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River2D 모델을 이용한 섬진강의 생태유지유량 산정에 관한 연구
노경범 ( Kyong Bum Roh ),박성천 ( Sung Chun Park ),진영훈 ( Young Hoon Jin ),박명옥 ( Myoung Ok Park ) 한국물환경학회 2011 한국물환경학회지 Vol.27 No.6
The purpose of the present study is to estimate the ecological instream flow for conservation and restoration of fish habitat in running water ecosystem which has very important status for stream environment. Estimation of the ecological instream flow in the present study was carried out by application of a two-dimensional depth averaged model of river hydrodynamics, River2D model. It can model fish habitat in natural streams and rivers and assess the quality of physical habitat accoriding to the species preferences for habitat suitability. Zacco platypus and Zacco temmincki were selected as target fish species in the study area of the Seomjin river. The Habitat Suitability Criteria (HSC) developed by Sung et al. (2005) were used for target fish species, life stages and habitat conditions in the study. Weighted usable area (WUA) was computed by the River2D model considering preferences of target fish species for velocity, depth, and channel substrate. The result revealed that the ecological instream flow of 10.0 m3/s is needed to maintain the target fish habitat at each life stage in the river.