• Title/Summary/Keyword: Urban rivers

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

  • Meiyan, Feng;Jung, Kwansue
    • Proceedings of the Korea Water Resources Association Conference
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    • 2018.05a
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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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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- (도시 하천 및 수공간 활용에 대한 주민의식 조사 및 분석 - 공원녹지기본계획 수립을 위한 주민의식조사를 기반으로 -)

  • Seo, Jung-young
    • Journal of Environmental Science International
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    • v.33 no.1
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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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    • 2002.08a
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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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    • v.25 no.4
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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.

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

  • Jang, Chang-Lae;Kim, Jeongkon;Lee, Gwangman
    • Journal of the Korean Society of Environmental Restoration Technology
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    • v.9 no.4
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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.

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

  • Lee, Ai Ran
    • Ecology and Resilient Infrastructure
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    • v.9 no.2
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    • pp.124-129
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    • 2022
  • Urban river have been a key pillar in citizens' lives through the healthy urban environment of ecological nature along with the function of this dimension. On the other hand, conflicts are occurring in terms of conservation and use of rivers in the region along with the expansion of infrastructure due to urban densification. Appropriate agreement and coordination are needed for sustainable streams. This study aims to analyze various opinions through public discussion of residents' proposals through the resident participation cooperation budget. User awareness surveys and expert interviews were conducted on six rivers in Eunpyeong-gu. Through this, stable and sustainable preservation of local and small rivers and appropriate and balanced use measures were proposed.

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

  • Kim, Yong-Soo;Lee, Dong-Myeong;Park, Chan-Yong
    • Current Research on Agriculture and Life Sciences
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    • v.24
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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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A Study on the Temperature Variation Rate and Temperature Controlling Effect of Parks and Rivers in a City (도시 내 공원과 하천의 기온변화율과 기온완화효과에 관한 연구)

  • Lee, Kang-Guk;Kim, Tae-Woo;Seo, Won-Duck;Hong, Won-Hwa
    • KIEAE Journal
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    • v.11 no.3
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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.

Rivers as Counter-monuments in Manila and Singapore: The Urban Poor's Remembrance in Liwayway Arceo's Canal de la Reina (1972) and Suchen Christine Lim's The River's Song (2013)

  • Dania G. Reyes;Jose Monfred C. Sy
    • SUVANNABHUMI
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    • v.16 no.2
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    • pp.185-211
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    • 2024
  • Southeast Asian cities like Manila, the Philippines, and Singapore have witnessed economic, political, and cultural changes over the years, especially after periods of colonization. States control their urban fabric-that is, its organization, planning, and design of cities-and thus dictate the flow of capital and forces of labor. Urban poor settlements, an offshoot of capital accumulation, are (re)moved around these cities in accordance with governing visions of development. For populations that are forced into changes brought about by urban development, practices of remembering are also controlled by dominant powers. These "monuments" are established in/as spaces to oblige an image of membership into a society ruled by such powers. Nevertheless, alternate sites of remembering counter these monumental spaces. This paper takes an interest in two novels that feature such places. Liwayway Arceo's Canal de la Reina (1972) and Suchen Christine Lim's The River's Song (2013) both figure rivers in Manila and Singapore, respectively. The eponymous river is the central axis of Canal de la Reina, entangled in class conflict and swift urban change in post-Commonwealth Manila. In The River's Song, the famous Singapore River provides a refuge for reminiscing about Singapore before the city-state's independence. Comparing these novels to what Filipino comparatist Ruth Jordana Pison calls fictional "counter-memory," we argue that their rivers remember personal and embodied experiences eliminated from hegemonic accounts of the city. Thus, they function as what we call "counter-monuments" for the urban poor marginalized in the history of the Philippines and Singapore.

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

  • Kim, Kwang-Su;Ahn, Seung-Seop
    • Journal of Environmental Science International
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    • v.23 no.1
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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.