Journal of Environmental Impact Assessment 2021 KCI Impact Factor : 0.74

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2006, Vol.15, No.6

  • 1.

    Rank decision on Regional Environment Assessment Indicators Using Triangular Fuzzy Number - Focused on Ecosystem -

    You Ju Han , JUNG SUNG GWAN , Kyunghun Park and 1 other persons | 2006, 15(6) | pp.323~337 | number of Cited : 4
    Abstract PDF
    This study was carried out to offer the systematical and scientific method of regionalenvironment conservation by deciding the rank using fuzzy theory, and try to find themethodology to accurately accomplished the regional environment assessment for sound landconservation. The results were as follows.To transform the Likert’s scale granted to assessment indicators into the type of triangularfuzzy number (a, b, c), there was conversion to each minimum (a), median (b), and maximum(c) in applying membership function. We used the center of gravity and eigenvalue leading tothe rank.In the sequential analysis of rank-based test of assessment indicators by triangular fuzzynumber, the result proclaimed that ranking of the indicators was, in the biotic field, in the orderof ‘dominance’, ‘sociality’, ‘coverage’ and in the abiotic one, ‘soil pH’, ‘T-N’, ‘soil property’, andin the qualitative one, ‘impact rating class’, ‘hemeroby degree’, ‘land use pattern’, and in thefunctional one, ‘protection of water resource’, ‘offer of recreation’, ‘protection of soil erosion’.Therefore, there was a difference between subjective rank from human and the rank fromtriangular fuzzy number. In other words, the scientific rank decision would be not so muchCorresponding Author: Sung-Gwan Jung, Dept. of Landscape Architecture, Kyungpook National University, 1370 Sangyeok-dong, Daegu702-701, Korea Tel: 82-53-950-5783 Fax: 82-53-950-6779 E-mail: sgjung@knu.ac.kr
  • 2.

    An analysis of agricultural landuse suitability using landuse limitation factors - A Case study of Ibang-myeon, Changnyeong-gun, Kyungsangnam-do -

    PARK IN-HWAN , 장갑수 | 2006, 15(6) | pp.357~372 | number of Cited : 0
    Abstract PDF
    The excessive land activities in farming can cause soil erosion, inundation by a flood, andfallow. So far land evaluation has been analyzed using the land use limitation derived from theexcessive land activities. This study was done for evaluating the agricultural fields by using 3land use limitations, inundation potential, soil erodibility potential, and fallow potential. Thestudy area is Ibang-myeon, Changnyeong-gun, Gyeongnam-province, Korea.A logistic regression model was applied to recognize the inundation potential by a flood inthe Nakdong river basin. And potential soil erodibility index (PSEI) was derived from USLEmodel to analyze the soil erodibility potential. And a probability model from a logisticregression model was applied to detect the fallow potential.Therefore, we found 220.7ha for the 4th grade and 86.1ha for the 5th grade was analyzed aswater damage potential. Large area near Nakdong river have problem to grow the rice due tothe damage by water inundation. And 213.6ha for the 3rd grade and 103.3ha for 4th grade wasdetected as a result of the analysis of soil erosion potential. The soil erosion potential was highwhen within-field integrity of soil was not stable, or the kinetic energy was high or the slopelength was long due to a steep slope of a specific land. And 869.1ha for 3rd grade, 174.9ha for4th grade, and 110.6ha for 5th grade was detected to be distributed having the fallow potential.Corresponding Author: In-Hwan Park, Dept. of Landscape Architecture, Coll. of Agr. & Life, Kyungpook National University Tel: +82-53-950-5784 E-mail: parkin@knu.ac.kr
  • 3.

  • 4.

    A Development of Environmental Capacity Estimation Model Using the National Environmental Assessment Indicators

    LEE, Woo-Kyun , 이종수 , JEON SEONG WOO | 2006, 15(6) | pp.385~394 | number of Cited : 4
    Abstract PDF
    Land resources should be managed not only for human utilizations but also forenvironmental preservation. Based on that, environmental capacity should be estimated in bothenvironmental and developmental ways.This study was performed for developing an estimation model for relative environmentalcapacity, considering both Development Tolerance Index(DTI), which shows environmentaland ecological conservation value and is based on national environmental assessmentindicators of the Korea Ministry of Environment, and Development Attractiveness Index(DAI),which shows topographical characteristics and geographical accessibility.The relative environmental capacity in this study can be helpful to coping with the conflict inplanning and managing the use of land resources. The relative environmental capacity in thisstudy, however, did not include either environmental or ecological sensitivity of land resources.This limitation should be solved through further research.
  • 5.

    Community characteristics and assessment of water quality impact by plants at flooded area

    이요상 , 김호준 , 정선아 | 2006, 15(6) | pp.407~415 | number of Cited : 2
    Abstract PDF
    This study carried out submerged area due to Dam construction in the near future. Itincludes species classification of plant, survey of community structure, examination of pollutantload and assessment of water quality impact.The vascular plants of this area are listed 224 taxa; 64 families, 168 genera, 193 species, 30varieties and 1 form. This study area is classified into total 21 communities, most communitywas consist of grass vegetation. Among the communities, Erigeron annuus(869,286m2, 22%)community was dominant and Erigeron annuus-Avena fatuacomminity (16%) was subdominantuntil May, and then Erigeron canadensiscommunity occupied most area to 1,774,985m2 (32%)from May to July.For the evaluation of water quality impact due to submerged macrophyte, nutrient releasetest was conducted both dead body macrophyte and living body macrophyte. The results ofrelease test show that T-N is not released at dead body macrophyte, but it is released at livingbody macrophyte, especially living body Artemisia pricepsvar. orientalisshows 1.436mgN/g. Atrelease test of dead body macrophyte, T-P release rate of Erigeron annuusshows 0.500mgP/g atthe top of them and it also shows 0.436mgP/g at Erigeron annuus of living body macrophyte.T-N load of submerged macrophyte shows 0.76% by comparison of total load on watershedand T-P load of that shows 3.61%. In case of removal macrophyte for reduction of pollutantload in submerged area, T-N load of submerged macrophyte changes from 0.76% to 0.15% byCorresponding Author: Lee, Yosang, Korea Institute of Water and Environment, KWATER, 462-1, Jeonmin-dong, Yuseong-gu, Daejeon,305-730, Korea. Tel: 82-42-860-0363 Fax: 82-42-860-0369 E-mail: yslee@kwater.or.kr
  • 6.

    Purification ability of indoor plants for volatile organic compounds (VOCs)

    KI JUNE SUNG , Soyoung Park , Young-Kee Jang and 1 other persons | 2006, 15(6) | pp.417~423 | number of Cited : 0
    Abstract PDF
    The purification ability of indoor plants for volatile organic compounds was investigated.Philodendron selloum and Spathiphyllum sp. were tested for removal of toluene andtrichloroethylene in the artificially contaminated reactor under laboratory conditions. Eachplant was placed in right side of the reactor and the TCE and toluene concentration change withtime were monitored. In the reactor with Philodendron, the TCE concentrations of left and rightsides were compared to examine the removal effects by plant. In the reactor with Spathiphyllum,air was circulated before sampling, and thus average removal effects by plants on target VOCwere observed.Both plants showed clear effects on removal of VOCs from contaminated indoor air. Theremoval efficiency of Philodendronand Spathiphyllumwere similar and showed 30 - 46% and 31 -47% of purification effects, respectively. The results of this study showed that air purificationusing plants is an effective means of reduction on indoor VOCs concentration level and reducerelated health risk though, supplementary purifying aids or proper ventilation were alsosuggested.
  • 7.

    Characteristics of Respirable Particulate Matter from the Third and Fourth Industrial Complex Area of Daejeon City using Instrumental Neutron Activation Analysis

    Jongmyoung Lim , Lee, Jin-Hong | 2006, 15(6) | pp.425~433 | number of Cited : 0
    Abstract PDF
    Instrumental neutron activation analysis was used to measure the concentrations of 27elements associated with respirable particulate matter (PM10) that were collected from theThird and Fourth Industrial Complex Area of Daejeon City. The distribution patterns ofelements were clearly distinguished with their concentrations varying across more than fourorders of magnitude. The mean for Al were recorded to be the highest value of 1,527 ng/m3,while that for In showed the lowest value of 0.1 ng/m3. If compared in terms of enrichmentfactors, it was found that certain elements (e.g., As, Br, Cl, Cr, I, In, Sb, Se, and Zn) are enrichedin PM10 samples of the study site. The results of factor analysis indicated six factors withstatistical significance, which may exert dominant controls on regulating the elementalconcentration levels in the study area.
  • 8.

    Parameter Optimization for runoff calibration of SWMM

    CHO JAE HEON , Lee, Jong-Ho | 2006, 15(6) | pp.435~441 | number of Cited : 12
    Abstract PDF
    For the calibration of rainfall-runoff model, automatic calibration methods are used insteadof manual calibration to obtain the reliable modeling results. When mathematical programmingtechniques such as linear programming and nonlinear programming are applied, there is apossibility to arrive at the local optimum. To solve this problem, genetic algorithm is introducedin this study. It is very simple and easy to understand but also applicable to any complicatedmathematical problem, and it can find out the global optimum solution effectively. Theobjective of this study is to develope a parameter optimization program that integrate a geneticalgorithm and a rainfall-runoff model. The program can calibrate the various parametersrelated to the runoff process automatically. As a rainfall-runoff model, SWMM is applied. Theautomatic calibration program developed in this study is applied to the Jangcheon watershedflowing into the Youngrang Lake that is in the eutrophic state. Runoff surveys were carried outfor two storm events on the Jangcheon watershed. The peak flow and runoff volume estimatedby the calibrated model with the survey data shows good agreement with the observed values.