Since 1970’s rapid urbanization and economic growth, the population was highly increased
and residential type was changed from single detached house to high density and high-rise
apartment. Recently more high-rise residential building generates more traffic volumes and it
makes spatial concentration. The highly traffic volumed road and high residential building was
constructed nearby, it occurs noise problem.
The purpose of this study is comparing the performance of three type noise barrier between
noise source and receiver using a noise map simulation. Three types were composed as road
side planting trees, building side planting trees and noise barrier wall.
Planting trees is less effective than noise barrier wall as a noise barrier. And they are all
effective under 3 stories than over 5 stories, especially noise barrier function can’t work over 5
An Environmental Specimen Bank (ESB) is an archive for samples that can be used to
document and assess the quality of the environment in which we live. An ESB program looks at
changes in the concentration of human and environmental specimens over long periods of time
through retrospective analysis of archived samples of a particular area collected at regular
intervals. The idea of ESB was first proposed by German and American scientists in the early
1970s and has been established since 1979 in Germany, USA, and Japan. Korea plans to
establish a National Environmental Specimen Bank (NESB) in 2010. The NESB will be able to
assess and improve the quality of analytical measurements as well as to compare the past and
current environmental quality as a time capsule. The concept and design for the NESB facility
was developed and its Standard Operation Procedures (SOPs) are being developed based on an
evaluation of ESBs and SOPs of Germany, USA, and Japan.
Environmental specimens proposed for banking are based on typical representatives of every
level of the food chain from each type of ecosystem that are widely distributed thus enabling
comparisons between different sampling areas. Through retrospective analysis of
environmental specimens, the NESB will improve the reliability of environmental monitoring,
ecological risk assessment, and health impact assessment.
To develop a watershed management plan for protection of the lake water quality, the
linkages among land use activities, stream water quality, and lake water quality must be
understood. This study conducted to develop a Decision Support System(DSS) for the reservoir
water quality managers and a comprehensive watershed management plan. This DSS has three
main components; database, interactive decision model, and data delivery interface system.
Graphic User Interface(GUI) was developed as the interface medium to deliver the data and
modeling results to the end users. Water quality management scenarios in Yongdam reservoir
consist of two parts. One is the watershed management, and the other is water quality
management in the reservoir. The watershed management scenarios that were evaluated
include as follows : a removal of point sources, control of waste water treatment plant,
reductions in nonpoint sources, and the management of developed land. Water quality
management scenarios in the reservoir include to install a curtain wall and to operate an algae
removal system. The results from the scenario analysis indicate that the strategy of the reservoir
water quality management can promise the best effectiveness to conserve the quality of
reservoir water. It is expected that many local agencies can use this DSS to analyze the impact of
landuse changes and activities on the reservoir watershed and can benefit from making
watershed management decisions.
The purpose of this study was to simulate the reduction effect of soil loss in the Yongdam
reservoir watershed using SWAT model. To evaluate accuracy for flow and sediment yield of
SWAT model, calibration was performed for the period from Jan. 2002 to Dec. 2003, and the
verification for Jan. 2005 to Dec. 2005. The calibration and the verification were carried out using
data observed at the Cheoncheon gaging station. The R2 and EI values in terms of a flow were
0.8 and 0.78 respectively for calibration, whereas they for verification were 0.88 and 0.86
respectively. In terms of a sediment yield, they were 0.7 and 0.48 respectively for calibration,
whereas for verification were 0.64 and 0.54 respectively. As a results from model simulation,
annual mean soil loss rates in terms of forest, paddy and upland were 0.02 ton/ha/yr, 0.15
ton/ha/yr and 7.58 ton/ha/yr, respectively. The results show that the land use type of a
upland has more significant impact on a total soil loss as well as a sediment yield than other
types of land use. The sediment delivery ratio was determined to be about 0.35. In this study 2
land cover change scenarios for upland area were considered. These scenarios were used an
input to SWAT model in order to evaluate their impact on soil loss and sediment delivery. The
results show that a reduction of the upland area would reduce the soil loss and sediment yield.
For the Han-river estuary and DMZ where white-naped crane (Grus vipio; endangered
migratory bird) stopover or spend winter, the habitat composition and the habitat use pattern
of white-naped crane were analyzed with the position data obtained by the satellite tracking
method. By the use of geographic information system (GIS), the percent composition of seven
habitat categories of white naped-crane data points (n=228) was analyzed. The chi-square test
showed that the white-naped crane habitat use pattern was significantly different (p<0.05) from
that of random points (n=228). It means that white-naped crane select and use particular habitat
area in the Han-river estuary and DMZ.