농지-임야에서 발생하는 지표미생물 유출 특성 = Discharge Characteristics of Indicator Microorganisms from Agricultural-Forestry Watersheds

국문 초록 (Abstract)

농지-임야유역의 비점원으로부터 발생하는 미생물학적 오염물질 부하량을 추정하기 위하여, 농지와 임야가 혼합된 3개 시험유역에서 동일한 2개 강우사상에 대한 지표미생물 유출 특성을 조사하였으며 , 지표미생물항목은 대장균군(total coliform: TC), 분원성 대장균(Fecal coliform: FC), 대장균 (Escherichia coli: EC), 분원성 연쇄상구균(Fecal streptococcus: FS)이었다. 농지-임야 유역의 강우시 유량변화에 따라 토사유실로 인하여 부유물질 농도가 상당히 증가하였다. 지표미생물 농도는 유량 변화와 상당히 밀접한 관계를 보였다. 대부분 오염되지 않은 임야로 구성되어 있는 첫번째 유역의 강우유출수 TC EMC(Event Mean Concentration)는 5.3×10³ CFU/100 ㎖이었으며, FC EMC는 1.4×10³ CFU/100 ㎖, EC EMC는 1.1×10³ CFU/100 ㎖, FS EMC는 3.9×10² CFU/100 ㎖이었다. 임야유역과 농지유역이 혼합되어 있는 제 2 유역의 지표미생물에 대한 EMC는 TC EMC가 1.7×10？ CFU/100 ㎖, FC EMC가 8.5×10⁴ CFU/100 ㎖, EC EMC가 8.9×10⁴ CFU/ 100 ㎖, FS EMC가 3.4×10⁴ CFU/100 ㎖로 나타났다. 농지와 임야가 혼재되어 있으나, 유역면적이 큰 제 3 시험유역의 지표미생물에 대한 EMC는 TC EMC가 1.9×10？ CFU/100 ㎖, FC EMC가 9.6×10⁴ CFU/100 ㎖, EC EMC가 7.0×10⁴ CFU/100 ㎖, FS EMC가 5.1×10⁴ CPU/100 ㎖로 나타났다.

다국어 초록 (Multilingual Abstract)

To estimate microbial contaminant loading discharged from diffuse sources, rainfall runoff of six rainfall events were monitored at three study watersheds of forestry and agricultural land use. Monitored indicator microorganism constituents were total coliform (TC), fecal coliform (FC), Escherichia coli (EC), and fecal streptococcus (FS). Soil loss during elevated flow rate caused higher suspended solid concentrations. Indicator microorganism concentrations were closely related with flow rate. TC event mean concentration (EMC) from unpolluted forestry was 5.3×10³ CFU/100 ㎖, FC EMC was 1.4×10³ CFU/100 ㎖, EC EMC was 1.1×10³ CFU/100 ㎖ CFU/100 ㎖, and FS EMC was 2.9×10² CFU/100 ㎖. From a watershed with agricultural-forestry land use, TC EMC was 1.7×10？ CFU/100 ㎖, FC EMC was 8.5×10⁴ CFU/100 ㎖, EC EMC was 8.9×10⁴ CFU/100 ㎖, and FS EMC was 3.4×10⁴ CFU/100 ㎖. Mixed land use of agricultural-forestry with bigger area, TC EMC was 1.9×10？ CFU/100 ㎖, FC EMC was 9.6×10⁴ CFU/100 ㎖, EC EMC was 7.0×10⁴ CFU/100 ㎖, and FS EMC was 5.1×10⁴ CFU/100 ㎖.

목차 (Table of Contents)

• Abstract
• 요지
• 1. 서론
• 2. 연구재료 및 방법
• 3. 연구결과 및 토론
• 4. 요약 및 결론
• 감사의 글
• 참고문헌

참고문헌 (Reference)

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