• Journal of Bio-Environment Control
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• v.24 no.4
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• pp.287-295
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• 2015

This study was conducted to find the suitability site selection for the construction of Saemangeum horticulture complex taking into account cost-effective environmental management by analyzing and comparing meteorological conditions. The study sites were regions around the Saemangeum area in which the development of an industrial complex extending 28,300 ha is planned. We collected meteorological data in 12 candidate sites and established a rating scheme and thematic maps. We selected ten themes by consulting experts using a questionnaire. Selected ten themes is Summer, 20 days max. temp. mean, Winter, 20 days min. temp. mean, Summer, 90 days temp. mean, Winter, 90 days temp. mean, Year-round, max. wind velocity, Year-round, wind velocity mean, Winter, 90 days solar radiation mean, Year-round, number of foggy days, Year-round, 1 day max. rainfall and Spring. 90 days humidity mean. And we set ratio-based weights for the evaluation parameters.

• Journal of Wetlands Research
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• v.13 no.1
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• pp.45-52
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• 2011

Seawater circulations between a bay and the open sea play an important role to make the ecosystem healthy, providing nutrient and oxygen to the benthic environments and cleaning up pollutions. The health of the benthic environment in a bay is closely related to the flushing characteristics of seawater. In this study, to estimate the seawater distribution and circulation characteristics of benthic environment in the Geunso bay, we calculated the hydraulic turn-over time by a hydro-hypsographic analysis. Digital elevation model (DEM) which was generated using waterline method based upon remotely sensed data and water depth of the subtidal zone estimated by echo-sounding survey was applied to the hydro-hypsograhic analysis through a geographic information system (GIS) spatial analysis. The results showed that 95% of the total area of the bay was tidal flat and the hydraulic turn-over time was 1.03 tidal cycle, which indicated that the flushing characteristics of the Geunso bay was very good. Geunso bay was revealed to occupy relatively wide area of benthic environment and to have relatively big tidal range over other domestic and foreign coastal environment, therefore it could have a better seawater circulation characteristics. This result can be effectively applied as fundamental information to establish the system for a quantitative estimate of health of coastal environment in the west coast of Korea and manage the ecosystem in benthic environments.

• Proceedings of the Korea Water Resources Association Conference
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• 2007.05a
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• pp.961-965
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• 2007

현재 오염총량관리제를 시 군 단위의 기초자치 단체별로 시행하고 있는데 실제로 오염물질의 전달은 행정구역단위가 아닌 유역내에서 이루어지진다. 따라서 본 연구에서는 기초자치 단체별이 아닌 유역단위로 오염부하량과 삭감량을 산정함으로써 유역 단위의 오염총량관리제 계획 수립을 위한 토대를 제공하고자 한다. 본 연구에서는 보청천 유역을 대상으로 유역의 오염부하량을 산정하고자 하였다. 이를 위하여 지리정보시스템(GIS)인 WMS(Watershed Management System)와 ArcView를 이용하여 유역의 지형인자들을 추출하고, 각 소하천의 토지이용도와 생활계, 축산계, 양식계, 토지계를 바탕으로 원단위를 적용하여 발생부하량을 산정하였다. 그리고 각 소하천별 발생부하량 산정 결과를 토대로 각 수질관측점을 기준으로 하여 배출부하량을 산정하였으며, 배출부하량의 산정결과를 이용하여 유달부하량을 산정하였다. 이를 위해서 필요한 수질 데이터는 QUAL2E 모형을 이용하여 모의 하였으며, 수리 및 수질 매개변수를 추정하고 모형의 보정 및 검증을 수행하였다. 그 결과 유달부하량은 BOD는 2013.16kg/일, TN은 1091.34kg/일, TP은 235.16kg/일이 도출되었다. 따라서 장래에 수질이 악화될 경우를 고려하여 수질 항목별 오염량이 2배, 3배로 증가한다고 가정하였다. 오염량이 2배 증가하였을 경우, 오염부하량을 산정한 결과 보청천3 지점에서 BOD는 184.68kg/일이 삭감되어야 하고, 오염량이 3배 증가하였을 경우 BOD는 1775.69kg/일이 삭감되어야 한다는 결과를 도출할 수 있었다. 본 연구와 같이 유역단위로 오염부하량을 산정할 경우, 오염원을 줄이는데 효율적일 것으로 생각되며, 향후 오염총량관리제를 위해 유역단위의 오염부하량 산정을 고려하면 좋을 것으로 사료된다.는 지배적인 요인으로 남게 될 것이다. 본 연구에서는 현재 진행중인 승기천 오염하천 정화사업이 종료되는 시점을 기준으로 남동유수지에 대해 승기천과 연계한 유수지의 환경개선 방법을 제안하였다. 준설을 통해 유수지의 근본적인 오염원을 제거하고 남동유수지 유입부에 인공습지와 수처리설비를 설치하여 유수지의 수질을 개선하고 개선된 수질이 3급수로 유지하도록 하였으며, 설치된 인공습지에는 철새도래지를 조성하여 유수지 유입수인 철새가 날아드는 하천인 승기천의 테마와 연계하도록 하였다. 인공습지 주변으로 식생호안을 설치하고 유수지 주변에는 산책로를 설치하여 지역주민들의 친환경 수변공간으로 활용하도록 하였다. 1유수지와 연결된 2유수지는 BTL사업을 통해 주변공단으로부터의 오폐수를 원천적으로 차단하도록 하였으며 2유수지를 매립하여 지하는 강우시 유출수 저류가 가능한 화물차주차장으로 활용하고 지상은 녹지공간으로 조성하여 공단근로자 및 지역주민을 위한 휴식공간으로 활용될 수 있도록 제안하였다. 본 연구는 남동유수지 환경 개선 사업 실행을 위한 정책 연구로 연구결과를 인천시가 적극 수용하기로 결정함에 따라 인천시의 환경 현안 문제인 남동유수지의 수질개선을 통해 시민의 휴식 및 여가선용 공간으로 활용하기 위한 사업의 기초자료로 활용되며 이미 설계검토가 시작되었다. 본 연구결과는 유수지 및 저수지의 환경개선 사업의 선두적인 성공사례로 국내 타 지역의 유사한 사업에 있어 벤치마킹을 할 수 있는 훌륭한 사례가 될 것이다.요 생산이 증가하자 군신의 변별(辨別)과 사치를 이유로 강력하게 규제하여 백자의 확대와 발전에 걸림돌이 되었다. 둘째, 동기(銅器)의 대체품으로 자기를 만들어 충당해야할 강제성 당위성 상실로 인한 자기수요 감소를 초래하였을 것으로 사료된다. 셋째, 경기도 광주에서 백자관요가 운영되었으므로 지방인 상주

• The Journal of Engineering Geology
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• v.8 no.1
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• pp.51-73
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• 1998

Hydrogeological systems in a metrnpolitan area can be understood by analyzing the groundwater disturbing factors such as constructions and land applications, the groundwater usage for domestic and industrial purposes, and the groundwater pumpage to lower the groundwater level for the structural safety of subway and underground facilities. This study is part of the study performed to understand the groundwater system in the Seoul area and it is focusing on the hydraulic properties. Groundwater well inventory, barometric efficiency measurements, pumping and slug tests, and long-term groundwater monitoring have been perfonrmed during the last 2 years. The relations between Han River and the groundwater around the river also have been observed. These observations and test data, together with the information on soil distribution, geology, and logging data are used to construct a database and GIS(Geographic Information System) presentation system using ARC/INFO. Barometric efficiencies appeared to have no special trends associated with well depths, which maeans that the degree of confinement of the crystaline rock aquifer of the Seoul area is distributed locally depending on the developrnent of fractures. Hydraulic conductivities exponentialiy decrease with well depth. The stage of Han River fluctuates according to the tidal movement of nearby seawater but the tidal effects attenuate due to the underwater dams. Groundwater levels in the Seoul area seem to have declined for the last two years,but it is not certain that the declination represents the long-term trend.

• Proceedings of the KAIS Fall Conference
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• 2010.05b
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• pp.859-862
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• 2010

본 연구는 대전광역시의 응급의료서비스 취약지를 도출하고 취약지역의 보건학적 특성 및 응급의료서비스 취약여부와의 관련성을 분석하여 응급의료 관련 정책의 의사결정에 유용한 기초자료로 제공하기 위한 연구이다. 응급의료서비스 취약지 도출은 Arc GIS의 공간분석 방법 중 가중분석(Cost Weighted distance) 방법으로 응급의료센터로부터의 접근성 분석을 하였으며, 응급의료서비스 취약지의 보건학적 특성 및 응급의료서비스 취약여부와의 관련성은 SPSS 17.0을 이용하여 비모수 t-검정 및 다중회귀분석을 시행하였다. 본 연구의 주요 결과는 다음과 같다. 연구지역의 응급의료기관 분포는 동구와 유성구, 대덕구는 지정된 응급의료센터가 없으나 서구와 중구는 응급의료센터가 2개소 이상 위치하고 있어 응급의료기관 분포가 편중되어 있으며, GIS를 활용하여 응급의료센터와의 접근성 분석을 수행한 결과, 대전광역시 자치구별 전체 면적 대비 응급의료서비스 취약지의 비율이 높은 자치구는 동구가 41.2%로 가장 높았다. GIS를 활용하여 행정동별 응급의료서비스 취약지를 분석한 결과, 대덕구 신탄진동, 동구 대청동과 산내동, 유성구 구즉동과 노은2동, 서구 기성동, 중구 산성동으로 나타났으며, 응급의료서비스 취약지 중 기성동, 대청동이 노인 인구밀도가 높게 나타났다. 응급의료서비스 취약여부에 따른 보건학적 특성별 차이를 분석한 결과, 국민기초생활수급권자, 장애인등록자, 농업인구 비율의 평균은 취약지가 비취약지에 비해 높았으며 통계적으로 유의한 차이를 보였다(p<0.01). 응급의료서비스 취약여부를 종속변수로 하고 지역별 보건학적 특성을 독립변수로 하여 로지스틱 회귀분석을 시행한 결과, 농업인구 비율과 국민기초생활수급권자 비율이 높았으며 이는 통계적으로 유의하여 응급의료서비스 취약여부를 설명할 수 있는 변수인 것으로 나타났다(p<0.01, p<0.05). 이상의 결과를 종합하면 대전광역시 5개 자치구의 행정동 중 응급의료서비스 접근 불평등지역이 도출되었고 이러한 지역은 보건학적 특성 중 농업인구 비율과 국민기초생활수급권자의 비율이 높았으며 이는 통계적으로 유의하여 응급의료서비스 취약여부와 관련성이 있는 것으로 나타났다. 향후 효율적인 응급의료 자원 분배를 위해서는 GIS를 활용한 의사결정이 필요하며, 응급의료서비스 이용의 형평성을 증진시키기 위해서 응급의료서비스의 사각지대에 놓여있는 지역의 보건학적 특성을 고려한 정책이 시행되어야 할 것으로 사료된다.

• Economic and Environmental Geology
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• v.47 no.1
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• pp.49-59
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• 2014

Rainfall-induced landslides are caused by reduction of effective stress and shear strength due to rainfall infiltration. In order to analyze the susceptibility of landslides, the statistical analysis approach has been used widely but this approach has the limitation which cannot take into account of landslide triggering mechanism. Therefore, the physically based model which can consider the process of landslide occurrence was proposed and commonly used. However, the most previous physically based model analyses evaluate and consider the strength characteristics for saturated soil only in the susceptibility analysis. But the strength parameters for unsaturated soil such as matric suction should be considered with the strength parameters for saturated soil since the shear strength in unsaturated soil also plays important role in the stability of slope. Consequently this study suggested the modified physically based slope model which can evaluate strength characteristics for both of saturated and unsaturated soils. In addition, this study evaluated the thickness of saturated part in slope with rainfall intensity and hydraulic characteristics of slope on the basis of physically based model. In order to evaluate the feasibility, the proposed model was applied to practical example in Jinbu area, Gangwon-do, which was experienced large amount of landslides in July 2006. The ROC graph analysis was used to evaluate the validation of the model, and the analysis results were compared with the results of the previous analysis approach.

• Korean Journal of Agricultural and Forest Meteorology
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• v.17 no.1
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• pp.69-74
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• 2015

To analyze quantitatively environmental characteristics of cultivation area of citrus, Satsuma mandarin (Citrus unshiu Marc.), we made digital maps of environmental elements such as topography and climate. Elevation, degree of slope, and slope aspect were selected as elements of topological environment, and the annual mean air temperature, annual total precipitation, mean air temperature on January, extreme value of daily minimum air temperature, and the number of days below $-5^{\circ}C$ were selected as elements of climatic environments. The grid values of 8 environmental elements were extracted by shape of citrus farm area and analyzed distribution patterns. We can determine 3 agroclimatic criteria for growing Satsuma mandarin as over $14.5^{\circ}C$ of annual mean air temperature, over $-10.0^{\circ}C$ of extreme value of daily minimum air temperature, and less 5 days of below $-5^{\circ}C$ of daily minimum air temperature.

• Korean Journal of Agricultural and Forest Meteorology
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• v.9 no.2
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• pp.121-131
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• 2007

Despite the close linkage in changes between the ecological and hydrological processes in forest ecosystems, an integrative approach has not been incorporated successfully. In this study, based on the vegetation and hydrologic data of the Gwangneung headwater catchment with the Geographic Information System, we attempted such an integrated approach by employing the Regional Hydro-Ecologic Simulation System (RHESSys). To accomplish this, we have (1) constructed the input data for RHESSys, (2) developed an integrated calibration system that enables to consider both ecological and hydrological processes simultaneously, and (3) performed sensitivity analysis to estimate the optimum parameters. Our sensitivity analyses on six soil parameters that affect streamflow patterns and peak flow show that the decay parameter of horizontal saturated hydraulic conductivity $(s_1)$ and porosity decay by depth (PD) had the highest sensitivity. The optimization of these two parameters to estimate the optimum streamflow variation resulted in a prediction accuracy of 0.75 in terms of Nash-Sutcliffe efficiency (NSec). These results provide an important basis for future evaluation and mapping of the watershed-scale soil moisture and evapotranspiration in forest ecosystems of Korea.

• Journal of the Korean Geographical Society
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• v.48 no.6
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• pp.879-896
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• 2013

The assessed land values and housing prices have been widely utilized as a basic information for the land and house trades and for evaluating governmental and local taxes. However, there exists a price difference in actual markets between the assessment level and assessed land values or housing prices. This paper emphasizes the spatial mismatch between the assessed land values and housing market prices and particularly addresses the following two aspects by focusing on spatial effects of the modifiable areal units, which would substantially affect the estimation of the assessed land values and housing prices. First, we examine the spatial distributions of the assessed land values and housing market prices, and the gap between those prices, on the basis of the aggregated spatial units(i.e., aggregation districts). Second, we explore the scale effect of the MAUP(modifiable areal unit problem) generally embedded in estimating the prices of the sampled standard lands and houses, and calibrating the correction index for the land values and housing prices for the individuals. For the application, we analysed the land values and housing prices in Seoul utilizing GIS and statistical software. As a result, some spatial clusters that the housing market prices are significantly higher than the assessed land values were identified at a finer geographic level. Also, it was empirically revealed that the statistical results from the regression of regional variables on the assessed land values for the individuals are significantly affected by the aggregation levels of the spatial units.

• Journal of the Korean Geographical Society
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• v.51 no.6
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• pp.853-871
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• 2016

The interest in the prevention of sex crimes and social secure is growing as the number of cases by sexual offences becomes higher. Although various punishable ways have been introduced so far, increasing sex crime is still going on. Thus, effectiveness of legal systems for preventing crimes is questionable. More recently, the approach for environmental criminology has been paid attention for reducing criminal opportunities through environmental design and management of crimes. This study attempts to look over the spatial distribution of sexual crimes in the context of environmental criminology, and examine the correlation between regional environmental factors and the occurrence of sexual crimes empirically. To do this, we visualized the map for sex crimes at the macro-scale and explored the spatial distribution of sexual crimes and spatial clusters based on various spatial statistics using sex crime data published online by the ministry of gender equality and family. Also, we derived the environmental characteristics of sexual crimes by multivariate regression analysis on a large number of explanatory variables of regional environment. Our results will help to understand the current situation and spatial aspects of sex crimes in the nation more realistically. Further, it is respected that our results might be useful basic information for establishing regional policies and plans for the prevention of the sexual crime and enhanced public policing.