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REFERENCE LINKING PLATFORM OF KOREA S&T JOURNALS
> Journal Vol & Issue
Journal of Environmental Impact Assessment
Journal Basic Information
Journal DOI :
Korean Society of Environmental Impact Assessment
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Volume & Issues
Volume 14, Issue 6 - Dec 2005
Volume 14, Issue 5 - Oct 2005
Volume 14, Issue 4 - Aug 2005
Volume 14, Issue 3 - Jun 2005
Volume 14, Issue 2 - Apr 2005
Volume 14, Issue 1 - Feb 2005
Selecting the target year
Development of Pollutant Loading Estimation System using GIS
Ham, Kwang-Jun ; Kim, Joon-Hyun ; Shim, Jae-Min ;
Journal of Environmental Impact Assessment, volume 14, issue 3, 2005, Pages 97~107
The purpose of this study is to develop a system, which estimates watershed pollutant loading rate through the combination of GIS and computational mode. Also, the applicability of this study was estimated by the application of the above system for Chuncheon City. The detailed results of these studies are as follows; The pollutant loading estimation system was developed for more convenient estimation of pollutant loading rate in watershed, and the system load was minimized by the separation of estimation module for point and non-point source. This system on the basis of GIS is very economical and efficient because it can be applied to other watershed with the watershed map. System modification is not needed. The pollutant loading estimation system for point source was developed to estimate the pollutant loading rate in watershed through the extraction of the proper data from all districts and yearly data and the execution of spatial analysis which is main function of GIS. From the verification result of spatial analysis, real watershed area and the administrative districtarea extracted by spatial analysis were
, respectively. It shows that the spatial analysis results were very exact with only 0.001% error. The pollutant loading estimation system for non-point source was developed to calculate the pollutant loading rate through the overlaying of land-use and watershed map after the construction of new land-use map using the land register database with most exact land use classification. Application result for Chuncheon City shows that the proposed system results in one percent land use error while the statistical method results in five percent. More exact nonpoint source pollutant loading was estimated from this system.
Comparative Efficiency Evaluation of Air Cleaners for Improving Indoor Air Quality
Na, Kyung-Ho ; Son, Jin-Seok ; Sung, Kijune ; Jang, Young-Kee ;
Journal of Environmental Impact Assessment, volume 14, issue 3, 2005, Pages 109~115
This study was conducted to evaluate the efficiency of indoor air cleaners and to inform how to select them correctly to the users. The efficiencies of removing suspended bacteria per hour were
for filter, wet, and complex type, respectively, which showed the complex type was the most efficient. The removal efficiencies of formaldehyde (HCHO) after two hours operation of air cleaners showed 88.3% and 81.1% for filter and wet type, respectively. The efficiency of complex type, with removal rate of 55.5~58.4%, was decreased after 30 minutes operation. Therefore, it is recommended to perform over 60 minutes when doing air cleaner certification test for HCHO removal efficiency. Generally, air cleaners having low wind volume showed higher efficiency. All tested air cleaners had no potential for removing of volatile organic compounds (VOCs), which is toxic substances, and it is desirable to develop a device which can control these substances. The results also confirmed that there was no ozone production from all tested air cleaners. And it is recommended to ventilate for 20 minutes every four hours to maintain 50% ventilation status.
A Study on the Reduction of Photochemical Ozone Concentration using OZIPR in Seoul Area
Hong, You-Deog ; Lee, Sang-Uk ; Han, Jin-Seok ; Lee, Suk-Jo ; Kim, Shin-Do ; Kim, Yoon-Shin ;
Journal of Environmental Impact Assessment, volume 14, issue 3, 2005, Pages 117~126
This study was executed to know the best matrix of photochemical ozone reduction in the metropolitan area. For this object, we used the OZIPR(Ozone Isopleth Plotting Package for Research) model for comparing the effectiveness of VOCs and NOx amount variation about the ozone creation. Among the various ozone reduction scenarios, 50% reduction of VOCs from organic solvent and road traffic respectively was the best matrix for ozone reduction. Although it needs more accurate assessment and confirmation of VOCs and NOx emission amount data, according to existing data, the control of VOCs is the best way for photochemical ozone reduction in Seoul.
Detection of Laver Aquaculture Site of Using Multi-Spectral Remotely Sensed Data
Jeong, Jongchul ;
Journal of Environmental Impact Assessment, volume 14, issue 3, 2005, Pages 127~134
Recently, aquaculture farm sites have been increased with demand of the expensive fish species and sea food like as seaweed, laver and oyster. Therefore coastal water quality have been deteriorated by organic contamination from marine aquaculture farm sites. For protecting of coastal environment, we need to control the location of aquaculture sites. The purpose of this study is to detect the laver aquaculture sites using multispectral remotely sensed data with autodetection algorithm. In order to detect the aquaculture sites, density slice and contour and vegetation index methods were applied with SPOT and IKONOS data of Shinan area. The marine aquaculture farm sites were extracted by density slice and contour methods with one band digital number(DN) carrying 65% accuracy. However, vegetation index algorithm carried out 75% accuracy using near-infra red and red bands. Extraction of the laver aquaculture site using remotely sensed data will provide the efficient digital map for coastal water management strategies and red tide GIS management system.
Characteristics of Meteorological Environment Variation Before and After Construction of Nak-dong River Estuary Barrage
Jeon, Byung-Il ;
Journal of Environmental Impact Assessment, volume 14, issue 3, 2005, Pages 135~145
This study was conducted to investigate the characteristics of meteorological environment variation before and after construction of Nak-dong river estuary barrage. We used meteorological data(air temperature, precipitation, relative humidity, visibility, wind) at Gimhae airport meteorological station. The construction of river estuary barrage can change climate at the neighboring districts and influence human's health and vegetable. The construction of Nakdong river estuary barrage brought rise of temperature, decrease of relative humidity and increase of poor visibility frequency.