| Title |
Necessity for Expansion of Total Phosphorus Management in the Geum River Watershed |
| Authors |
박재홍 ( Jae Hong Park ) ; 이재관 ( Jae Kwan Lee ) ; 오승영 ( Seung Young Oh ) ; 류덕희 ( Doug Hee Rhew ) |
| Keywords |
Total phosphorus; Trophic state; Water quality target; Watershed management |
| Abstract |
Total phosphorus was set as a target indicator to prevent eutrophication and algae growth, etc., in three major rivers (Nakdong River, Geum River and Yeongsang/Seomjin River) for the second phase (2011 ∼ 2015) in total maximum daily loads (TMDLs) system. However, total phosphorus management was restrictively introduced, i.e., upstream of the Lake Daechung, in the Geum River watershed. Total phosphorus concentration and trophic levels in downstream of the Lake Daechung (include Mangyeong and Dongjin rivers) were increased more than upstream. Therefore, it is necessary to expand total phosphorus management in all watersheds of the Geum River. If total phosphorus was managed in all area of the Geum River watershed, it is possible to decrease total phosphorus concentration and trophic levels, and solve the unbalanced water quality between up and downstream of the Lake Daechung. |