| Title |
Characteristics of Suspended Solids Export from Paddy Fields |
| Authors |
이경숙 ( Kyoung Sook Lee ) ; 정재운 ( Jae Woon Jung ) ; 최동호 ( Dong Ho Choi ) ; 윤광식 ( Kwang Sik Yoon ) ; 최우정 ( Woo Jung Choi ) ; 최수명 ( Soo Myung Choi ) ; 임상선 ( Sang Sun Lim ) ; 박하나 ( Ha Na Park ) ; 임병진 ( Byung Jin Lim ) ; 최강원 ( Gang Won Choi ) |
| Keywords |
Nonpoint source pollution; Paddy field; SS; Water quality |
| Abstract |
A five-year field monitoring was conducted to monitor characteristics of suspended solid (SS) export from paddy fields. The observed EMCs of SS ranged 1.2~517 mg/L (avg. 52.1 mg/L) during storm period. The concentration of SS during non-storm period were 1.1~349.5 mg/L (avg. 36.1 mg/L). Monthly load of SS was high during summer when rainfall amount was high. The load was higher than that of May when tillage effect is expected. There was no significant relationship between SS EMCs and rainfall or drainage amount. However, effects of rainfall and drainage were found to be significant for event load of SS. But, there was no apparent relationship between rainfall amount of cropping period and load of SS for that period. The observed SS load was 164.8~456.0 kg/ha (avg. 301.2 kg/ha) and mostly occurred during storm period. This study results also suggested that SS load estimation by USLE equation for paddy field could be overestimated, if not carefully handled. Monitoring studies for various climate, soil, and agricultural management are required to get better scope of SS export from paddy fields. |