Journal of The Korean Society of Agricultural Engineers (한국농공학회논문집)

The Korean Society of Agricultural Engineers (한국농공학회)
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Experimental Investigation on Particle Size of Soils Erodible by Wind using Portable Wind Erosion Tunnel

소형 풍동을 이용한 토양의 풍식 가능 입경 분석

  • 김태완 (서울대학교 조경.지역시스템공학부 대학원) ;
  • 손영환 (서울대학교 조경.지역시스템공학과, 서울대학교 농업생명 과학연구원) ;
  • 민슬기 (서울대학교 조경.지역시스템공학부 대학원) ;
  • 이인복 (서울대학교 조경.지역시스템공학과, 서울대학교 농업생명 과학연구원) ;
  • 홍세운 ;
  • 김민영 (농촌진흥청 국립농업과학원 농업공학부 재해예방공학과)
  • Received : 2013.11.01
  • Accepted : 2013.11.08
  • Published : 2013.11.30
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Abstract

The purpose of this study was to investigate maximum and minimum grain size which eroded by wind according to soil and wind conditions, such as top soil water content, roughness, land slope, wind velocity and proportion of grain size under 0.84mm. For performing this study, portable wind erosion tunnel was designed and utilized during field test, which facilitated measuring actual wind erosions under artificially controlled wind conditions. In the result, maximum, minimum grain size had strong negative correlation with roughness while weak positive correlation with wind velocity. Also, Slope which means the effect of gravity also influence grain size erodible by winds. Based on these results, regression equations were suggested for predicting maximum and minimum grain sizes by using multiple linear regression analysis from SPSS 20.0. The equation for maximum grain size erodible by winds showed a good agreement with the observed data with $R^2$=0.896. Other equation for minimum grain size had $R^2$=0.777.

Keywords

References

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