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초록
AI-Helper 아이콘AI-Helper

본 연구는 2012년 5월부터 2015년 12월까지 북한강과 남한강의 유입부를 포함하는 팔당호의 5개 지점에서 시공간적 수질 변동성을 강우 수문학과 비교 고찰하였다. 조사기간 동안 기초 수질요인들의 변동은 계절적 영향이 컸다. 특히, 수온성층은 수심이 깊은 댐 부근에서 형성되었고, 연도에 따라 빈산소 장기화도 관찰되었다. 질소(N) 계열 영양염의 증가는 유량이 빈약할 때 나타났고, 이때 $NH_4$는 하수 처리수의 영향을 크게 받아 $NO_3$와 상반되는 경향을 나타내었다. 인(P)의 증가는 유량이 크거나 극심한 가뭄이 지속될 때이었고, P 영양염 결핍도 빈번하게 관찰되었다. Chl-a의 증감은 유량 변동과 역상관 관계를 보였고, 그 값이 높을 때 AGP 값은 낮았다. 팔당호의 수질 변동성은 유역으로부터 하수 처리수(총량: $472{\times}10^3m^3d^{-1}$)의 오염원을 기반으로 한 유입, 방류 및 취수의 패턴에서 직간접적 관련성과 그 영향을 찾을 수 있었다. 또한 수질의 시공간적 변동 과정에서 기상(장마, 태풍, 이상강우 및 폭염더위) 수문(유량과 수위)학적 인자는 펄스, 희석, 역류, 흡수, 농축 및 침전 등 형태로서 작용하였다. 하천형 저수지인 팔당호의 수질 변동은 매우 역동적이며, 국내 최대 상수원의 오염 수준을 경감하기 위한 실효 대책으로 기상 수문에 기초한 육수학적 조사연구와 P-free 하수 처리 정책 실현의 필요성을 제안한다.

Abstract AI-Helper 아이콘AI-Helper

This study explored spatiotemporal variability of water quality in correspondence with hydrometeorological factors in the five stations of Paldang Reservoir located in the Han River during 4 years from May 2012 to December 2015. Variability of basic water quality factors were largely related with se...

주제어

질의응답

핵심어 질문 논문에서 추출한 답변
팔당호의 주요 유입원은 무엇인가? 7일)로서 전형적인 하천형 저수 지이다 (Table 1). 주요 유입원은 충주호 (남한강 본류)와 청평호 (북한강 본류)의 방류수로서 연계 댐 시스템의 합류점에 위치하여 그 영향을 최종적으로 받고 있다 (Fig. 1).
팔당호의 특징은 무엇인가? 한강 하류에 댐을 건설하여 형성된 팔당호는 수력발전과 서울시·수도권 지역의 각종 용수를 공급하는 국내 최대 상수원 (4,100×10 3 d -1 취수, 2016년 기준)이며, 지리· 지형적으로 남한강과 북한강 그리고 경안천이 합류하는 특수한 위치를 보여준다. 수계의 구조적 측면으로 볼 때, 한강은 댐·보의 인위적 교란 영향이 크게 가해진 조절하 천에 해당한다.
수질과 생태계의 변동성과 밀접하게 관련된 것은 무엇인가? , 2016). 수질과 생태계의 변동성에는 무기 혹은 유기물 질의 화학적 영향과 함께 강수량과 유량을 중심으로 한 다양한 기상·수문학적 요인의 작용도 밀접하게 관련되어 있다 (Thornton et al., 1990; Parks and Baker, 1997; Wetzel, 2001; Winston and Criss, 2002).
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