• Water for future
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• v.49 no.7
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• pp.37-42
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• 2016

• Proceedings of the Korea Water Resources Association Conference
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• 2009.05a
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• pp.1979-1983
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• 2009

DMZ권은 지난 반세기 동안 출입이 통제된 덕분에 다양한 생물종의 서식공간이자 생명벨트로 형성되어 있다. 서부 DMZ권에는 한강 하구와 임진강 유역의 성동 습지와, 장단 습지, 문산 습지, 임진각 습지 및 초평도 습지가 있으며, 이곳에는 멸종위기종 1급인 황새, 노랑부리저어새, 저어새 등 8종과 2급인 큰고니, 개리 등 21종, 황조롱이, 매, 흑두루미 등 천연기념물 22종이 서식하고 있다. 본 연구에서는 서부 DMZ권을 중심으로 현지 조사를 통해 하천환경과 습지 현황을 조사하였다. 임진각 습지는 임진강의 건천화 때문인지, 아님 썰물 때문인지 유량은 그리 많지 않았다. 덕분에 갯벌이 많이 드러나고 재두루미와 개리 등이 눈에 뜨였다. 장단반도는 절반은 농경지, 절반은 갈대 군락지이다. 군락지에는 갈대뿐만 아니라 달뿌리풀, 갯버들도 서식하고 있었다. 농경지에는 재두루미 가족이 섭식하고 있고 임진강에는 기러기 약 2천 이상이 발견되었으며, 고라니도 다수가 조사되었다. 최근에는 136마리가 조사되었다. 초평도의 습지에서는 물새가 탐조되었다. 습지는 생태계의 훌륭한 서식처의 역할을 하며, 수질 개선과 기후 조절 기능도 갖고 있으며, 생태 관광에도 기여를 하고 있음이 밝혀졌다.

• Environmental engineer
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• v.23 s.237
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• pp.32-33
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• 2006

• Water for future
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• v.49 no.7
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• pp.18-25
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• 2016

• Proceedings of the Korea Water Resources Association Conference
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• 2010.05a
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• pp.529-535
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• 2010

• Journal of Wetlands Research
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• v.6 no.1
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• pp.149-166
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• 2004

Water quality and ecological environment in the Han River estuary was analyzed using the longterm water quality monitoring data from National Fisheries Research and Development Institute (NFRDI) and the existing data collected in this area. Based on the salinity distribution and changes of current direction in the lower Han River and its estuary, boundaries of the estuary were identified and also, distribution patterns of the phyto- and zooplankton, benthos, ichthyoplankton and fish were discussed related with the salinity changes in the macrotidal subestuary of Han River. Seasonal and spatial distribution of salinity suggested that the direct impact of freshwater be limited to the Incheon North Harbour all the year round and even extended to the southern area of Gyunggi Bay near Palmi island during limited time, usually in summer. Upper limit of salt water intrusion through the Han River is likely to be Singok underwater dam located Gimpo, Gyunggi Province, and normally limited to much lower part of the river, Jeonryuri, Gimpo. Biological boundaries of the Han River estuary exceeded the physical boundaries based on the salinity distribution. Many estuarine species in plankton and fish were found at the totally freshwater or saltwater depending on the seasons and tidal cycles. Some estuarine ichthyoplanktons showed extremely limited distributions in the estuary whereas adult fish revealed wide ranges of salinity adaptation. Critical environmental issues in the Han River estuary and its drainage basin are likely to be 1) pressure on development-promoted district for new town in the drainage area of the estuary, 2) reduction of tidal flat by reclamation, 3) pollutant input through river from municipal sewages and industrial wastes, and 4) ecological barrier between river and terrestrial systems by the military wire fence and riverside road.

• Journal of Wetlands Research
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• v.14 no.2
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• pp.277-288
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• 2012

Estuary is unique habitat ground under substantial changes of water quality, river side, bed material, and micro topography. Construction of SinGok underwater weir with excessive dredging for downstream of weir has changed hydraulic conditions of Han River. This study investigates spatial changes of estuary and expansion process of vegetation on sandbar for JangHang estuary in Han River through analysis of physical and ecological characteristics. As a result of investigation, we found that area of sandbar in JangHang estuary is expanded six times compared between 1985 and 2006, and area of Phragmites australis is gradually decreased while area of Salix subfragilis Anderson. is increased. Also the analysis result of soil layer shows that the Jang-Hang wetlands are created by effect from river, and woody plants are settled from middle part of wetlands, then spread to upper and lower part of wetlands.

• Journal of Wetlands Research
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• v.26 no.3
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• pp.285-297
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• 2024

This study, conducted in Geolpo-dong and Gamjeong-dong near Gimpo-Hangang New Town, examines an area adjacent to the Han River estuary, a major wintering ground for migratory birds. Over 59 surveys from October 2015 to March 2022 in four representative rice fields (sites A-D) recorded 44,942 individuals from 32 genera and 72 species. Site D, a large area near the Han River, exhibited high species diversity. Despite lower diversity in areas under development (sites A, B, C), ongoing species influx and utilization persist. The study focuses on Anser fabalis, a species predominantly utilizing rice fields, and identified their distribution characteristics. The analysis revealed 162 instances of population influx, with over a 30-fold increase observed across 39 surveys conducted over a 30-month period (October to March, '15~'22). The area, a key wintering site for migratory birds of Janghang Wetland, about 5 km from feeding sites, is heavily utilized by migratory geese, indicating the region's high value considering migration distance and anticipated continuous bird influx despite urban expansion. Therefore, future developments should preserve ecological corridors and connected stepping stone habitats to not only preserve existing habitats but to secure alternative feeding sites, ensuring smooth movements and mitigating habitat loss.

• Proceedings of the Korea Water Resources Association Conference
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• 2020.06a
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• pp.218-218
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• 2020

우리나라의 하천은 홍수방어와 토지이용을 목적으로 제방을 설치하고 하도를 직강화화 시켰으며, 저수로와 홍수터를 분리하는 단면의 조성 그리고 하천의 홍수터를 농경지나 공원 및·주차장 등으로 활용하는 등 홍수터를 인위적으로 고착화시켜왔다. 더욱이, 상류의 댐 및 저수지에서 방류량을 조절함으로써 중소규모의 홍수가 줄어드는 등 하천 흐름의 변화를 나타내는 유황이 단순해져 하상변화가 감소되고 건조화됨으로 인하여, 식생침입 등에 따른 하천 수림화가 진행되고 이로 인하여 하천이 습지라고 볼 수 없는 육역화 현상이 심화되고 있는 현실이다. 따라서 자연과 인간이 공존하기 위한 올바른 하천환경 관리를 위하여 해당하천에 대한 육역화의 원인규명 및 대책수립이 필요하다. 본 연구에서는 1986년에 신곡 수중보가 건설되었고 이로인하여 하류의 수리적 환경 등의 여건변화로 사주의 변화가 급격히 진행된 한강의 장항습지를 대상으로 하천 육역화 현황 분석 및 외국의 하천 육역화 복원사례를 통하여 장항습지에서의 복원방안을 제안하였다. 장항습지는 한강하구를 향하여 우안으로 가늘고 길게 형성된 사주로서, 본 연구에서는 종단길이 약 7.5km(신곡수중보~일산대교)를 대상으로 하였으며, 조사구간 내 사주의 폭은 최장 약 500m, 최단 약 60m 정도이다. 장항습지의 경년별 면적비교 결과, 장항습지는 1985년대비 현재 약 11.7배로 확대되었으며, 특히 2016년도에 급격히 증가된 것으로 분석되었다.

• Journal of Wetlands Research
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• v.18 no.3
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• pp.282-285
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• 2016

Peregrine falcon (Falco peregrinus) are listed as endangered species and Natural monument #323 in Korea, and this study examined the possibility of extinct of peregrine falcon in Jang Hang wetland near Han river using with the application of Population Viability Analysis (PVA) technique. In Jang Hang wetland areas population was monitored during 1999-2005 averaging 10.8 individuals and PVA analysis was done for the 5 years (2015-2020) using the average population size. Using the initial population was estimated 20% of extinct rate during the time. This estimation was quite low considering water pollution and loss of habitat. Also PVA only used population size lacking in other life history information. Nonetheless falcon population can be in risk of extinction if the current construction of crossovers in the river, cement bank are maintained. Long term information regarding life history needs essential.