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수질성분 분포도를 이용한 서낙동강 수계 농업용수 수질평가

Estimation of Agricultural Water Quality Using Classification Maps of Water Chemical Components in West-nakdong River Watershed

박성태|이재생|정기열|김춘송|윤을수|강항원|김복진|고지연
한국환경농학회 (The Korean Society Of Environmental Agriculture)|2006.06|한국환경농학회지 (Agricultural and Environmental Sciences)|제25권 제2호|pp. 138-146

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참고문헌

주제분류농학

초록

오염부하가 심한 서낙동강 수계에서의 농산물 안전생산 및 건전한 농업환경유지를 위하여 수계내 오염원 및 수질을 조사하고 이를 수질성분 분포도로 작성한 결과는 다음과 같다.

Abstract

To understand the status of water quality and work out a suitable countermeasures in Seonakdong watershed which has poor agro- environmental condition because of severe point and non-point source pollution by popularized city and near sea, we investigated the pollution sources and water quality from ‘03 and ’05 and the results were mapped with GIS and RS for end-users's convenient comprehense and conjunction of water quality and geological data. The most degraded tributary was Hogeo stream which was affected directly by highly popularized Gimhae city, the main pollution source of the watershed. The pollution of tributaries in watershed increased the T-N of main body that reached over 4 mg/L during dry season. Pyeonggang stream and the lower part of main water way were suffered from high salt contents induced near sea and the EC value of those area were increased to 2.25 dS/m. The delivered loads of T-N and T-P were largest in Joman river as 56% and 61% of total delivered loads from tributaries because of lots of stream flow. When Management mandate for irrigation water in Seonakdong river watershed was mapped for estimating integrated water quality as the basis of classification of EC and T-N contents in water, Hogeo and Shineo catchments were showed the requiring countermeasures zone against nutrients hazard and Pyeonggang catchment was the vulnerable zone against nutrients and salts hazard. As the results, Seonakdong watershed had very various status of water quality by characteristics of catchments and countermeasures for improving water quality and crop productivity safely should changed depend on that.

참고문헌 (21)

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