Distribution of Nutritive Salts and Organic Matters in the Coastal Area of East Sea

동해 연안역의 영양염과 유기물질의 분포

  • 이기성 (배재대학교 생물학과) ;
  • 고동규 (한양대학교 생물학과) ;
  • 허승 (한양대학교 지구해양학과) ;
  • 이영근 (한국원자력연구소 방사성동위원소 방사선응용연구팀) ;
  • 최청일 (한양대학교 지구해양학과) ;
  • 최영길 (한양대학교 생물학과)
  • Published : 1999.03.01

Abstract

To investigate the distribution of nutritive salts and organic compounds in six stations at the coastal area of East Sea, environmental factors, nutritive salts, organic matters and chlorophyll were analysed four times from July 1994 to April 1995. The value of BOD in Ulsan Chuyongam was the highest among 6 stations. The concentration of nutritive salts was generally high through the investigation period near Pohang and Ulsan Chuyongam. From the value of dissolved nutrient salts, the Chuyongam area seemed to be under hyper-eutrophication and the Changsengpo area under eutrophication. Suspended particulate matter (SPM) of 3~10${\mu}{\textrm}{m}$ in size was distributed up to 70% of total volume. The amounts of SPM and particulate organic matter (POM) were considerably high in Pohang and Ulsan, which seemed to be resulted from the input of pollutants of cities and factories nearby.

동해 연안에 위치한 대진, 갈남, 포항, 울산 등 4개 지역의 연안역을 대상으로 1994년 7월부터 1995년 4월까지 계절별로 4회에 걸쳐서 영양염과 유기물질의 분포에 관련된 환경요인, 영양염류, 부유성 유기물질 및 엽록소 함량 등을 조사하였다. BOD는 울산 처용암이 모든 정점 중에서 가장 높게 나타났으며, 영양염류의 농도는 근처에 오염원이 많은 포항과 울산의 처용암에서 전 조사기간 동안에 걸쳐 전반적으로 높았다. 특히, 처용암은 조사된 모든 영양염의 값이 월등히 높아 고도의 과영양해역임이 판명되었다. 울산의 장생포 지역도 비교적 높은 수치를 나타내 부영양해역에 속하는 것으로 나타났다. 부유성유기물질은 3~10${\mu}m$ 크기의 입자가 총부피의 70%를 차지하였다. 부유성 유기물질은 주변 도시와 공단으로부터 많은 오폐수가 유입되는 포항과 울산에서 높은 값을 나타내었는데 이는 주로 주변으로부터 유입되는 오폐수의 영향일 것으로 사료된다.

Keywords

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