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2009, Vol.18, No.4

  • 1.

    The Impacts of Power Plants on the Environment and Region - Focus on Incheon Area according to the 3rd Electric Support Action Plan -

    정창훈 | Pokarel, Rajib | Lee Hee-Kwan | 2009, 18(4) | pp.195~208 | number of Cited : 3
    Abstract PDF
    The power plant is well known to influence air pollution as well as emission of green house gas. Because of increasing demand on electricity, the government set up the electric support action plan every 2 years. In this research, the impacts of power plants on the environment and region was studied. The study was focused on the establishment of power plant in Incheon area based on the 3rd electric support action plan. According to the 3rd electric support action plan, almost 80% of power plant in metropolitan area is planned to be built in Incheon area. The main influences of establishment of power plant are emissions of SOx, NOx and PM and exceed the allocated local industry emissions, which means the emission allocation of other industry is difficult. In additions, the power plant exhaust CO2 much more than other types of fuel such as waterpower generation, atomic power station. Although several supports are given in local government, these cannot cover the whole cost due to establishment of power plant. Subsequently, this study suggest the additional policy based on local consideration is needed and the current electricity distribution system should be reconsidered fundamentally in the long term.
  • 2.

    Influence of Heavy Metal on Riparian Vegetation in Downstream Areas of Disused Metal Mines

    안태웅 | Lee, Joung An | oh Jong-Min | 2009, 18(4) | pp.209~218 | number of Cited : 0
    Abstract PDF
    The purpose of this study was to accumulation of the heavy metals by riparian vegetation throughout analysis of the heavy metal concentration in riparian vegetation, water, and sediment near mine drainage. According to analyzing concentration of the heavy metals in riparian vegetation, water, and sediment, the heavy metal was indicated at the leaf significantly. Compared with the concentration of sediment soil, the maximum concentration of the As, Cd, CN, Pb, Zn was higher 2.6, 2.6, 2.5, non-detect, and 1.5 times in leaf. Also those concentration have 9.6, 16.6, 2.5, 1.6, and 2.5 times in root. As the results, the author can know the sediment has a very relative to vegetation in mine drainage. because, the increasing of concentration of heavy metal in sediment gives the more accumulative concentration of heavy metal in vegetation. Compared with the concentration of conta minated site and non-contaminated site. As, Cd, CN, Pb, Zn the maximum concentration in sediment soil was higher 5.7, 258.1, 10.9, 370.0, and 298.3 times respectively. In case of vegetation, the maximum concentration of the As, Cd, CN, Pb, Zn was higher 5.6, 62.3, 5.0, non-detect, and 30.6 times in leaf. Also those concentration have 8.5, 63.3, 2.6, 60.7, and 62.1 times in root. In this study, the author can surmise that there indicated a lot of adsorption with the heavy metal concentration in contaminated mine drainage.
  • 3.

    Comparison of Land Surface Temperatures Derived from Surface Emissivity with Urban Heat Island Effect

    Jeong, Jong Chul | 2009, 18(4) | pp.219~227 | number of Cited : 10
    Abstract PDF
    Because of urban development and changed land cover types, It is very important to acquire pixel unit of land surface temperature(LST) information when the heat island effect(HIE) of regional area are investigated. The brightness temperature observed by satellite is very useful for assessing the pixel unit of LST distributions for the analysis of thermal environment problems of urban areas. Also, satellite land cover data are very useful to our understanding of surface conditions of study areas. In this study, brightness temperature information of Landsat TM thermal channel was analyzed and compared with land cover information of Jeon-ju city. The atmospheric correction of TM thermal channel carried out to explain for compared LST long term monitoring errors. However, simple estimation and evaluation methods to find a physical relationship between LST from satellite images and in-situ data are compared with reference channel emissivity.
  • 4.

    Analysis of the Effects of Bathymetry Data on Hydraulic Results - Daecheong Reservoir -

    Jae Il Lee | Se-Deok Seo | Ha, Sungryong | 2009, 18(4) | pp.229~234 | number of Cited : 0
    Abstract PDF
    A lot of research on the application of GIS has been conducted in the field of water quality management. The function of a geometric data acquisition for reservoir and river models, however, is not enough to satisfy multiuser’ convenience. CE-QUAL-W2 is a two-dimensional (2D) longitudinal/vertical hydrodynamic and water quality model for surface water bodies, modeling eutrophication processes such as temperature -nutrient -algae and sediment relationships. The purpose of this study is to analyzing which bathymetry information affects hydraulic results. There are consisted of three scenarios under consideration. The first scenario takes into account only tribatary type data such as Heoin and Okchen river. The second scenario, Heoin river constructs to tributary and Okchen river constructs by branch. Last scenario constructs Heoin and Okchen river by branch. The RMSE error results for the first, second and third scenarios are 0.61, 0.36 and 0.28 respectively.