• Korean Journal of Environment and Ecology
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• v.13 no.1
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• pp.61-69
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• 1999

본 연구는 치악산국립공원에 위치하는 성황림의 산림군집구조를 분석하기 위해 20개의 조사구를 성황림의 평지림과 사면림에 설정하고 조사하였다. 성황림의 산림군집은 졸참나무 - 복자기나무군집과 고로쇠나무 - 층층나무군집으로 분리되었다. 평지림의 졸참나무군집으로 분리되었다. 평지림의 졸참나무 - 복자기나무군집으로 복자기나무 - 졸참나무군집으로 천이가 진행될 것이라 판단되며, 사면림의 고로쇠나무 - 층층나무군집으로 그대로 유지될 것으로 예측된다. 수종간의 상관관계에서는 느릅나무와 으름덩굴.복자기나무.줄딸기, 복자기나무와 으름덩굴, 회잎나무와 졸참나무, 참회나무와 국수나무 등의 수종들 간에는 아주 높은 정의 상관관계를 보여 동질적인 지위(niche)를 갖는 것으로 나타났다. 그러나, 산뽕나무와 쪽동백나무, 복자기나무와 쪽동백나무.당단풍 등의 수종들 간에는 비교적 높은 부의 상관관계를 보여 이질적인 지위를 갖는 것으로 나타났다. 본 조사지의 종다양도는 1.2303~1.2741로 높은 종다양성을 보였다.

• Journal of the Korea Institute of Building Construction
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• v.3 no.4
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• pp.21-25
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• 2003

금호건설외 9개사 공동도급으로 시공한 광주광역시 신청사 건립공사 현장은 광주광역시 서구 치평동 1200번지에 위치하고 있으며, ＜그림 1＞에서와 같이 선박 형태의 단일 건물로 지하주차장을 비롯한 의회동, 시민홀, 대회의실, 행정동 등 5개 구역으로 구분되어 있다. 아울러 외부 광장은 열린 음악회 등 야외행사를 할 수 있도록 건물 좌측의 문화광장이 있으며, 건물 전면 중앙의 시민광장을 비롯한 행사광장, 건물 우측편의 공원 및 휴게마당 등 시민과 함께 하는 열린 시청으로 거듭 날 것이다. 신청사는 현청사의 협소 및 시설의 노후화등으로 신축필요성이 대두되었으며, 현 청사가 여러 곳에 분산 배치됨으로써 제기되었던 시민 불편사항들이 신청사 건립을 통해 해소될 것으로 기대된다.(중략)

• Proceedings of the Korea Water Resources Association Conference
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• 2015.05a
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• pp.404-404
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• 2015

본 연구에서는 도시침수 저감을 위한 여러 구조적인 시설물 중에서도 빗물저류조의 펌프 적정 용량 산정에 관한 연구를 실시하였다. 대규모로 설치되어 자연 방류를 하는 온라인 빗물저류조와 달리 우수 관망 내 설치된 오프라인 빗물저류조의 경우 도심지에 위치하여 규모에 한계가 있으며 신설이나 증대 등에도 제한이 있다. 따라서 기존 빗물저류조 능력의 최대화가 필요하다. 현재 빗물저류조 펌프 운영시스템은 일정 수위 이상이거나 강우 종료 후 토출을 시작하므로 연속강우에 대한 대처가 취약하다. 연속강우에 대한 빗물저류조 능력의 최대화를 위해서는 기존 배제시간 검토가 필요하다. 이를 통하여 펌프 적정 용량을 산정함으로써 도시침수 저감이 가능하다. 본 연구에서는 대림3 어린이공원 빗물저류조를 대상으로 여러 기왕강우를 적용하여 도시침수를 저감할 수 있는 펌프의 적정 용량을 산정한다.

• Proceedings of the Korea Information Processing Society Conference
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• 2008.11a
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• pp.1311-1313
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• 2008

최근 2005년 기준으로 우리나라 어린이 교통사고율은 OECD 국가 총 28개국 나라 중 3위을 차지할 만큼 높다. 그 심각성에 입각하여 도로에서 어린이들을 안전하게 보호해야 한다는 여론이 점차 많이 제기되고 있다. 이에 대한 해결책으로 각 학교나 관계 당국은 어린이의 교통 안전 교육을 강조하고 안전 시설을 마련하고 있지만, 어린이가 돌발 상황을 인지하고, 대처하는 데에는 한계가 있다. 본 연구는 센서 네트워크를 이용한 위치 인식 기술을 활용하여 공원과 같은 공공 장소에서 어린이들이 예고없이 나올 경우 운전자에게 돌발 상황을 미리 경고해 어린이의 안전을 도모하여 교통사고의 예방을 돕는 시스템을 제안한다.

• Journal of the Korean Institute of Landscape Architecture
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• v.49 no.6
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• pp.37-48
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• 2021

Roadside pollution has been identified as the main cause of PM_2.5 in urban areas. Green infrastructure has been understood to mitigate air pollution from roadside traffic effectively, but complication depend on environmental variables. This study aimed to investigate the characteristic of PM_2.5 by the type of space in an urban park located in Songsanghyeon Plaza, surrounded by a 12-lane road on all sides. Type of space was typically classified as roadside square (A), sunken square (B), a mix of trees and hedges/shrubs (C), trees only (D), and grass square (E) according to the land-use type and layers of trees. PM_2.5 was measured for nine days, three days for three different Air Quality Forecasts-Good level (0~15㎍/m³), Moderate level (16~35㎍/m³), and Unhealthy level (36~75㎍/m³). The analysis result was as follows. At good levels, there was statistical significance in the order of D, E < B, C < A. In the case of moderate levels and unhealthy levels, D and E were statistically lower than other land-use types. The characteristic of PM_2.5 in the urban park by type of space was affected by atmospheric flow into the road. The relatively high concentration of A and C was located near the roads. Although B was far away from the road, the reason for the high concentration of PM_2.5 was that no structures blocked the air pollution. Thanks to the type of space C, filtering the air pollution from the roads, the concentration of PM_2.5 in D and E was relatively low.

• Journal of Korean Society of Transportation
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• v.34 no.5
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• pp.394-408
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• 2016

This study aims to study the impact of weather conditions and locational characteristics of bike stations on the usage of public bike sharing system for efficient deployment and operation of public bike systems. Linear regression analysis is used to estimate the usage of public bikes of Goyang city. The statistical analysis shows that the usage rate increases with average temperature and decreases under high wind (over 7m/s) or high temperature (over $29^{\circ}$) condition. The usage rate of public bike sharing system can be differentiated by locational characteristics of bike station such as residential area, commercial area, park, school, and metro station. The usage rate increases in park and commercial areas from 10 AM to 3 PM, while it increases in school areas from 3 PM to 5 PM. Public bikes are highly used near the metro station from 5 PM to 8 PM. The stations in parks are highly used in late night, and the usage rate in CBD area increases after the midnight.

• Korean Journal of Environment and Ecology
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• v.10 no.2
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• pp.251-269
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• 1997

To investigate the plant community structure of Chohangyoung valley in Soraksan National Park, thirty nine plots(each size was 100m$^{2}$) were set up and surveyed and to analyze the plant community characteristics of valley area and slope area, twenty five plots in five sites were set up and surveyed. According to DCA ordination techniques, the communities were six divided into community types, which were Pinus densiflora community, P. densiflora-Populus maximowiczii community, Po. maximowiczii-P. densiflora community, Po. maszimowiczii community, Fraxinus rhyuchophylla community, Quercus serrata community. Q. serrata community was only distrivuted at slope area and the others were distributied at valley area. The successional trend of six communities was not clearly inferred. Shannon's diversity was 0.9458~1.1769(unit area:500m$^{2}$), and soil acidity was pH 4.65~6.09 in surveyed areas. According to the belt-transect analysis, the dominant species of valley area were P. densiflora, Po. maximowiczii, but the dominant species of slope area was Q. serrata.

• Korean Journal of Environment and Ecology
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• v.23 no.2
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• pp.135-142
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• 2009

To investigate the vegetation structure of mountain ridges ranging from Sebong to Gwaneumbong 23 plots($400m^2$) set up with random sampling method were surveyed. Two groups of Pinus densiflora community, Pinus densiflora-Quercus variabilis-Quercus serrata community were classified by cluster analysis. Pinus densiflora, Quercus variabilis, Quercus serrata, Carpinus laxiflora, and Quecus mongolica were found as a mostly dominant woody plant species in the ridge area from Sebong to Gwaneumbong. In the future, the importance percentage of Pinus densiflora might be decreased, but those of Quercus variabilis, Quercus serrata, Carpinus laxiflora, and Quecus mongolica might be increased. High positive correlations were proved between Quercus variabilis and Fraxinus sieboldiana, Acer palmatum and Ilex macropoda, Cornus kousa and Platycarya strobilacea, Sorbus alnifolia and Carpinus laxiflora, and relatively weak negative correlations were proved between Pinus densiflora and Carpinus laxiflora, Fraxinus sieboldiana and Carpinus laxiflor, Quecus mongolica and Sorbus alnifolia, Ilex macropoda and Sorbus alnifolia. Species diversity index(H') of investigated groups was ranged $0.665{\sim}1.169$.

• Korean Journal of Environment and Ecology
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• v.12 no.4
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• pp.398-405
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• 1999

This study was carried out to investigate exercise load of visitors and physical condition of stairway in the trail of Keumsan located in Hallyo-Haesang National Park. Total trail length of Keumsan is 2,126m, and the number of step-trail section are 15, and the total length of step-trail section is 1,000.4m. Average gradient of step-trail was 20~40%. But the gradient and length were 45.7% and 268.5m in the section 11, and 58.4% and 188.6m in the section 12. The greatest gradient was 67.8% in the section 13. During the climbing in trail, heart rate were 104~184beats/min.. And in the step-trail section 11, 12, and 13, IHR, ELI, and %HRmax were 166.5%, 89.1%, 92.9%, and 167.4%, 89.6%, 93.2%, and 157.8%, 84.5%, 89.9%, respectively.

• Korean Journal of Agricultural and Forest Meteorology
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• v.14 no.4
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• pp.170-178
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• 2012

In this study, in order to provide an information for artificial cultivation of wild mushroom, the meteorological effects on wild mushroom appearance were examined using daily meteorological observations in Chiak National Park. The survey of wild mushroom appearance was carried out once a month from June to October. Under high temperature and humidity conditions in July and August, the appearance of wild mushroom was frequent. In contrast, lower number of wild mushroom appeared in October. Wild mushroom appearance was affected by solar radiation, relative humidity, precipitation, and soil water content whereas the impact of air and soil temperature was lower than that of other meteorological elements.