녹지의 규모와 기온저감효과와의 관련성에 관한 연구

윤용한(Yong Han Yoon),배병호(Byung Ho Bae) 한국환경생물학회 2002 환경생물 : 환경생물학회지 Vol.20 No.1

N/A In order to investigate relation between park scale and temperature decrease in and near parks, temperature distribution was observed and was analyzed in four parks of different scales. Relation between the temperature decrease and ratio of green coverage was also analyzed by using regression analysis. Lower temperature was observed in and near the parks and larger cooling effect was implicated near the larger parks. The result of regression analysis showed that the increase of green coverage ratio leads the decrease of the temperature in the parks. The degree of the temperature decrease varied according to the types of the coverage.

녹지 조건에 따른 일사량의 차이가 기온에 미치는 영향

윤용한(Yong Han Yoon) 한국전통조경학회 2001 한국전통조경학회지 Vol.19 No.3

N/A N/A

가을철 교통조건에 따른 가로공간 열확산 분포 영향

윤용한 ( Yong-han Yoon ),김정호 ( Jeong-ho Kim ) 한국환경과학회 2017 한국환경과학회지 Vol.26 No.4

This study sought to determine the changes in weather conditions in urban streets, along with conditions of traffic and roads in urban areas. The variations in weather conditions depending on traffic differed according to distance. First, the temperature difference measured by traffic results is as follows: T1 point 1.03℃, T2 point 1.04℃, T3 point 0.9℃, T4 point 1.01℃, and T5 point 0.31℃. The average difference between the measured temperatures by the point of measurement was 0.86℃. The changes in wind velocity according to traffic volume results of the measurements is T1 point 1.32 m/s, T2 point 0.80 m/s, T3 point 0.29 m/s, T4 point 0.04 m/s, and T5 point 0.09 m/s. The difference between the average wind speeds was 0.51 m/s and traffic jams caused substantial differences in distance. The relative humidity tended to be inversely proportional to temperature. The measurements results ares T1 point 2.29%, T2 point 2.67%, T3 point 2.47%, T4 point 2.16%, and T5 point 0.91% The difference between the average relative humidity was 7.3%. In case of independent sampling T test according to traffic volume, changes in wind velocity and temperature were directly proportional to the level of statistical significance(p<0.01). On the other hand, relative humidity tended to be inversely proportional; however, there was no statistical significance.

생체기후도를 이용한 비오톱 유형별 환경 쾌적성 증진 방안 연구

윤용한 ( Yong Han Yoon ),주창훈 ( Chang Hun Joo ),김정호 ( Jeong Ho Kim ) 한국지역개발학회 2011 韓國地域開發學會誌 Vol.23 No.3

This study analyzed weather characteristics for each biotope type and influential factors on outdoor temperature in the summer when thermal contamination is at its worst targeting Daedoek-gu, and suggested a management plan in thermal comfort aspect by using a bioclimatic chart. Impermeable area ratio for each biotope type was shown in orders of industrial area biotope(94.80%)>commercial area biotope(92.20%)>low floor residential area biotope (85.75%)>high floor residential area biotope(76.02%)>river biotope(2.35%)>forest biotope(0%). Meteorological element analysis was divided into daily maximum and daily minimum and conducted, and outdoor temperature, humidity, wind speed, globe temperature, and surface temperature were measured. Outdoor temperature at the daily maximum temperature was shown in orders of industrial area biotope(36.3℃)>commercial area biotope(35.5℃)>high and low floor residential area biotope(34.8℃)>river biotope(33.9 ℃)>forest biotope(30.4℃). Low humidity was created at high temperature region and high humidity was created at low temperature region, there was no special tendency in wind speed but it contributed to creation of outdoor temperature, and surface temperature and globe temperature were measured as same tendency as outdoor temperature. Outdoor temperature at the daily minimum temperature was shown in orders of commercial area biotope(27.5℃)>industrial area and low floor residential area biotope(26.9℃)>high floor residential area biotope(26.5℃)>river biotope(26.6℃)>forest biotope(26.4℃), humidity was over 80%, and globe temperature was low temperature region with lowest value at forest biotope(26.8℃) and river biotope(26.7℃) that have strong wind speed. As a result of understanding the level of affecting creation of outdoor temperature for each land cover type, impermeable cover area showed positive correlation(correlation coefficient of 0.608) for increase of outdoor temperature, and tree planting area had negative correlation(correlation coefficient of -0.694). It was analyzed surface temperature (correlation coefficient of 0.821) and globe temperature(correlation coefficient of 0.790) had high interrelationship with change in outdoor temperature. Based on this, this study suggested expansion of green and water permeable cover, inflow of air current, and application of a planting method that considered wind corridor as a means to enhance comfort for each biotope type.

한국형 스프링식 장력 장치의 개발 및 평가

윤용한(Yoon Yong-Han),임금광(Yim Geum-Kwang) 한국철도학회 2005 한국철도학회 학술발표대회논문집 Vol.- No.-

This paper presents a development and evaluation of a spring type tensioning device for Korea railroad. The wheel type tensioning device used in the Korea railroad requires much time and labor for maintenance including wire replacement and oil application. So, we found it necessary to develop a new type of maintenance-free tensioning device. In this paper, we introduced a spring type tensioning device for Korea railroad.

건설발생토의 식재용토 재활용을 위한 적합성 평가

윤용한,김원태,박봉주,김선주,임병옥,손진관,Yoon, Yong-Han,Kim, Won-Tae,Park, Bong-Ju,Kim, Sun-Ju,Im, Byeong-Ok,Son, Jin-Kwan 한국잔디학회 2006 한국잔디학회지 Vol.20 No.1

본 연구는 수도권매립지 주변 건설폐기물 중간처리업체 내에 적재되어 있는 건설발생토의 유해물질 함량과 토양오염도를 측정하여 환경식재기반으로서의 활용 가능성에 대해서 검토하였다. 본 연구에 사용된 건설발생토의 유해물질 함량은 분석항목 모두 지정폐기물에 함유된 유해물질의 기준치 이내로 나타나 환경식재기반으로서의 재활용 가능성이 높은 것으로 나타났다. 토양오염도의 분석에서 토양오염 허용기준을 초과하지 않는 것으로 나타났고, 잔디 생육실험에 있어서도 건설 발생토는 식생토사로서의 활용 가능성이 있는 것으로 나타났다. This study was carried out to evaluate the recycled waste soils from construction site for using vegetation media. The concentrations of Cd, Pb, $Cr^{6+}$, As, Hg, Cu, Cn, organic P, TCE, and PCE were measured at recycled soil piles of an industrial waste treating company in the Metropolitan landfill area. The concentrations of polluted materials did not exceed to the standard critical levels of soil pollution in all analyzed items. The results suggested a high potential of recycling of the wastes soils for vegetation soil media. However, Cd and $Cr^{6+}$ almost reached the critical levels by the time of sampling, and it is necessary to develop a skill to lower concentrations of those pollutants. In the turfgrass test, the recycled soil did show an encouraging result as vegetation media in the early growth stage of perennial ryegrass.

고농도 염화칼슘 농도처리에 따른 토양개량제와 구절초의 염분저감 상승효과

윤용한,양지,박제민,주진희,Yoon, Yong-Han,Yang, Ji,Park, Je-Min,Ju, Jin-Hee 한국환경과학회 2021 한국환경과학회지 Vol.30 No.10

This study aimed to investigate the effects of soil amendment (heat-expanded clay and active carbon) and planting of Dendranthema zawadskii var. latilobum on the remediation of salt-affected soil and the plant growth under high calcium chloride (CaCl₂) concentration. The experimental group comprised treatments including Non treatment (Cont.), heat-expanded clay (H), active carbon (AC), planting (P), heat-expanded clay+planting (H+P), active carbon+planting (AC+P). A 200 mL solution of CaCl₂ at a concentration of 10 g·L^-1 was applied as irrigation once every 2 weeks. Compared to the Cont., the incorporation of the 'heat-expanded clay' amendment decreased electrical conductivity of the soil leachate and cation exchange capacity, whereas the growth of Dendranthema zawadskii var. latilobum was relatively increased. These results suggest that the combination of 'heat-expanded clay' amendment and planting will mitigate negative effect of de-icing salts and improve plant growth in salt-contaminated roadside soils.

녹지주변의 토지이용형태가 녹지내의 기온저감효과에 미치는 영향

윤용한(Yoon Yong-Han),조계현(Cho Gye-Hyun),백승엽(Baik Seoung-Yeob),김승태(Kim Seung-Tae),김원태(Won-Tae Kin) 한국잡초학회·한국잔디학회 2003 Weed & Turfgrass Science Vol.17 No.1

본 연구는 녹지주변의 토지이용형태의 차이가 녹지내의 기온저감효과에 미치는 영향을 정략적으로 파악하기 위해 녹지내외의 기온분포를 관측하였다. 그 데이터를 바탕으로 녹지내의 토지피복현황과 기온, 녹지주변의 기온저감효과와 그 영향범위 및 수목그루와 기온저감효과와의 관련성을 회귀분석 등에 의해 해석하였다. <br/> 그 결과 녹지내의 고온역은 포장면, 나지 주변에서 저온역은 수림지, 주변에서 형성되었다. 또한 녹지를 중심으로 풍하 쪽의 관측치는 최저기온보다 최고기온이 편차가 크지만, 전체적으로는 녹지에 가까워질수록 기온이 낮아지는 경향을 보였다. 토지피복비율과 기온과의 관계를 보면, 수림지, 초지 및 수면은 기온저감에 효과적이고, 그 토지피복율의 증감에 따라 기온저감효과가 서로 달랐다. 녹지주변의 토지이용형태의 차이가 녹지내의 기온저감효과에 미치는 영향은 Shakuzopark(주거전용지역)보다 Ageomaruyama Park(시가화조정구역) 상대적으로 효과가 컸다. The purpose of this study was to find out how different types of land use around green belts affect temperature decrease effects. For this, temperatures within and outside of green belts were measured. Based on the collected data, the study analyzed the land cover status and temperatures within green belts, temperature decrease effects and the range of effects around green belts, and the correlation between trees and temperature decrease effects by way of regression analysis. <br/> As a result, areas of the high temperature within green belts were formed on paved surfaces, whereas areas of low temperature were formed around forests or water surfaces. In addition, deviation was bigger in the highest temperature than the lowest one for areas of Leeward around green belts, but in general, there was a tendency that temperature became low near to green belts. As for the relation between land cover rate and temperature, what was effective to temperature decrease included forests, pasture and water surfaces. On the other hand, the effects of temperature decrease varied depending on increase or decrease of land cover rates. As for the influence of the different land use types around green belts on temperature decrease effects, the Shakuzi Park showed relatively stronger effects than the Ageomaruyama Park.

친환경건축물 인증의 개정 전후 평가성능 비교 분석을 통한 생태환경 부문 변화실태

윤용한(Yong Han Yoon),김정호(Jeong Ho Kim),김신덕(Shin Deuk Kim) 서울연구원 2011 서울도시연구 Vol.12 No.1

공원녹지의 토지피복비율과 기온간의 요인분석

윤용한 ( Yong Han Yoon ),박봉주 ( Bong Ju Park ),김원태 ( Won Tae Kim ),박선영 ( Sun Young Park ) 한국환경과학회 2008 한국환경과학회지 Vol.17 No.5