| Title |
Functional Assessment for Preservation and Restoration of Wetland-type Old River Channel:Mangyoung River |
| Authors |
홍일(Hong, Il) ; 강준구(Kang, Joon Gu) ; 강수진(Kang, Su Jin) ; 여홍구(Yeo, Hong Koo) |
| DOI |
https://doi.org/10.12652/Ksce.2012.32.4B.213 |
| Keywords |
습지형 구하도;폐천;기능 평가지표;만경강 wetland-type old river channel;abandoned channel;functional assessment index;mangyoung river |
| Abstract |
Old river channels have been formed by engineering a straight channel in Korea. This can be classified as wetland-type or land-type. The wetland-type old river channel uses parts of agricultural water supply. However, the channels have been neglected since there are problems associated with poor water quality, reduced water level, ecosystem disturbance, etc. Thus, river maintenance through preservation and restoration of old river channel can be very effective in watershed management. To achieve this, functional assessment of wetland-type old river channel is a priority need. This study applied the wetland-type channel in Mangyoung river for functional assessment. It was formed these channels with regard to the following four major criteria (Natureless, Habitat, Water-friendliness and Water quality) and 21 indices. The indices managed by measuring depending in weights. Consequently, wetland-type channel in Mangyoung river was in good condition both natureless and habitat, while it was a fragile environment in water-friendliness and water quality. In particular, the areas where it has insufficiency water and water suffering from eutrophication needs urgent improvement. This results will be used to utilize wetland-type old river channel as watershed management. |