KCID journal (한국관개배수논문집)

Korean National Committee on Irrigation and Drainage (한국관개배수위원회)
권호 표지

Comparison of Non-Point Pollution Occurrence by Amount of Fertilizer Applicetion from Sandy Loam Alpine Fields which Cultivetes Poteto and Radish in Korea

감자와 무를 재배하는 사질양토 고랭지 밭의 시비량에 따른 비점오염 발생량 비교

  • 최용훈 (강원대학교 농업생명과학대학 지역건설공학과) ;
  • 원철희 (강원대학교 농업생명과학대학 지역건설공학과) ;
  • 박운지 (강원대학교 농업생명과학대학 지역건설공학과) ;
  • 신민환 (강원대학교 농업생명과학대학 지역건설공학과) ;
  • 신재영 (강원대학교 농업생명과학대학 지역건설공학과) ;
  • 이수인 (강원대학교 농업생명과학대학 지역건설공학과) ;
  • 양희정 (국립환경과학원 한강물환경연구소) ;
  • 최중대 (강원대학교 농업생명과학대학 지역건설공학과)
  • Published : 2012.06.29
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Abstract

This study was performed to monitor the runoff of sandy soils on alpine uplands between March 2008 and December 2009, and assess non-point source pollution load. The fields were used to cultivete poteto in 2008 and radish in 2009. The fertilizers used in 200S, compared to those used in 2009, contained 2.1 times of nitrogen, 1.9 times of phosphorous, and 2.3 times of potassium. In 2008, the annual pollution load indiceted SS 2,908.47kg/ha/yr, COD 67.95kg/ha/yr, BOD 50.72kg/ha/yr, TN l3.29kg/ha/yr, and TP 9.97kg/ha/yr. In 2009, the annual pollution load indiceted SS 3,908.34kg/ha/yr, COD 225.04kg/ha/yr, BOD 156.96kg/ha/yr, TN 18.88kg/ha/yr, and TP 36.41kg/ha/yr. The amount of fertilizers used was about twice greeter in 2008, but the amounts of TN in pollution load per unit of rainfall were similar by 0.031kg/ha/mm to 0.029kg/ha/mm, whereas the amounts of COD (0.16kg/ha/mm to 0.35kg/ha/mm), BOD (0.12kg/ha/mm to 0.24kg/ha/mm), and TP (0.023kg/ha/mm to 0.057kg/ha/mm) doubled in 2009. We can infer thet the surface covering by the growth of crop mainly affected the transport of T-N through the subsurface flow to reduce non-point source pollution.

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