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자료유형
학술저널
저자정보
저널정보
한국농공학회 한국농공학회논문집 한국농공학회논문집 제50권 제2호
발행연도
2008.1
수록면
20 - 26 (7page)

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A monsoon season monitoring data from June to September, 2005 of a small forested watershed located at the upstream of the North Han River system in Korea was conducted to analyze the flow variations, the NPS polu-tant concentrations, and the pollution load characteristics with respect to sampling frequencies. During the 4- 68% of annual T-N, NO3-N and T-P loads discharged. Flow rate was continuously measured with automatic velo-city and water level meters and 58 water quality samples were taken and analyzed. It was analyzed that the flow volume by random measurement varied very widely and ranged from 79% to 218% of that of continuous measure-ment. It was recommended that flow measurement of small forested watersheds should be continuously measured 3-N and T-P during the period were 2.114 mg/L, 0.836 mg/L, and 0.136 mg/L, respectively. T-N, NO3-N and T-P loads were sensitive to the number of samples. And it was analyzed that in order to measure the pollution load within the error of 10% to the true load, the rate of sampling frequency should be higher than 89.7% of the sample numbers that were required to compute the true pollution load. If it is compared to selected foreign re-10% error. It is unlikely in Korea and recommended that thorough NPS pollution monitoring studies are re-quired to develop the standard monitoring procedures for reliable NPS pollution quantification.

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