conservation and Utilization of Urban Rivers)

  • 이애란
    • Ecology and Resilient Infrastructure
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    • 제9권2호
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    • pp.124-129
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    • 2022
  • 도시하천은 이치수의 기능과 함께 생태적으로 건강한 도시환경을 제공함으로써 시민의 삶에 핵심축이 되어오고 있다. 반면 도시 고밀화에 의한 기반시설 확장 등과 더불어 지역의 하천에 대한 보전과 이용 측면에서 상충이 발생하고 있다. 지속가능한 하천을 위해서는 적절한 합의와 조율이 필요한 실정이다. 본 연구는 주민참여 협치예산을 통한 주민 제안 공론화의 장에서 나타난 다양한 의견을 분석하고자 한다. 은평구의 6개 하천을 대상으로 이용자 인식 조사와 전문가 인터뷰를 실시하였다. 이를 통해 도시생활권 지방하천과 소하천의 안정적이고 지속가능한 보전과 적절하고 균형 있는 이용 방안을 제안하였다.

도시하천의 이용행태와 물리적 요소에 대한 만족도 (Using Behavior and satisfaction of Physical factors of Urban Rivers)

  • 김용수;이동명;박찬용
    • Current Research on Agriculture and Life Sciences
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    • 제24권
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    • pp.17-22
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    • 2006
  • The purpose of this study is to plan, design and reflect to the future naturalization of the urban rivers by using the literatures, field survey results and aerial photography of Milyang River as the case regarding the effect of physical factors of urban rivers on landscape, defining those factors as Sammon fine forest, outdoor stage, Youngnamlu, RC stadium, stroll roads and bicycle roads, artificial island, outdoor swimming pool and sculpture park, and by suggesting the specific characteristics of the landscape according to those factors. The questionnaire survey was made to understand the users' satisfaction and attributes. The statistical analysis was applied, the frequency analysis and percentage calculation were used to find out the citizenship and perception toward the physical factors, and paired-sample T test to compare the average.

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도시 내 공원과 하천의 기온변화율과 기온완화효과에 관한 연구 (A Study on the Temperature Variation Rate and Temperature Controlling Effect of Parks and Rivers in a City)

  • 이강국;김태우;서원덕;홍원화
    • KIEAE Journal
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    • 제11권3호
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    • pp.3-9
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    • 2011
  • For urban development, natural covering area such as urban green or river is more rapidly reducing than artificial surface covering area like concrete or asphalt, so thermal environment in a city is being drastically deteriorated. Recently, since people recognize the importance of parks or rivers in a city which play roles as an environmental buffer in it, many studies and policies consider how to improve the life quality of citizens and urban environment. This study aims to examine the status of thermal environment variation in the parks and rivers of the city which is the subject of this research and provide foundational data for urban environment plans through research on temperature variation rate and temperature controlling effect.

도시하천의 자연도평가 및 타당성검토에 관한 연구 (A Study on Naturalness Assessment and Feasibility of Urban Stream)

  • 김광수;안승섭
    • 한국환경과학회지
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    • 제23권1호
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    • pp.143-152
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    • 2014
  • The results which are from naturalness assessment and visual assessment was examined to accomplish a classification, a conclusion, a comparison and an analysis. Also statistical test was examined to identify applicability of the survey to other rivers according to the result of visual assessment. As a result of naturalness assessment and visual assessment, evaluation rate of Geumho river is the highest rank of the grade as 2.5. Also t-test was examined to apply items of visual assessment at other rivers through differences in means of river naturalness rates from which visual assessment results. Most of differences in means of river naturalness rates are significant. Thus assessment criteria can be applied to other rivers to find out unique characteristics because each item has independent characteristics.

Molecular Detection of Human Enteric Viruses in Urban Rivers in Korea

  • Lee, Cheong-Hoon;Kim, Sang-Jong
    • Journal of Microbiology and Biotechnology
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    • 제18권6호
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    • pp.1156-1163
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    • 2008
  • We performed RT-nested PCR to study the distribution of human enteric viruses in urban rivers in Korea. During 2002-2003, water samples were collected from four rivers in Gyeonggi Province, South Korea. Among 58 samples, 45 (77.6%), 32 (55.2%), 12 (20.7%), 2 (3.4%), 4 (6.9%), and 4 (6.9%) showed positive results with adenoviruses (AdVs), enteroviruses (EVs), reoviruses (ReVs), hepatitis A viruses (HAVs), rotaviruses (RoVs), and sapoviruses (SVs), respectively. According to the binary logistic regression model, the occurrence of each enteric virus, except ReVs and HAVs, was not statistically correlated with the water temperature and levels of fecal coliforms (P<0.05). AdVs were most often detected; only 4 samples (6.9%) were negative for AdVs while positive for other enteric viruses in the studied sites. Our results indicated that monitoring human enteric viruses is necessary to improve microbial quality, and that AdVs detection by PCR can be a useful index for the presence of other enteric viruses in aquatic environments.