• 한국환경과학회지
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• 제6권6호
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• pp.563-578
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• 1997

The purpose of this study is to suggest the estimation model of' amenity environment' by Perceived Envionmental Quality Index(PEQI) model. A questionnaire survey was carried out for 연e study area of Taegu-Kyungbuk region. Sampling size was 838(427 of Taegu and 411 of Kyungbuk residents by stratified sampling of each region's(7 Gu for Tae-gu, 7 Cities 61 Gun far Kyungbuk) population. The survey was done during Sep. to Nov, of 1996. The suggested model was composed of four estimation categories and 16 Indicators. The four categories were 'Cleanness 61 Quietness', 'Naturalness & Harmony', 'Beauty 61 Comfort' and 'Environmental Conservation Efforts'. And each category has several individual Indicators. The weighted means of satisfaction were different by each region. Suseong-gu, Dalseogu, Joong-gu(Taegu), Bumcheon, Andong, and Cheondo(Kyungbuk) showed high enoronmental satisfaction, but Dong-gu. Seo-gu(taegu), Youngcheon, and Pohang(Kyungbuk) showed lower environmental satisfaction. By Analytic Hierarchy Process(AHP) of weighting values for each categorirs, 'Enoronmental Conservation Efforts' was estimated as the most Important(value of 0.367), and 'Naturalness 61 Harmony'(0. 242),'Clenness & guletness'(0.225), and 'Beauty & Comfort'(0.166) were Important respectively. Total PEQI's were estimated as 48.0 for Taegu, and 53.3 for Kyungbuk. PEQI's for each regions were between 46.2(Dong-gu) and 59.9(Kimcheon). The validity of the suggested model was verined by factor analysis. The four factors were identnied as the same categories and indicators. Finally, The LISREL+7 model was suggested as estimauon model of 'Amenity Environment' for Taegu-Kyungbuk region.

• 자원환경지질
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• 제41권5호
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• pp.475-484
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• 2008

본 연구에서는 국가위험도 및 국가신용등급 현황을 파악하고, 이들 지표와 광물자원개발 투자와의 관계를 분석하여 해외 광물자원개발투자를 위한 지표를 도출하고자 했다. 이를 위해 국가위험도와 광물자원부존국과의 관계를 분석하였고, OECD 국가신용등급을 적용한 자원개발 투자 위험도와의 상관성을 검토하였다. 실제 광물자원 투자사업 시 국가위험도 역할이 중요한 변수로 제공되는 국가는 자원지수는 양호하나 국가위험도가 글은 국가들이다. 따라서 해외광물자원 투자 시 자원지수와 국가위험도와의 관계에 대한 신중한 검토는 사업 투자 여부 선정을 위한 필수요건이다.

• Parasites, Hosts and Diseases
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• 제59권5호
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• pp.473-479
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• 2021

A nationwide survey of chigger mites causing scrub typhus and an investigation of epidemiologic factors for chigger mites was conducted at 16 localities in 8 provinces in Korea during autumn 2009, 2012, and 2013. A total of 233 Apodemus agrarius were captured, and all were infested with chigger mites. The chigger index was highest in Chungcheongbuk-do in 2009 (358.3) and 2012 (290.1) and Chungcheongnam-do in 2013 (294.4). The predominant chigger mite species was Leptotrombidium pallidum in the northern and central parts and L. scutellare in the southern and western parts, Korea. L. pallidum was not found in Jellanam-do and Gyeongsangnam-do and the distribution of L. scutellare had been expanded in the northern parts of Korea. The chigger index of L. pallidum was positively correlated with temperature and negatively correlated with humidity. The incidence of scrub typhus is dependent on L. scutellare index. These findings could be helpful to monitor the distribution of chigger mites and to develop a preventive measures for scrub typhus in Korea.

• 대한원격탐사학회지
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• 제38권5_3호
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• pp.887-899
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• 2022

기상학적 요인에 의해 발생하는 가뭄은 육상 생태계의 식생에 부정적인 영향을 미친다. 본 연구에서는 기상학적 가뭄이 식생에 영향을 미치는 상태를 식생의 생태가뭄으로 정의하고, 영향 정도를 정량적으로 감시하기 위한 식생의 생태가뭄 상태지수(ecological drought condition index of vegetation, EDCI-veg)를 제안하였다. EDCI-veg는 식생과 기상학적 가뭄 정보 사이의 copula 기반의 이변량 결합확률모델로부터 도출되며, 가뭄이 발생했을 때 현재의 식생 상태가 가뭄으로 인해 얼마나 영향을 받았는지를 수치로 표현할 수 있다. 과거의 기상학적 가뭄 사상과 그에 대응하는 식생 상태를 비교하여 제안된 지수를 살펴본 결과, EDCI-veg는 식생의 생태가뭄을 적절하게 모니터링할 수 있음이 확인되었다. 또한, 원격탐사자료를 활용하여 고해상도의 가뭄 지도를 작성함으로써 생태가뭄 상태를 공간적으로 식별할 수 있었다.

• 환경영향평가
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• 제33권3호
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• pp.131-141
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• 2024

환경영향평가는 제도의 시행 이후 현재까지 국가의 지속가능한 발전을 위해 중요한 역할을 담당하고 있다. 그간 환경영향평가의 발전을 위한 다양한 연구가 이루어졌으나, 과학적이고 효과적인 환경영향평가 수행을 위한 기반 자료의 구축, 특히 개발사업의 유형에 따른 지역별 분포 현황과 개발 특성, 개발사업으로 인한 환경변화 추이, 다양한 환경요소의 시공간적 변화 등을 확인할 수 있는 정량적 자료는 현재로선 부족한 상황이다. 이를 위해 선행연구에서는 개발사업의 종류에 따른 다양한 환경영향을 정량적 지표로 구성하고, 이를 통합하여 개발사업의 친환경성을 대변할 수 있는 EA-INDEX를 마련하였으며, 현재까지 산업단지, 도시개발, 관광단지, 폐기물 소각시설, 폐기물 매립시설에 대한 EA-INDEX가 산정되어 보고되었다. 본 연구에서는 선행연구를 통해 보고된 개발사업별 EA-INDEX를 통합하고 표준화하여 국내에서 이루어진 주요 개발사업의 친환경성을 고찰하였다. 또한 주요 개발사업에 대한 지자체별 EA-INDEX를 산정하여 개발사업에 대한 환경영향을 지자체별로 구분하여 살펴보았다. 그 결과 개발사업의 친환경성은 시간이 지남에 따라 점차 증가하는 경향을 보였으며, 이는 생활환경 부문의 친환경성 증가에 기인함을 확인하였다. 사업별 친환경성의 경우 산업단지와 도시개발 사업은 생활환경 보호 부문이 사업의 친환경성에 주요한 요소임을 확인하였으며, 도로 건설과 매립시설, 관광단지 개발사업의 경우 자연환경 보전 부문이 사업의 친환경성에 대한 주요 요소로 파악되었다. 지자체별 개발사업의 친환경성 분석 결과 울산, 전남, 광주에서 추진·시행된 개발사업의 친환경성이 다른 지역 대비 높았으며, 대전, 경남, 대구에서 추진·협의된 개발사업의 친환경성이 상대적으로 낮게 나타났다. 대전에서 계획된 개발사업은 생활환경 보호 부문의 친환경성을 더욱 높일 수 있도록 사업 계획을 수립하는 것이 필요하며, 경남과 대구는 자연환경 보전 부문의 친환경성을 더욱 제고하는 것이 중요한 것으로 확인되었다. 본 연구는 국내 전반에 걸쳐 비교적 장기간에 이루어진 개발사업의 친환경성을 연도별, 지자체별로 구분하여 정량적 분석을 수행한 것에 의의가 있는 것으로 판단된다.

• 한국환경복원기술학회지
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• 제11권2호
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• pp.1-9
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• 2008

The objective of the study is 10 know the relation of landslide occurrence with using TPI (Topographic Position Index) in the Pyungchang County. Total 659 landslide scars were detected from aerial photographs. To analyze TPI, 100m SN (Small-Neighborhood) TPI map, 500m LN (Large-Neighborhood) TPI map, and slope map were generated from the DEM (Digital Elevation Model) data which are made from 1 : 5,000 digital topographic map. 10 classes clustered by regular condition after overlapping each TPI maps and slope map. Through this process, we could make landform classification map. Because it is only to classify landform, 7 classes were finally regrouped by the slope angle information of landslide occurrence detected from aerial photography analysis. The accuracy of reclassified map is about 46%.

• 한국지반공학회:학술대회논문집
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• 한국지반공학회 2008년도 춘계 학술발표회 초청강연 및 논문집
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• pp.1446-1453
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• 2008

This paper presents the mapping of liquefaction for the Incheon Song-do reclamation area using both the liquefaction potential index(LPI) and the equivalent liquefaction factor of safety(FE). As a result, the mapping of liquefaction based on LPI and FE shows similar distribution pattern. Therefore, the mapping of liquefaction presented in this study will be a convenient index for use when the mapping of liquefaction for the Incheon Song-do reclamation area is drawn up. It will make selection of area that needs specific estimation and areas with adaptation of liquefaction counteraction construction methods for the future reclaimed land with the economical soil investigation.

• 한국축산시설환경학회지
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• 제4권2호
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• pp.183-191
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• 1998

This study was carried out to elucidate the correlation between Germination Index(G.I.) and CO2 emission for evaluation of the maturity of compost products. 13 compost samples was used for this experiment. The G.I. test was carried out on the basis of T-N 200ppm. As a result of this research, we found that CO2 emission method was good simple indicator for evaluation of maturity of compost materials, in spite of G.I. The obtain results are summarized as follows ; 1. The correlation value between the G.I. and the CO2 emission was R2 = 0.776. 2. The correlation value between EC(Electric Conductivity) and G.I. was R2 =0.7. 3. The equation calculated from G.I. and CO2 emission was G.I. = -16.7(InCO2) - 6.87. 4. From these results, we found the possibility of estimation for the value of G.I.(T-N 200ppm) from CO2 emission volume under specific condition.

• 한국환경과학회지
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• 제14권3호
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• pp.265-269
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• 2005

This study was carried out to provide the basic data for an identifying system for Iris species distributed in Korean market from complete analysing of genetic relationship between three native Iris species and one cultivar bred from the native Iris plant. RAPD analysis of genetic relationship among 4 Irises was possible. According to the RAPD analysis, they were divided into two groups. Among 4 Irises used in this study, Iris laevigata 'Veriegata', Iris laevigata and Iris setosa were classified into the same group since they had many similarities even though the habitat of Iris laevigata in Korean peninsular is restricted mainly in the south and Iris setosa is naturally inhabited in the northern part of Kangwondo. The value for the dissimilarity index of Iris laevigata and Iris laevigata 'Veriegata' was 6.757. The value for the dissimilarity index of Iris laevigata and Iris dichotoma was 95.000, so that they were genetically the farthest among them since the genetic relationship between two species are separated far if the value of the dissimilarity index is close to 100.

• Ecology and Resilient Infrastructure
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• 제5권2호
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• pp.88-93
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• 2018

In-situ water quality sampling is used for accurate water quality assessment. However, in-situ water quality sampling offers limited samples and requires much time and intensive labors. Remote sensing approach has recently applied for water quality assessment. It has shown the advantage of offering a synoptic view but also more efficient and economical. In this study, we utilized Landsat Imagery to estimate the water quality of the Tamsui River basin, considered as one of the most important rivers located in the north of Taiwan. In order to monitor water quality of Tamsui River basin, a linear regression relation between the value of spectral radiance and four water quality parameters are investigated with 38 water sampling stations. Through the regression model, we could estimate river pollution index (RPI) from the predicted value of four water quality parameters. By using RPI, we can examine the pollution level of Tamsui River. The accuracy of RPI conversion of this study ranged from 32.2% to 68.2%.