• Korean Journal of Environmental Biology
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• v.22 no.1
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• pp.220-226
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• 2004

The restoration effects in two sorts of forests created and managed on the bases of ecological principles in Sihwa industrial complex and Mt. Surak respectively were evaluated in both viewpoints of species composition and diversity. Species composition of the forests created based on the ecological design was move similar to that of the natural forests compared wit h the forests constructed by applying the landscape architectural method. The increased species diversity in the ecologically created forest reflected the effect as well. Black locust plantation managed by applying the ecological principle showed move similar species composition to the surrounding natural forest than the forest left without any management. Furthermore, the former forest showed higher species diversity than the latter one. The methods, which create and manage a forest based on ecological principles, revealed several problems, such as lack of specialty of project operators and inspecting officers, construction regulations without the ecological background, absence of the endemic young trees to be introduced in diverse natural environment, etc. Preparation of guidance for ecological planting and systematic environmental education including revision of construction regulation were recommended as the measures to solve such problems.

• Ecology and Resilient Infrastructure
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• v.6 no.1
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• pp.1-11
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• 2019

This study performed the impact of ecological waterway on fish community in a reach of the Dal River, Korea. Fish monitoring revealed that 9 fish species are dominant, namely Zacco platypus, Coreoleuciscus splendidus, Zacco koreanus, Pungtungia herzi, Acheilognathus yamatsutae, Rhinogobius brunneus, Tanakia signifer, Gobiobotia macrocephala, and Pseudopungtungia tenuicorpus, and account for 95% of the total fish community. The River2D model was used for the computation of the flow and the HSI model for the habitat simulation. The restoration of the waterway performed through the small dam removal, the formation of the pool-riffle structure, and the change of the bed elevation and width. Simulation results indicated that the restoration of the ecological waterway effects significantly increased by about 16% for the WUA (Weighted Usable Area) of the total fish community in optimal ecological flow conditions ($Q=7.0m^3/s$). The restoration of the ecological waterway is more advantageous to fish community.

• Landscaping Tree
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• s.88
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• pp.26-28
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• 2005

• Journal of Korea Water Resources Association
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• v.51 no.5
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• pp.461-470
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• 2018

Beyond river restoration focused on the inside region of main streams up to now, the river restoration including the outside region of streams has been started recently. As a part of this attempt, the restoration of abandoned rivers has been tried, but the development of a suitable model to quantitatively assess the improvement of hydraulic and ecological connectivity is not still satisfying. In this study, a grid - based hydraulic analysis model to evaluate the recovery of ecological connectivity through the restoration of abandoned rivers has been developed. In order to examine the applicability of this model, the ecohydaulic connectivity of the Cheongmi River Project area in Notap region was evaluated. This model can promptly and simply analyze the temporal and spatial distribution of the hydraulic and ecological characteristics, and it can be used as a appropriate tool to assess the hydraulic and ecological connectivity in the future.

• Journal of Wetlands Research
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• v.15 no.3
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• pp.317-328
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• 2013

The aim of this study is to compare the effects of the maintenance water supply methods on the ecological restoration of 5 urban streams such as Mugeo cheon, Yaksa cheon, Yeocheon cheon, Myeongjeong cheon and Cheokgwa cheon in Ulsan metropolitan city. Water quality of the streams have been innovatively improved and the ecosystems have gradually been restored by supplying maintenance water constantly. However, we found that if the maintenance water was in a state of higher salinity or low quality, even enough supply was not helpful and even harmful for ecological restoration. We confirmed that the most important things to create or maintain from the urban stream to the ecological stream are that facilities like a walkway construction should be installed at least, supplying appropriate maintenance water, and a connection with the main stream.

• Journal of the Korean Society of Environmental Restoration Technology
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• v.24 no.4
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• pp.47-60
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• 2021

This study was conducted to classify quality attributes for quality elements of public service targeting Gochang Jayeonmadang and analyze their impact on resident satisfaction and dissatisfaction by each service quality element by using the Kano model and the customer satisfaction coefficient and dissatisfaction coefficient of Timko(1993). As a result of the study, all 20 quality elements of public service were classified as one-dimensional attributes. Since the Jayeonmadang project restores the damaged natural environment and restores the ecosystem, it is judged that satisfaction is proportionately satisfied as the natural environment has been restored and the ecosystem has been restored. According to Timko (1993)'s analysis of customer satisfaction coefficient, it is believed that the most effective way to improve residents' satisfaction is to carefully establish and implement maintenance plans and to create a good environment to ensure that plants have settled.

• Proceedings of the Korean Society of Grassland Science Conference
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• 2003.06a
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• pp.169-170
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• 2003

• Proceedings of the Korea Water Resources Association Conference
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• 2015.05a
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• pp.650-650
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• 2015

최근 하천에는 치수와 하천생태를 고려한 수많은 하천복원기술이 개발 적용되고 있으나 국내 여건을 제대로 반영한 기술이 전무한 것이 현실이다. 또한 과도한 콘크리트 사용으로 인한 하천경관의 훼손 및 하천생태계에 악영향을 미치고 있으며 이와 더불어 강우량의 증대 및 집중호우 등 돌변하는 기후변화로 하천환경변화에 대한 적용 가능한 기술이 미비하다. 따라서 하천에 유해한 물질을 방출시키지 않고 하천환경 및 하천 생물의 생활사에 영향을 주지 않는 무 저독성 소재를 활용하여 기후변화에 대응이 가능하도록 수리적 안정성을 강화시키고, 생태적으로도 건강한 생태하천 복원 기술개발이 요구되는 실정이다. 본 연구에서는 무독성 소재를 활용하여 치수적으로 안정적이고 식물 및 어류 등 각종 생물의 서식이 가능한 하천호안공 기술을 개발하였으며, 개발된 호안기술은 창원시 마산회원구에 위치한 광려천 상류 일부구간에 시범적으로 적용하였고, 시공 전 중 후 물리, 화학, 생물 모니터링을 통하여 개발기술의 현장 적용성을 검증하였다.

• Proceedings of the Korean System Dynamics Society
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• 2006.11a
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• pp.49-69
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• 2006

본 논문은 선행연구인 정회성${\cdot}$전대욱 (2005)의 모형을 중심으로 선행연구에서 미처 다루지 못한 체계 변화 및 모형 확장 등에 대해 다루고 있다. 선행연구에서는 우리나라의 참게 복원사업에 대한 개체수 동태모형(population dynamics)과 자원 경제학적 이론모형을 근거로 생태${\cdot}$경제 통합시스템에 대한 동태모형을 도출하고 이를 통해 실증분석을 수행하였는데, 본 논문에서는 이 통합 모형에 있어서 밀도 제약(density restriction)과 공식 행위(cannibalistic behavior), 주민참여에 의한 환경개선 등 일련의 가정들에 대한 확장을 통해 보다 일반화된 통합체계 및 시스템 다이내믹스 분석을 제시한다. 이와 같은 모형 확장 및 파라메터의 내생화 등은 관련 피드백 루프들의 변형과 추가 등을 의미하며, 이와 같은 변화를 포함한 확장 모델을 제시하고 분석함으로써 참게 복원사업에 대한 보다 폭넓은 논의를 제시하고자 한다.

• Proceedings of the Korea Water Resources Association Conference
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• 2004.05b
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• pp.1340-1344
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• 2004

우리나라는 계절에 따라 수량의 변화가 커서 하천에 흐르는 유량의 변화가 심하지만 대부분의 하천은 갈수기에도 각각 일정량의 유량을 가지고 흘러간다. 그러나 충적층을 통과하는 소하천의 경우에는 계절에 상관없이 하천수가 지하로 침투하여 지표수가 감소한다. 소하천의 하천수량이 갈소되거나 건천화 될 경우 수질이 악화되거나 하천의 바닥이 드러날 경우 수중생태계는 파괴됨 것이다. 현재 지하수를 개발하여 부족한 하천수를 보충하는 방법을 모색하고 있으나 하천수의 지하침투가 심각한 경우에는 지하수만으로는 하천수의 부족분을 보충하는데 한계가 있다. 충적층을 통과하는 소하천의 침투수를 차단하는 방법으로 충적층에 불투수 매트를 설치하여 사용하면 하천의 건천화를 방지할 수 있으며, 충적층의 침투수를 차단하기 위하여 충적층위에 점토층을 설치하여 투수계수를 저하시키는 방법을 사용하면 부족한 하천유지용수를 확보할 수 있다. 따라서 충적층을 통과하는 소하천의 건천화를 방지하고 자연형 하천으로 개발할 경우 수중생태계 복원성이 우수하며, 자연경관의 복원에도 효과가 있다.