Volume 4 Issue 4
Dec.  2011
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Dongkyun IM, Hyeongsik KANG. 2011: Two-dimensional physical habitat modeling of effects of habitat structures on urban stream restoration. Water Science and Engineering, 4(4): 386-395. doi: 10.3882/j.issn.1674-2370.2011.04.003
Citation: Dongkyun IM, Hyeongsik KANG. 2011: Two-dimensional physical habitat modeling of effects of habitat structures on urban stream restoration. Water Science and Engineering, 4(4): 386-395. doi: 10.3882/j.issn.1674-2370.2011.04.003

Two-dimensional physical habitat modeling of effects of habitat structures on urban stream restoration

doi: 10.3882/j.issn.1674-2370.2011.04.003
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  • Corresponding author: Hyeongsik KANG
  • Received Date: 2011-02-24
  • Rev Recd Date: 2011-09-09
  • River corridors, even if highly modified or degraded, still provide important habitats for numerous biological species, and carry high aesthetic and economic values. One of the keys to urban stream restoration is recovery and maintenance of ecological flows sufficient to sustain aquatic ecosystems. In this study, the Hongje Stream in the Seoul metropolitan area of Korea was selected for evaluating a physically-based habitat with and without habitat structures. The potential value of the aquatic habitat was evaluated by a weighted usable area (WUA) using River2D, a two-dimensional hydraulic model. The habitat suitability for Zacco platypus in the Hongje Stream was simulated with and without habitat structures. The computed WUA values for the boulder, spur dike, and riffle increased by about 2%, 7%, and 131%, respectively, after their construction. Also, the three habitat structures, especially the riffle, can contribute to increasing hydraulic heterogeneity and enhancing habitat diversity.

     

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