• The monthly packaging world
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• s.57
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• pp.174-178
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• 1998

• River and Culture
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• v.8 no.1
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• pp.12-19
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• 2012

• River and Culture
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• v.8 no.1
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• pp.20-24
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• 2012

• Korean Journal of Ecology and Environment
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• v.43 no.1
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• pp.69-81
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• 2010

This study was conducted at 25 sites of 6 mainstreams and 19 tributaries sites within Heuck Stream watershed during May~October 2003 for the survey of fish distributions, compositions, and community characteristics. The survey showed that total fish was identified as 9 family and 26 species in all sites, and Cyprinidae dominated the community as 15 species. The dominant species of >20% of the total were Zacco temminckii (29%), Zacco platypus (22%), and Rhynchocypris oxycephalus (21%) in the watershed. Community analysis, based on the stream spatial gradients, indicated composition differences along the main axis of the stream from the headwater to the downstream; R. oxycephalus predominated in the most headwater zone and Z. temminckii dominated in the lower headwater zone, whereas Z. temminckii -Z. platypus dominated in the mid-to-downstream, and Z. platypus dominated the community in the most downstream zone. Total endemic species was 7 family and 15 species, which is made of 50% in the fish community, so that the high proportion of endemic species indicated a healthy region in terms of fish community, compared to average 23% in Korean peninsula in general. The total number and species of fish increased as the stream order (stream size) increased, indicating that impacts on chemical pollution or habitat disturbance were not so large to the fish community in this watershed. Trophic and tolerance guilds analysis showed that relative proportions of sensitive and insectivore species were >50% in the watershed and decreased as the stream order increased, whereas relative proportions of tolerant and omnivore species showed an opposite results. These outcomes suggest that the natural condition of watershed is preserved relatively and the region should be protected from the chemical and habitat disturbace by agricultural activity and urban developments.

• Proceedings of the Korea Water Resources Association Conference
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• 2010.05a
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• pp.362-366
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• 2010

하천 설계를 위한 다양한 수치모의 프로그램을 활용하여 홍수위, 침수심, 침수면적 등을 검토 분석하여 실시설계에 반영하고 사업을 추진하고 있으나, 실제 호우사상과 수치모의 모형에 대한 결과 분석은 매우 부족한 실정이다. 본 연구에서는 경기도 양평군 흑천 하류부를 대상으로 2006년 7월 집중호우 시 침수흔적도 및 HEC-GeoRAS에 의한 침수영향 비교 검토와 함께 하천 흐름의 주요 영향계수인 조도계수를 다양화하여 침수변화 양상 등에 대해 분석하였다. 모의 결과 흑천 하류부에 대한 침수영향은 침수흔적도와 서로 상이한 결과를 나타내고, 조도계수의 증가에 따라 침수면적은 증가 양상을 보이고 있다. 상기 결과를 볼 때 침수흔적도와 HEC-GeoRAS의 침수구역 비교 검토시에서는 피해당시의 하천환경에 대한 조사 및 피해원인에 대해 정밀 검토후 다양한 사례 연구 후 적용이 필요할 것으로 판단된다. 또한 침수모의 분석이 가능한 다양한 프로그램을 적용하여 향후 실제 침수흔적을 잘 반영할 수 있는 프로그램 개발과 적용시 착안 사항 등에 대한 검토도 병행할 필요가 있는 것으로 판단된다.

• Journal of Korean Society of Water and Wastewater
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• v.29 no.5
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• pp.551-557
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• 2015

The TMDL (Total Maximum Daily Load) has been used to determine the water quality target. LDC (Load Duration Curve) based on hydrology has been used to support water quality assessments and development of TMDL. Also FDC (Flow Duration Curve) analysis can be used as a general indicator of hydrologic condition. The LDC is developed by multiplying FDC with the numeric water quality target of the factor for the pollutant of concern. Therefore, this study was to create LDC using the stream flow data and numeric water quality target of BOD and T-P in order to evaluate the pollutant load characterization by flow conditions in Heukcheon stream. When it is to be a high-flows condition, BOD and T-P are necessary to manage. BOD and T-P did not satisfy the numeric water quality target for both seasons (spring and summer). In order to meet the numeric water quality target in Heukcheon stream, management of non point source pollutant is much more important than that of point source pollutant control.

• Korean Journal of Environment and Ecology
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• v.33 no.3
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• pp.266-279
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• 2019

We investigated the characteristics of fish communities and habitat status of endangered species Rhodeus pseudosericeus in Heuk Stream, a tributary of the Han River, from April to October 2018. During this period, we collected 47 species of 14 families from 10 survey stations using kick nets, cast nets, and long bag set nets. The dominant and subdominant species were Zacco platypus (37.6%) and Z. koreanus (13.8%), respectively. The next most abundant species were Squalidus gracilis majimae (11.1%), Pungtungia herzi (7.7%), Rhodeus pseudosericeus (5.0%), Microphysogobio yaluensis (4.3%), and Hemibarbus longirostris (3.0%). Among the fish collected, 19 species (40.4%) were Korean endemic species. Endangered species were R. pseudosericeus and Acheilognathus signifer while exotic species were Micropterus salmoides and Oncorhynchus mykiss, and land-locked species were Plecoglossus altivelis and Rhinogobius brunneus. The community analysis showed that the dominance and evenness indexes were mostly low and that the diversity and richness indexes were high. Moreover, the river health (index of biological integrity) was mostly excllent (1 site is good, 9 sites are very good). R. pseudosericeus inhabited widely from St. 3 to St. 9 in Heuk Stream, and its population size was large. Age groups for R. pseudosericeus estimated by the frequency distribution of total length in spawning season (April) indicated the 32~45 mm group as 1-year old, the 46~59 mm group as 2-years old, 60~69 mm group as 3-years old, and the 70~89 mm group as 4-years or older. Total length range of male and female was similar, and the sex ratio of female (426) to male (394) was 1 : 0.95. A. signifer, which had been released in Heuk Stream, inhabited from St. 4 to St. 5, but its population size was small. Lastly, this paper discusses a conservation plan for fish in Heuk Stream.

• Proceedings of the Korea Water Resources Association Conference
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• 2009.05a
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• pp.1052-1056
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• 2009

본 연구에서는 대상 지점의 강우량자료와 유출수문곡선으로 전 기간에 대한 유출률과 특정기간을 갖는 유출률을 각각 산정하여 유출특성을 분석하였다. 본 연구를 수행하기 위해서 GIS 소프트웨어인 ArcInfo와 ArcView 등으로 대상유역의 유역도, 강우관측망도, 수위관측망도, 수계망도,티센망도 등을 생성하여 대상유역의 수계 특성을 파악하였다. 개발된 곡선식의 적정성을 판단하기위해 상 하류 간의 유출특성 등을 비교 분석하였으며, 유역 내 댐이나 저수지가 존재할 경우 이를 고려하였다. 유출률 산정결과, 이호대교(남한강 본류) 지점에서의 유출률은 방류량을 고려하지 않았을 경우 59.8%, 고려했을 경우 74.5%로 산정되었다. 흑천의 원덕교 지점에서는 67.1%, 경안천의 경안교 지점에서는 78.3%, 홍천강의 성포교와 남산교 지점은 각각 63.3%, 53.1%로 산정되었다. 따라서 개발된 수위-유량관계곡선식은 적정한 것으로 판단되며, 이에 근거하여 유출수문곡선은 양질의 수준인 것으로 평가되었다.

• Journal of architectural history
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• v.24 no.1
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• pp.17-28
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• 2015

This study aims to research the Kisho Kurokawa's architectural concepts and expressions that are comprised of various and complex theories system for Korean's globalization of architecture. Kurokawa's architectural concepts are composed by Metabolism, Metamorphosis and Symbiosis. And intermediate zone, ambiguity, multivalence are theories that work as media in changing process levels to three main concepts and these are used as media of Metamorphosis which embody Symbiosis. Metabolism include concepts of Metamorphosis and Symbiosis. Symbiosis is comprise of concepts of Metabolism and Metamorphosis, and is a ultimate goal of these three main concepts. Metamorphosis works as a medium in changing process levels from Metabolism to Symbiosis. The architectural expressions are embodied according to these main three concepts and theories of media in changing process levels. And these architectural expressions are analyzed by three elements as follows: form, material & color, structure & technique.

• Korean Journal of Ichthyology
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• v.29 no.4
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• pp.235-243
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• 2017

Reproductive characteristics of Rhodeus pseudosericeus (Pisces: Acheilognathinae) was investigated at the Heukcheon (River), Yangpyeong-gun, Gyeonggi-do, Korea from January to July in 2012. This fish prefers heavily vegetated stagnant pool with Phragmites japonica and Salix koreensis and area with high proportions of sand and mud. The standard length of the population indicated that 13~22 mm group is 0-year old, 30~45 mm group is 1-year old, 45~55 mm group is 2-year old and 45~70 mm group is more than 3-year old (June in 2012). The sex ratio of female to male was 1 : 0.80. The spawning season was from March to June with water temperatures in the range $11.0{\sim}26.2^{\circ}C$. The embryos were found with no egg mass in Unio douglasiae sinuolatus and the number of those was 1~22 ($5.8{\pm}5.51$). The number of the embryos found in each of the four parts of the mussel gill was 1~9 ($2.7{\pm}2.16$) in left outer, 1~2 ($1.5{\pm}0.71$) in left outer, 1~5 ($1.8{\pm}1.79$) in left outer and 1~22 ($5.8{\pm}5.51$) in left outer.