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2012, Vol.21, No.2

  • 1.

    The biological assessment of water quality using DAIpo and TDI of Paju Ecological wetland

    김용진 | 김헌년 | Ok Min Lee | 2012, 21(2) | pp.229~238 | number of Cited : 3
    Abstract PDF
    This research was to examine the physiochemical factors and the attached diatoms of ecological wetland in Paju from August 2010 to May 2011. As a result of physicohemical water quality assessment, the water temperature did not fluctuate much due to ample riparian vegetation and aquatic plants growing at the site. Due to the effect of Han River Estuary, site 4,5 and 6 had high electricity conductivity. The BOD concentration was high at site 2, 3, and 4caused by decrease in water quantity and inflow of polluted water. At all sites, T-N and T-P concentrations ranged from eutrophic to hypertrophic status. At the downstream, the T-N and T-P concentrations decreased by inhabiting aquatic plant. Total of 98 taxa of attached diatoms were found. As for dominant taxa, Achnanthes convergens, A. minutissima, Gomphonema gracile, G. parvulum, Melosira varians, Navicula seminulum, N. minima, N. pseudolanceolata, Nitzschia amphibia,N. palea, Surirella minuta and Synedra ulna var. fragilariodes appeared. The result of biological assessment of water quality rated the sites B(suboptimal)~D(poor) during seasons of low water temperature, Fall and Winter, with DAIpo ranging 24.1~68.2 and TDI of 48.4~85.6. During Spring and Summer, all sites were rated D(poor) with DAIpo lower than or equal to 40,and TDI above or equal to 70. The biological assessment of water quality at the research site showed inferior TDI result compared to that of DAIpo.
  • 2.

    Parameters Estimation in Longwave Radiation Formula

    Hong-Yeon Cho | LEE, KHIL-HA | 이정미 | 2012, 21(2) | pp.239~246 | number of Cited : 0
    Abstract PDF
    Daily net radiation is essential for heat budget analysis for environmental impact assessment in the coastal zone and longwave radiation is an important element of net radiation because there is a significant exchange of radiant energy between the earth’s surface and the atmosphere in the form of radiation at longer wavelengths. However, radiation data is not commonly available, and there has been no direct measurement for most areas where coastal environmental impact assessment is usually most needed. Often an empirical equation, e.g., Penman and FAO-24 formulae is used to estimate longwave radiation using temperature, humidity, and sunshine hour data but local calibration may be needed. In this study, local recalibration was performed to have best fit from a widely used longwave equation using the measured longwave radiation data in Korea Global Atmospheric Watch Center (KGAWC). The results shows recalibration can provided better performance AE=0.23(W/m2) and RMSE=14.73(W/m2). This study will contribute to improve the accuracy of the heat budget analysis in the coastal area.
  • 3.

    A Study for Target Area Set-up Plan of Environmental Assessment

    선효성 | 최준규 | 2012, 21(2) | pp.247~254 | number of Cited : 0
    Abstract PDF
    This paper seeks for the set-up plan in the reasonable target area of environmental assessment. Domestically, the target area of environmental assessment is set up by the adjustment of opinion collection about the assessment scope result of an environmental factor. In a foreign country, the boundary of the target area for a development project is established with the environmental, economical, and social viewpoint based on the standard for significantly environmental impact. Based on the analysis of the present condition at home and abroad, the first set-up plan for the reasonable target area of environmental assessment is the preparation of the detailed term definition related to the target area of environmental assessment. The second is the arrangement of the judgement standard for significantly environmental impact. The quantitative assesment item can apply the present standard or regulation, and the qualitative assessment item can establish the standard based on factual and objective data. The last is the preparation of the reference material or the guideline for deciding the initial target area by the judgement standard and determining the final target area by opinion collection in the stage of scoping
  • 4.

    An Analysis of the Characteristics of Greenhouse Gas Emissions from the Daily Life Sector in Korea

    명수정 | 유동헌 | 2012, 21(2) | pp.255~264 | number of Cited : 0
    Abstract PDF
    The present study attempts to understand the emission pattern of greenhouse gases in people’s daily life through the estimation and analysis of the amount and characteristics of the greenhouse gases. Based on the survey of 1,000 people throughout the nation, monthly emission of greenhouse gases per-capita was estimated from their use of fuels, electricity, water,and personal and public transportation means in addition to their waste generation. In the case of personal car drivers, greenhouse gas emission was the greatest from their cars, followed by the emission from electricity, fuels, and public transportation. Emission from water consumption and waste generation was relatively low. Fuel consumption varied depending on the number of household members, their housing type, and the size of their living spaces. Results showed that single-person households emitted the largest amount of per-capita greenhouse gas while greenhouse gas emission from electricity was inversely proportional to the number of persons in a given household.
  • 5.

    Comparative Evaluation of Albedo Distribution according to Administrative Boundary Using MODIS Products

    김기열 | Um, Jung Sup | 2012, 21(2) | pp.265~277 | number of Cited : 0
    Abstract PDF
    This paper is primarily intended to present quantitative evidences for land surface albedo difference among seven metropolitan cites in South Korea. An empirical study for experimental sites was conducted to confirm how a standard MODerate Resolution Imaging Spectroradiometer (MODIS) instrument offers the viable method of measuring and comparing the regional heterogeneity of albedo among administrative districts. The metropolitan cities like Seoul located in dense building environment do result in much lower albedo than those exposed in much more sub-urban surface (e.g KwangJoo). These experimental results indicate that an urban surface such as building and road is a crucial explanatory variable for lower albedo. It is confirmed that the urban surface such as building and road could be employed as a proxy of the lower albedo burden in the metropolitan area. It is anticipated that this research output could be used as a valuable reference to confirm the potential of introducing the new concept of“ administrative districts specific albedo management”to support more scientific and objective decision-making in the process of GHG (Greenhouse Gas) reduction project.
  • 6.

    Characteristics of phytoncide production at the recreation forest in the Chungbuk area

    이상우 | 박덕규 | KIM KWANG YUL | 2012, 21(2) | pp.279~287 | number of Cited : 11
    Abstract PDF
    Phytoncide, which is emitted from plant against the insect species and bacterium, has been known as a health builder for human. Monoterpenes are major components of phytoncide. This study was conducted to investigate the distribution characteristics of phytoncide(monoterpene)depending on main species of tree, season, and meteorological factors in the 5 recreation forests, Chungbuk area. From the result of the study. it was shown that the annual concentrations of monoterpene are ranged in 236.0pptv - 698.3pptv depending on main species of tree. The variation of seasonal concentration was summer > spring > fall. The monoterpene concentration of coniferous forest was founded to be higher than broad leaved forest. In general, concentration of major components is a-pinene > b-pinene > camphene > d-limonene. The concentration of terpene was founded to be greatly influenced by the meteological factors such as insolation and temperature.
  • 7.

    The Prediction of Allowable Limit Distance about Human Body by Vibration Regulation

    송정언 | 홍웅기 | Kim,Seung-Gon | 2012, 21(2) | pp.289~296 | number of Cited : 1
    Abstract PDF
    The shock vibration such as machine vibration, blasting vibration etc. has effect on nearby structure as well as human body. The purpose of this study is to predict allowable limit distance of vibration about human body. First of all, vibration velocity such as PPV, PVS was measured by shock vibration experiment, and vibration level was calculated by conversion formula of vibration velocity. And then, allowable limit distance was analyzed by converted vibration level. The results are as follows : Firstly, the correlation coefficient of converted vibration level was over R=0.94, and vibration level caused by PVS was usually represented to high curve line. Secondly, the cross point of vibration level between ground and concrete condition was represented to 66.68dB(V), and allowable limit distance was represented to difference over three times when vibration regulation was raised from 65dB(V) to 80dB(V).
  • 8.

    A Study on Stigma Effect of Unwelcomed Facilities on Apartment Prices: A Case Study of Sang-gye Jugong Apartment Complexes in Nowon-gu, Seoul

    김철중 | Myung Gyu,SONG | 2012, 21(2) | pp.297~314 | number of Cited : 6
    Abstract PDF
    This study investigates the stigma effect of unwelcomed facilities on apartment prices through multiple regressions based on hedonic price method. The areas studied are Sang-gye Jugong 7, 9, 10 apartment complexes. The facilities analyzed are the Chang-dong Electric Subway Depot and the Do-bong Driver’s License Agency. The factors studied include the environmental variable (the elapsed time since the announcement of the re-location of these facilities), the view commanding, the distance from Chang-dong Depot, the distance from Dobong Driver’s License Test Course, the distance from neighboring facilities (subway stations,schools, parks and so on), the floor and each dwelling’s exclusive space. The data used are 2,822sales which have been collected since January 1, 2006. The facts found are as follows; first, the view commanding and the distance from the unwelcomed facilities are statistically significant. second, the environmental variable, ‘days’turns out to have a positive (+) and a negative (-) significant relationship with the dependent variable, ‘price’, in period II and period IV respectively. This implies that the stigma effect is real. third, there are significant differences in the influence on the apartment prices among the independent variables according to time. fourth, the stigma effect is estimated as 33,686,920Korean won in the case of the apartments which have the view commanding and 30,311,844won in the other case before the global economic crisis. This effect seems to decrease to 22,085,078 won after the crisis. These facts suggest that stigma effects could be considered as one of the benefits in the cost-benefit analysis of Chang-dong Depot re-location project to produce somewhat higher NPV or B/C ratio
  • 9.

    Washoff Characteristics of Non-point Source pollutants and Estimation of Unit Loads in Suburban Industrial Complex Areas Runoff

    Sung Jun Kim | 신선미 | 전용태 and 1other persons | 2012, 21(2) | pp.315~325 | number of Cited : 4
    Abstract PDF
    The characteristics of stormwater runoff and estimation of unit loads were examined in suburban industrial complex areas. During rainfall event, the peak concentrations occurred within the first 100 minutes after rainfall and then the highest concentration of NPS pollutants sharply decreased, showing strong first flush effect in suburban industrial complex. The cumulative load curves for NPS pollutants showed above the straight line, indicating that first flush effect occurred in suburban industrial complex. While the mean TSS, BOD, COD, TN and TP EMCs values were shown the highest values as 120.6 mg/L, 20.8 mg/L, 44.0 mg/L, 5.58mg/L and 1.46 mg/L respectively. Unit loads estimated from the EMCs were TSS 43.86kg/km2/day, COD 52.45kg/km2/day, BOD 24.79kg/km2/day, T-N 6.65kg/km2/day, T-P 1.75kg/km2/day, and Pb 0.10kg/km2/day. Results of unit loads were compared with the unit pollutant loads from land-use in Korea and USA. The unit load of TSS was lower than that of USA. Estimated BOD and T-N and T-P unit loads were lower than that of Korea.
  • 10.

    Application of SOPs (Standard Operating Procedures) in National Environmental Specimen Bank

    김명진 | 이장호 | 최태영 and 4other persons | 2012, 21(2) | pp.327~338 | number of Cited : 1
    Abstract PDF
    Environmental specimen banks provide the baselines for the scientists and decision makers to do research using the past and present specimens to expect the possible contaminant implications of the future. Many chemicals that are considered harmless now but not found may be found and pose threats in the future. Collected specimens of animals and plants should be conserved without contamination for future analysis. To ensure the availability of samples for the retrospective analysis, the establishment and maintenance of specimen banks in the developing and developed nations has become absolutely necessary. National Environmental Specimen Bank (NESB) established at National Institute of Environmental Research (NIER) in 2009. For the application of NESB, several activities such as standard operating procedures (SOPs) development have been prepared. This study applied the guidelines for sampling and sample treatment of five environmental specimens which had been prepared from 2007 to 2009. The target species were shoots of red pine and Korean pine, leaves of Mongolian oak, eggs of domestic pigeon and muscles and livers of common carp. The NESB will enhance the quality of environmental assessment and environmental monitoring based on real time and retrospective analysis.