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REFERENCE LINKING PLATFORM OF KOREA S&T JOURNALS
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Journal of Korean Society of Rural Planning
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Korean Society of Rural Planning
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Volume & Issues
Volume 7, Issue 2 - Aug 2001
Volume 7, Issue 1 - Mar 2001
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A Water Environment Management and Evaluation Systems for a Small Watershed (I) - System formulation and Development -
Kang, Moon-Seong ; Park, Seung-Woo ; Im, Sang-Jun ;
Journal of Korean Society of Rural Planning, volume 7, issue 1, 2001, Pages 3~13
In an effort to effectively manage and evaluate a water environment at a small watershed, a decision support system for a water environment management and evaluation has been developed. This paper described the overall features and functions of the water environment management and evaluation systems (WEMES) for environmental management, conservation, and evaluation at a small watershed. WEMES consisted of fore subsystems: data, simulation model, evaluation model, and user interface. Each of the systems were briefly described. And special features like simulation and evaluation models were also introduced.
A Water Environment Management and Evaluation Systems for a Small Watershed (II) - Operation and Applications -
Kang, Moon-Seong ; Park, Seung-Woo ; Her, Young-Gu ;
Journal of Korean Society of Rural Planning, volume 7, issue 1, 2001, Pages 15~25
This paper described the overall operations and applications of the water environment management and evaluation systems (WEMES) for environmental management, conservation, and evaluation for a small watershed. WEMES was to be applied with field data from small watersheds ranging from 0.4 to 29.79km2 in size which have steep topography and complex landuses. WEMES was a computer aided decision support system, that was comprised of the database subsystem, the simulation model subsystem, the environmental evaluation model subsystem, and the graphic user interface subsystem that visualizes the simulated results. The water environment management and evaluation with WEMES was successfully performed.
Prediction of the Pollutant Loading into Estuary Lake according to Non-cultivation and Cultivation conditions of Reclaimed Tidal Land
Yoon, Kwang-Sik ; Choi, Soo-Myung ; Yang, Hong-Mo ; Han, Kuk-Heon ; Han, Kyung-Soo ;
Journal of Korean Society of Rural Planning, volume 7, issue 1, 2001, Pages 27~36
Estimation of current and future loading from watershed is necessary for the sound management of water quality of an estuary lake. Pollution sources of point and non-point source pollution were surveyed and Identified for the Koheung watershed. Unit factor method was used to estimate potential pollutant load from the watershed of current conditions. Flow rate and water qualify of base flow and storm-runoff were monitored in the main streams of the watershed. Estimation of runoff pollutant loading from the watershed into the lake in current conditions was conducted by GWLF model after calibration using observed data. Prospective pollutant loading from the reclaimed paddy fields under cultivation conditions was estimated using the modified CREAMS model. As a result, changes of pollutant loading into estuary lake according to non-cultivation and cultivation conditions of reclaimed tidal land were estimated.
Landscape Information Visualization of Landscape Potential Index in Hilly Openspace Conservation of Urban Fringe Area
Cho, Tong-Buhm ;
Journal of Korean Society of Rural Planning, volume 7, issue 1, 2001, Pages 37~48
The purpose of this study is to suggest the landscape potential index for visualizing landscape information in the conservation of hilly landscape in urban fringe. For the visual and quantitative approach to topological landscape assessment, numerical entity data of DEM(digital elevation model) were processed with CAD-based utilities that we developed and were mainly focused on analysis of visibility and visual sensitivity. Some results, with reference in assessing greenbelt area of Eodeung Mt. in Gwangju, proved to be considerable in the landscape assessment of suburban hilly landscapes. 1) Since the viewpoints and viewpoint fields were critical to landscape structure, randomized 194 points(spatially 500m interval) were applied to assessing the generalized visual sensitivity, we called. Because there were similar patterns of distribution comparing to those by 56 points and 18 Points given appropriately, it could be more efficient by a few viewpoints which located widely. 2) Regressional function was derived to represent the relationships between probabilities of visibility frequency and the topological factors(topological dominance, landform complexity and relational aspect) of target field. 3) Visibility scores of each viewpoint were be calculated by summing the visual sensitivity indices within a scene. The scores to the upper part including ridge line have been more representative to overall distributions of visual sensitivities. Also, with sum of deviations of sensitivity indices from each single point's specific index to the weighting values of view points could be estimated rotationally. 4) The deviational distributions of visual sensitivity classes in the topological unit of target field were proved to represent the visual vulnerability of the landform. 5) Landscape potential indices combined with the visual sensitivity and the DGN(degree of green naturality) were proposed as visualized landscape information distributed by topological unit.
Development and Application of the Questionnaire Design/Analysis System for Village Appraisals
Choi, Soo-Myung ; Hwang, Han-Choel ; Han, Kyung-Soo ; Cho, Young-Jae ;
Journal of Korean Society of Rural Planning, volume 7, issue 1, 2001, Pages 49~59
This study aimed at developing the through processing system of questionnaire works for public participating village appraisals. With the data-base system of standardized questions menu pool developed in the previous study, the system was developed using Visual Basic 6.0 and Access 97 and consisted of 3 subsystems; Questionnaire Design, Data-in, Analysis/Presentation. Using the system developed in this study, questionnaire works for village appraisal was carried out at the 3 sample villages and processed. The questionnaire results were compared with resources evaluation results from another past study at the same sample villages, which showed much accordance between them.
Numerical Evaluation of Tidal Characteristic Changes after Saemangeum Sea-dike Closing
Park, Chang-Kyu ; Lee, Nam-Ho ;
Journal of Korean Society of Rural Planning, volume 7, issue 1, 2001, Pages 61~76
During the performance of large scale tidal land reclamation project along the coast line, the construction of large scale structures such as sea-dikes, closing estuaries will induce big changes of near-shore hydraulic behavior. In this paper, its is aimed to verify the change of tide and currents after the construction of sea-dike of the Saemangeum project along the coast line. Numerical scale model "TRISULA" which development by Delft Hydraulics in the Netherlands was used. "TRISULA" is adopting the finite difference numerical scheme, and mostly using for hydro-dynamic solution along the sea and estuaries. Model boundary is covering
Km and constructed with
grids. Outer side boundary is divided 48 sections, and input 37 tidal components are gained from another big scale numerical "Yellow Sea" model. Model calibrations & verifications were performed th field tide & current datas which were measured along sea-dike alignment during Aug.
. 1999. And then, numerical simulation with the tide condition dated 17 Apr. 1999 was performed with & without sea-dike construction condition for the comparison. Evaluated boundary is 20 km out-side from sea-dike alignment. Four cross lanes were set up, each of lane contains 3 points, for the comparison of sea-dike construction effects. Results showing the tidal amplitude is reducing approximately 20 cm after the construction of sea-dike during spring tide condition, amplitude 6.9m. Currents after construction of sea-dikes along the alignment, the northern part shows 50%(inner), 90%(outer) and the southern part shows 10%(inner) 50%(outer) of the currents before construction.
Application of GWLF Model to Predict Watershed Pollutant Loadings
Jang, Jung-Seok ; Lee, Nam-Ho ;
Journal of Korean Society of Rural Planning, volume 7, issue 1, 2001, Pages 77~88
In order to evaluate the applicability of GWLF model which can efficiently estimate non-point and point source pollutant loadings in rural watershed including urban district, the model was applied to an experimental watershed. The model was calibrated using observed data such as daily runoffs, sediment yields, T-N, and T-P. Simulated daily runoffs and sediment yields by the model using calibrated parameters were in food agreement with the observed data. There were difference between the simulated and observed nutrient loading which was considered resonable. The simulated results by the model showed that T-N, T-P and sediment yields were dependent on the amount of stream runoff discharge and land use. GWLF model is believed to applicable to estimate amount of pollutant loading of non-point source pollution for the water qualify control of agricultural watersheds.
Water Quality of the Agricultural Reservoirs in Boryung Watershed
Choi, Jin-Kyu ; Son, Jae-Gwon ; Koo, Ja-Woong ; Kim, Young-Ju ;
Journal of Korean Society of Rural Planning, volume 7, issue 1, 2001, Pages 89~98
This study was carried out to provide the basic informations for the water quality management in Boryung fresh water reservoir watershed. Four agricultural reservoirs were selected and the water qualify of the reservoirs were investigated from November 1998 to December 2000, periodically. Including storage rate, temporal variation of water quality constituents such as water temperature, pH, EC, total nitrogen, total phosphorus were analysed. The result showed that pH ranged
, respectively. And, total-N concentration affected by the livestock wastes and agricultural activity ranged from 0.21 to 4.66mg/L and which was almost over the agricultural water quality standard(1.0mg/L). Total-P ranged from 0.001 to 0.080mg/L as lower than the agricultural water quality standard(0.1mg/L).