Pub Date : 2016-12-31DOI: 10.17820/ERI.2016.3.4.315
H. Kong, S. Kim, Hyung-Jin Cho
본 연구에서는 도시 토지이용과 열 환경의 관계를 파악하기 위하여, 인천시에서 토지이용이 다른 곳에서 기온을 측정하였고, 지난 40년간 토지이용과 기온의 변화를 파악하였으며, 위성영상 자료를 이용하여 토지이용과 온도의 관계에 대하여 연구하였다. 2014년 8월 19일부터 21일까지 산림지, 경작지 (논), 나지 (운동장)...
{"title":"Effect of Land Use on Urban Thermal Environments in Incheon, Korea","authors":"H. Kong, S. Kim, Hyung-Jin Cho","doi":"10.17820/ERI.2016.3.4.315","DOIUrl":"https://doi.org/10.17820/ERI.2016.3.4.315","url":null,"abstract":"본 연구에서는 도시 토지이용과 열 환경의 관계를 파악하기 위하여, 인천시에서 토지이용이 다른 곳에서 기온을 측정하였고, 지난 40년간 토지이용과 기온의 변화를 파악하였으며, 위성영상 자료를 이용하여 토지이용과 온도의 관계에 대하여 연구하였다. 2014년 8월 19일부터 21일까지 산림지, 경작지 (논), 나지 (운동장)...","PeriodicalId":415343,"journal":{"name":"Ecology and resilient infrastructure","volume":"40 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127099751","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2016-12-31DOI: 10.17820/ERI.2016.3.4.247
D. Seo, Tongeun Lee, Jaeyoung Kim, Youngmin Koo
강우 시 표면 유출에 의한 비점오염물질의 하천 유입은 도시 하천 관리에 부정적인 영향을 미치며 특히 강우 초기의 수질농도가 매우 높은 것으로 알려져 있다. 본 연구에서는 하천의 제외지 또는 유수지 등의 공간을 활용하여 침강 및 여과작용을 이용하여 최소한의 에너지 및 비용을 이용하여 오염물질을 정화시키면서 하...
{"title":"Development of a Sustainable First Flush Management System for Urban Stream Water Quality Management","authors":"D. Seo, Tongeun Lee, Jaeyoung Kim, Youngmin Koo","doi":"10.17820/ERI.2016.3.4.247","DOIUrl":"https://doi.org/10.17820/ERI.2016.3.4.247","url":null,"abstract":"강우 시 표면 유출에 의한 비점오염물질의 하천 유입은 도시 하천 관리에 부정적인 영향을 미치며 특히 강우 초기의 수질농도가 매우 높은 것으로 알려져 있다. 본 연구에서는 하천의 제외지 또는 유수지 등의 공간을 활용하여 침강 및 여과작용을 이용하여 최소한의 에너지 및 비용을 이용하여 오염물질을 정화시키면서 하...","PeriodicalId":415343,"journal":{"name":"Ecology and resilient infrastructure","volume":"62 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129986928","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2016-12-31DOI: 10.17820/ERI.2016.3.4.322
Seung-Nam Jin, Kang-Hyun Cho
: The distribution of floodplain vegetation is mainly affected by hydrological and hydraulic processes. In this study, we investigated changes in the vegetation distribution due to flood discharge alteration, and the relationship between the vegetation types and the flood frequency during the last ten-year period in the Cheongmi-cheon Stream. Flood discharge of the Cheongmi-cheon Stream tended to decrease from 2006 to 2016. It has greatly decreased to less than 160 m 3 /s since 2013. This resulted in the settlement of Phragmites japonica to the wide sand bar at the Cheongmi-cheon Stream, even though it had sparse vegetation before 2013. The sand bar was fully covered with P. japonica in 2016. Vegetation communities in the floodplain were classified by dominant species, i.e. the annual-hygrophytic, the perennial hygrophytic and the mesophytic communities. Analysis of the relationship between the vegetation communities and the flood frequency shows the annual hygrophytes, perennial hygrophytes and the mesophytes communities distributed in the range of under 1 year, 1-10 year and over 7 year flood inundation area, respectively. In conclusion, distribution of the floodplain vegetation is closely related with the flood discharge and frequency in the Cheongmi-cheon Stream.
{"title":"Expansion of Riparian Vegetation Due to Change of Flood Regime in the Cheongmi-cheon Stream, Korea","authors":"Seung-Nam Jin, Kang-Hyun Cho","doi":"10.17820/ERI.2016.3.4.322","DOIUrl":"https://doi.org/10.17820/ERI.2016.3.4.322","url":null,"abstract":": The distribution of floodplain vegetation is mainly affected by hydrological and hydraulic processes. In this study, we investigated changes in the vegetation distribution due to flood discharge alteration, and the relationship between the vegetation types and the flood frequency during the last ten-year period in the Cheongmi-cheon Stream. Flood discharge of the Cheongmi-cheon Stream tended to decrease from 2006 to 2016. It has greatly decreased to less than 160 m 3 /s since 2013. This resulted in the settlement of Phragmites japonica to the wide sand bar at the Cheongmi-cheon Stream, even though it had sparse vegetation before 2013. The sand bar was fully covered with P. japonica in 2016. Vegetation communities in the floodplain were classified by dominant species, i.e. the annual-hygrophytic, the perennial hygrophytic and the mesophytic communities. Analysis of the relationship between the vegetation communities and the flood frequency shows the annual hygrophytes, perennial hygrophytes and the mesophytes communities distributed in the range of under 1 year, 1-10 year and over 7 year flood inundation area, respectively. In conclusion, distribution of the floodplain vegetation is closely related with the flood discharge and frequency in the Cheongmi-cheon Stream.","PeriodicalId":415343,"journal":{"name":"Ecology and resilient infrastructure","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121391504","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2016-12-31DOI: 10.17820/ERI.2016.3.4.215
J. Joo, Saeromi Lee, C. Ahn, In-seok Lee, Zihan Liu, Jae-Roh Park
: A new immobilization technique of nanoscale TiO 2 powder to expanded polystyrene (EPS) balls with temperature-controlled melting method was developed, and the photocatalytic activity of TiO 2 powder-embedded EPS balls were evaluated using methylene blue (MB) solution under ultraviolet irradiation ( λ = 254 nm). Based on the scanning electron microscope (SEM) images and associated energy-dispersive X-ray spectroscopy (EDX) analysis, the components of the intact EPS balls were mainly carbon and oxygen, whereas those of TiO 2 -immobilized EPS balls were carbon, oxygen, and titanium, indicating that relatively homogenous patches of TiO 2 and glycerin film were coated on the surface of EPS balls. Based on the comparison of degradation efficiencies of MB between intact and TiO 2 -immobilized EPS balls under UVC illumination, the degradation efficiencies of MB can be significantly improved using TiO 2 -immobilized EPS balls, and surface reactions in heterogeneous photocatalysis were more dominant than photo-induced radical reactions in aqueous solutions. Thus, TiO 2 -immobilized EPS balls were found to be an effective photocatalyst for photodegradation of organic compounds in aqueous solutions without further processes (i.e., separation, recycling, and regeneration of TiO 2 powder). Further study is in progress to evaluate the feasibility for usage of buoyant TiO 2 -immobilized EPS to inhibit the excessive growth of algae in rivers and lakes.
{"title":"Development of Titanium Dioxide (TiO2)-immobilized Buoyant Photocatalyst Balls Using Expanded Polystyrene (EPS)","authors":"J. Joo, Saeromi Lee, C. Ahn, In-seok Lee, Zihan Liu, Jae-Roh Park","doi":"10.17820/ERI.2016.3.4.215","DOIUrl":"https://doi.org/10.17820/ERI.2016.3.4.215","url":null,"abstract":": A new immobilization technique of nanoscale TiO 2 powder to expanded polystyrene (EPS) balls with temperature-controlled melting method was developed, and the photocatalytic activity of TiO 2 powder-embedded EPS balls were evaluated using methylene blue (MB) solution under ultraviolet irradiation ( λ = 254 nm). Based on the scanning electron microscope (SEM) images and associated energy-dispersive X-ray spectroscopy (EDX) analysis, the components of the intact EPS balls were mainly carbon and oxygen, whereas those of TiO 2 -immobilized EPS balls were carbon, oxygen, and titanium, indicating that relatively homogenous patches of TiO 2 and glycerin film were coated on the surface of EPS balls. Based on the comparison of degradation efficiencies of MB between intact and TiO 2 -immobilized EPS balls under UVC illumination, the degradation efficiencies of MB can be significantly improved using TiO 2 -immobilized EPS balls, and surface reactions in heterogeneous photocatalysis were more dominant than photo-induced radical reactions in aqueous solutions. Thus, TiO 2 -immobilized EPS balls were found to be an effective photocatalyst for photodegradation of organic compounds in aqueous solutions without further processes (i.e., separation, recycling, and regeneration of TiO 2 powder). Further study is in progress to evaluate the feasibility for usage of buoyant TiO 2 -immobilized EPS to inhibit the excessive growth of algae in rivers and lakes.","PeriodicalId":415343,"journal":{"name":"Ecology and resilient infrastructure","volume":"69 3","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131658171","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2016-12-31DOI: 10.17820/ERI.2016.3.4.302
D. Kim, Hwang Dongkyu
수목의 활력도는 다양한 방법으로 측정한다. 수목의 형성층 전기저항은 전기생리학적 진단 방법을 이용하여 수목의 활력도를 간접적으로 나타낸다. 본 연구는 Shigometer를 이용하여 몇 가지 수목의 활력도를 측정하고 수종 간 차이를 비교하고자 하였다. 그리고 개엽 시기, 방위, 수피 온도 등 전기저항 값에 영향을 주는 ...
{"title":"Assessment of Landscape Tree Vigor Using Cambial Electrical Resistance","authors":"D. Kim, Hwang Dongkyu","doi":"10.17820/ERI.2016.3.4.302","DOIUrl":"https://doi.org/10.17820/ERI.2016.3.4.302","url":null,"abstract":"수목의 활력도는 다양한 방법으로 측정한다. 수목의 형성층 전기저항은 전기생리학적 진단 방법을 이용하여 수목의 활력도를 간접적으로 나타낸다. 본 연구는 Shigometer를 이용하여 몇 가지 수목의 활력도를 측정하고 수종 간 차이를 비교하고자 하였다. 그리고 개엽 시기, 방위, 수피 온도 등 전기저항 값에 영향을 주는 ...","PeriodicalId":415343,"journal":{"name":"Ecology and resilient infrastructure","volume":"98 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133957736","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2016-12-31DOI: 10.17820/ERI.2016.3.4.221
Y. Yoon, H. Lim, Weonjae Kim, Jin-Hong Jung, Jae-Roh Park
{"title":"Development and Application of Multi-Functional Floating Wetland Island for Improving Water Quality","authors":"Y. Yoon, H. Lim, Weonjae Kim, Jin-Hong Jung, Jae-Roh Park","doi":"10.17820/ERI.2016.3.4.221","DOIUrl":"https://doi.org/10.17820/ERI.2016.3.4.221","url":null,"abstract":"","PeriodicalId":415343,"journal":{"name":"Ecology and resilient infrastructure","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125866615","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2016-12-31DOI: 10.17820/ERI.2016.3.4.263
Sunhwa Choi, Hyungseok Park
: This study investigated the hydraulic impact scope and dissolved oxygen (DO) concentration distribution by the micro-bubble aeration in the Juksan Lake located in Asan city in Chungcheongnam-do province. A tracing experiment for hydraulic impact scope was used which constituted a 20% rhodamine solution. A 160 m-guideline was installed in the horizontal direction of the micro-bubble jet flow and the rhodamine concentration, water temperature, and DO concentration were measured at depths of 1 m, 2 m, and 3 m at intervals of 10 m. In the Juksan Lake, the effective range of jet flow discharged by the micro-bubble generator was about 40 m, and after then the jet plume moved up to 80 m to 120 m through the advection and diffusion processes of ambient water. DO concentration in the lake was maintained at 7.4-12.6 mg/L during tracking experiment. The DO of the lake sediments improved from 0.2 mg/L to 8.0 mg/L after applying micro-bubble aeration. In conclusion, the micro-bubble aeration can be an effective technology for the management and improvement of water quality in an agricultural reservoir.
{"title":"Hydraulic Impact Scope and Dissolved Oxygen Distribution by the Micro-bubble Aeration in an Artificial Lake","authors":"Sunhwa Choi, Hyungseok Park","doi":"10.17820/ERI.2016.3.4.263","DOIUrl":"https://doi.org/10.17820/ERI.2016.3.4.263","url":null,"abstract":": This study investigated the hydraulic impact scope and dissolved oxygen (DO) concentration distribution by the micro-bubble aeration in the Juksan Lake located in Asan city in Chungcheongnam-do province. A tracing experiment for hydraulic impact scope was used which constituted a 20% rhodamine solution. A 160 m-guideline was installed in the horizontal direction of the micro-bubble jet flow and the rhodamine concentration, water temperature, and DO concentration were measured at depths of 1 m, 2 m, and 3 m at intervals of 10 m. In the Juksan Lake, the effective range of jet flow discharged by the micro-bubble generator was about 40 m, and after then the jet plume moved up to 80 m to 120 m through the advection and diffusion processes of ambient water. DO concentration in the lake was maintained at 7.4-12.6 mg/L during tracking experiment. The DO of the lake sediments improved from 0.2 mg/L to 8.0 mg/L after applying micro-bubble aeration. In conclusion, the micro-bubble aeration can be an effective technology for the management and improvement of water quality in an agricultural reservoir.","PeriodicalId":415343,"journal":{"name":"Ecology and resilient infrastructure","volume":"45 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124146940","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2016-12-31DOI: 10.17820/ERI.2016.3.4.272
In-Kyoon Yoo, Suhyung Lee, Dae-Seok Han, S. H. Lee
투수성 포장은 도시에서 불투수면 증가에 따라 발생하는 환경문제에 대응하기 위한 대표적인 저영향개발 (Low-Impact Development, LID) 기법의 하나이다. 도시의 도로가 투수성 포장으로 바뀐다면 도시의 불투수면이 약 절반으로 줄어들고, 더 나가 지붕으로부터의 강수 유출까지 수용할 수 있다면 도로는 도시 물 순환 문...
{"title":"Worries and Reality Regarding Porous Asphalt Pavements: Structural Integrity, Flood Mitigation and Non-Point Pollution Reduction","authors":"In-Kyoon Yoo, Suhyung Lee, Dae-Seok Han, S. H. Lee","doi":"10.17820/ERI.2016.3.4.272","DOIUrl":"https://doi.org/10.17820/ERI.2016.3.4.272","url":null,"abstract":"투수성 포장은 도시에서 불투수면 증가에 따라 발생하는 환경문제에 대응하기 위한 대표적인 저영향개발 (Low-Impact Development, LID) 기법의 하나이다. 도시의 도로가 투수성 포장으로 바뀐다면 도시의 불투수면이 약 절반으로 줄어들고, 더 나가 지붕으로부터의 강수 유출까지 수용할 수 있다면 도로는 도시 물 순환 문...","PeriodicalId":415343,"journal":{"name":"Ecology and resilient infrastructure","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116403383","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2016-12-31DOI: 10.17820/ERI.2016.3.4.285
W. Lee, H. Choi
본 연구는 원주천을 대상으로 하천시설물의 최적 설계를 위한 안정하도 평가와 물리적 교란개선 평가를 수행하였다. 안정하도 설계를 위한 구간별 안정경사를 분석하였으며, 안정경사를 만족하기 위한 하천시설물의 개선 시나리오를 도출하였다. 그에 따라 각 시나리오에 대한 물리적 교란개선 평가를 통해 안정하도 설계와...
{"title":"Physical Disturbance Improvement Evaluation and Habitat Suitability Analysis by Stable Channel Design","authors":"W. Lee, H. Choi","doi":"10.17820/ERI.2016.3.4.285","DOIUrl":"https://doi.org/10.17820/ERI.2016.3.4.285","url":null,"abstract":"본 연구는 원주천을 대상으로 하천시설물의 최적 설계를 위한 안정하도 평가와 물리적 교란개선 평가를 수행하였다. 안정하도 설계를 위한 구간별 안정경사를 분석하였으며, 안정경사를 만족하기 위한 하천시설물의 개선 시나리오를 도출하였다. 그에 따라 각 시나리오에 대한 물리적 교란개선 평가를 통해 안정하도 설계와...","PeriodicalId":415343,"journal":{"name":"Ecology and resilient infrastructure","volume":"44 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125836998","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2016-12-31DOI: 10.17820/ERI.2016.3.4.307
Sun dong Chegal, G. Cho, Chang Wan Kim
{"title":"Development of Hydraulic Analysis and Assessment Models for the Restoration of Ecological Connectivity in Floodplains Isolated by Levees","authors":"Sun dong Chegal, G. Cho, Chang Wan Kim","doi":"10.17820/ERI.2016.3.4.307","DOIUrl":"https://doi.org/10.17820/ERI.2016.3.4.307","url":null,"abstract":"","PeriodicalId":415343,"journal":{"name":"Ecology and resilient infrastructure","volume":"6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121711644","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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