Abstract
To compare the stream habitats according to the characteristics of watershed, this study has classified 52 streams in Nakdong River basin into hill, rural, urban streams and then analyzed the river habitats by characteristics. Hill streams show spatial diversity due to sharp winding and tilting of streams. The rural upstreams show the similar characteristics to those of hill streams, yet mid-to-downstreams show high ratio between waterway width and river width due to the construction of irrigation systems such as intake weir. Urban streams show constant ratio between waterway width and river width due to the construction of safe levee and the river management in the simple form of levee-riverside-revetment-waterway(double section trapezoid), which results in low spatial diversity. The river habitats according to the characteristics of watershed were compratively analyzed. The results suggest the section in which the river maintenance was implemented show the big and constant ratio between waterway width and river width. The section with natural flow show the diverse ratio between waterway width and river width, which will lead to the diversity of habitats and healthy eco-system.
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