Chemical Characteristics of Rain Water at Ulsan Industrial Complex Area and Mt. Jiri Area

울산공단지역과 지리산지역 강우의 화학적 특성

  • Seo, Dong-Jin (Department of Forest Environmental Resources, Gyeongsang National Univ.) ;
  • Yun, Seok-Lak (Department of Forest Environmental Resources, Gyeongsang National Univ.) ;
  • Moon, Hyeon-Sik (Department of Forest Environmental Resources, Gyeongsang National Univ.) ;
  • Lee, Chong-Gyu (Department of Forest Resources, Jinju National Univ. (Insti. of Agric. & Life Sci.)) ;
  • Kim, Jong-Kab (Department of Forest Environmental Resources, Gyeongsang National Univ.)
  • 서동진 (경상대학교 산림환경자원학과 (농업생명과학연구원)) ;
  • 윤석락 (경상대학교 산림환경자원학과 (농업생명과학연구원)) ;
  • 문현식 (경상대학교 산림환경자원학과 (농업생명과학연구원)) ;
  • 이총규 (진주산업대학교 산림자원학과) ;
  • 김종갑 (경상대학교 산림환경자원학과 (농업생명과학연구원))
  • Received : 2010.08.09
  • Accepted : 2010.12.17
  • Published : 2010.12.31

Abstract

This study was carried out to investigate the characteristics of ions in rainwater by stem flow, through fall and rainfall in Pinus thunbergii forest in Ulsan industrial complex area and Mt. Jiri area. pH of rainwater in Ulsan industrial complex area was low as compared with those in Mt. Jiri area. EC of rainwater in Ulsan industrial complex area was mainly high and there was twice difference in stemflow and through fall as compared to Mt. Jiri area. The concentration of major ions in rainwater, especially $Ca^{2+}$ and $Mg^{2+}$ in stem flow were generally high at Ulsan industrial complex area, while anions were high in the order of ${SO_4}^{2-}>{NO_3}^{-}>Cl^-$ in both areas. There was a wide difference in ${SO_4}^{2-}$ concentration in the stem flow between both areas. ${SO_4}^{2-}$ from air pollutants will result into acidification of forest soils and thereafter cause damages on forest ecosystems.

울산공단지역과 지리산지역에서 소나무림의 강우로부터 산림내 유입되는 수간류, 수관통과우, 임외우의 이온성분을 조사하여 그 특성을 분석하였다. 울산공단지역에서는 pH가 지리산지역에 비해 수간류, 수관통과우, 임외우 모두 낮아 대기오염의 영향으로 추측할 수 있었다. EC는 수간류, 수관통과우, 임외우 모두 울산공단지역이 높았으며, 수간류와 수관통과우에서는 양지역이 2배 정도 차이가 있었다. 이온성분은 울산공단지역에서 대체적으로 높았으며, 수간류에서 지역차가 2배 이상 나타났으며, 특히 $Ca^{2+}$, $Mg^{2+}$ 이온의 농도가 지역간 차이가 높게 나타났다. 음이온 성분은 두 지역 모두 ${SO_4}^{2-}>{NO_3}^{-}>Cl^-$ 순으로 나타났으며, 지역간 차이가 가장 큰 이온은 ${SO_4}^{2-}$으로써 수간류에서 토양으로 유입되어 토양의 산성화를 초래할 뿐만 아니라 산림생태계 전반에 영향을 미칠 수 있다.

Keywords

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