Korean Journal of Soil Science and Fertilizer (한국토양비료학회지)

Korean Society of Soil Science and Fertilizer (한국토양비료학회)
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Effects of Slope Gradient and Rainfall Intensity on Soil Losses with Rainfall Simulator Experiment

경사도와 인공강우 강도가 토양유실에 미치는 영향

  • Lee, Gye-Jun (National Institute of Crop, Rural Development Agency) ;
  • Lee, Jeong-Tae (National Institute of Crop, Rural Development Agency) ;
  • Ryu, Jong-Soo (National Institute of Crop, Rural Development Agency) ;
  • Oh, Dong-Shig (National Institute of Crop, Rural Development Agency) ;
  • Kim, Jeom-Soon (National Institute of Crop, Rural Development Agency)
  • 이계준 (농촌진흥청 국립식량과학원) ;
  • 이정태 (농촌진흥청 국립식량과학원) ;
  • 류종수 (농촌진흥청 국립식량과학원) ;
  • 오동식 (농촌진흥청 국립식량과학원) ;
  • 김점순 (농촌진흥청 국립식량과학원)
  • Received : 2012.10.26
  • Accepted : 2012.11.30
  • Published : 2012.12.31
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Abstract

This research was carried out to investigate the interaction effect of slope gradient and rainfall intensity on soil loss with rainfall simulator. The soils used in this experiment were saprolite, Chahang series which distributed extensively in Daegwanryong. Slope gradient applied was 0.5, 7, 15 and 30%. Rainfall intensity applied was 20, 60 and $90mm\;hr^{-1}$. The result obtained can be summarised as follow; Overall, Chahang series suffered more losses than saprolite. Chahang series shows the immediately large increase of soil loss with the increasing soil gradient and rainfall intensity. However, saprolite shows a little increasing loss up to 7% gradient and abruptly increasing loss logarithmically over 7% gradient in soil slope. In combination of slope gradient 15, 30% and rainfall intensity 60, $90mm\;hr^{-1}$ processing, both soil erosion happened significantly. And there was no significant difference between the two soils. Because Chahang series have the danger of soil loss with low slope gradient and rainfall intensity, we should give greater attention to soil management in Chahang series.

대관령 지역에 많이 분포하고 있는 두 토양, 석비레 (Saprolite) 토양과 차항통 (Chahang series) 토양을 사용하여 경사면이 균일한 나지 토양에서 경사도 0.5, 7, 15, 30%와 강우강도 20, 60, $90mm\;hr^{-1}$의 조합으로 12처리를 하여 토양 유실에 대한 인공강우실험을 하였다. 그 결과를 요약하면 다음과 같다. 석비레 (Saprolite) 토양에서는 경사도 7% 까지는 토양유실이 적게 나타나다가 7% 이상의 경사면에서는 급격하게 증가하였고 차항통 (Chahang series) 토양은 경사도, 강우강도 증가와 함께 유실이 점증하였고, 경사도와 강우강도가 적은조합에서도 유실이 다소 크게 나타났다. 경사도 15, 30%와 강우강도 60, 90mm/hr의 조합처리에서는 두 토양 모두 토양유실이 크게 일어나고, 두 토양 간에 큰 차이는 없었다. 차항통 (Chahang series) 토양은 경사도, 강우강도가 적은 조합에서도 유실이 일어날 위험성이 크므로 토양관리에 주의를 요한다.

Keywords

References

  1. Bouyoucos, G.J. 1953. The cray ratio as a criterion of suceptibility of soils to erosion. Jour. Am. Soc. Agr. 27:738-741.
  2. De Ploey, J.J. Savat, and J. Moeyersons, 1976. The differential impact of some soil loss factors on flow, runoff creep and rainwash, Earth Surf. Processes Landforms :151-161.
  3. Duly, F.L. and Domingo, C.E. 1932. The effect of the degree of slope on runoff and soil erosion. Jour. Am. Soc. Agr. 45:352-360.
  4. Ekern, P.C. 1935. Problems of raindrop impact erosin. Agr. Eng. 34:23-25.
  5. Ellison, W.D. and C. Pomereate. 1944. Rainfall applicater. Agr. Eng. 25:22-23.
  6. Emily, T. Essig, Corrado Corradinib, Renato Morbidellib, Rao S. Govindaraju. 2009. Infiltration and deep flow over sloping surfaces: Comparison of numerical and experimental results. Journal of hydrology. 374:30-42. https://doi.org/10.1016/j.jhydrol.2009.05.017
  7. Etse, S.K. and J.L. M.P. de Lima. 1987. Determination and analysis of surface depression storage and overland flow of different tillage models as a function of slope and rainfall intensity. M. Sc. Thesis, Agricultural University Wageningen, pp. 1-43.
  8. Govers, G., 1991. Field study on topographical and topsoil effects on runoff generation, Catena. 18:91-111. https://doi.org/10.1016/0341-8162(91)90009-M
  9. Lehrsch, G.A., F.D. Whisler and M.J. M. Romkens. 1988. Selection of a parameter describing soil surface roughness. Soil Sci. Soc. Am. J. 52:1439-1445. https://doi.org/10.2136/sssaj1988.03615995005200050044x
  10. Li Chen and Michael H. Young, 2006. Green-Ampt infiltration model for sloping surfaces. Water Resources Research. 42:1-9.
  11. Meyer, L.D. 1960. Use of the rainulator for runoff plot research. Soil Sci. Soc. Am. Pro. 24:319-321. https://doi.org/10.2136/sssaj1960.03615995002400040031x
  12. Meyer, L.D. and W.H. Wischmeier. 1969. Mathematical simulation of the process of soil erosion. Trans. Am. Soc. Agr. Eng. 754-758.
  13. Middleton, H.E. 1930. Properties of soils which influence soil erosion. U.S.D.A. Tech. Bull. No. 178.
  14. Mitchell, J.K. and Jr. B.A. Jones. 1976. Micro-relief surface depression storage: analysis of models to describe depthstorage function. AWRA Water Resources Bull. 12:1205-1222. https://doi.org/10.1111/j.1752-1688.1976.tb00256.x
  15. Mitchell, J.K. and Jr. B.A. Jones. 1978. Micro-relief surface depression storage: changes during rainfall events and their application to rainfall-runoff models. AWRA Water Resources Bull. 14:777-802. https://doi.org/10.1111/j.1752-1688.1978.tb05579.x
  16. Oh, W.K., I.S. Ryu, and Y. S. An. 1973. Soil Conservation and Maintenance of Fertility on Upland Soils. Korean J. Soil. Sci. Fert. 6(1):53-60.
  17. Philip, J.R., 1991. Hillslope infiltration; planar slopes, Water Resour. Res. 27(1):109-117. https://doi.org/10.1029/90WR01704
  18. Posen, J., 1984. The influence of slope angle on infiltration rate and Hortonian overland flow volume. Z. Geomorphol. N. F. 49:117-131.
  19. Ribolzia, O., J. Patinb, L. M. Bressonc, K. O. Latsachackd, E. Moucheb, O. Sengtaheuanghounge, N. Silveraf, J. P. Thiébauxd, C. Valenting. 2011. Impact of slope gradient on soil surface features and infiltration on steep slopes in northern Laos. Geomorphology. 127:53-63. https://doi.org/10.1016/j.geomorph.2010.12.004
  20. Schmidt, H.L. and L.B. Leopold. 1964. Relative erodibility of three loss derived soils. Soil Sic. Soc. Am. Proc. 28:570-577. https://doi.org/10.2136/sssaj1964.03615995002800040035x
  21. Whang, E. 1966. Studies on the soil erosion of the various type bench terrace composed of the granite soil. Korean Soc. Agr. Eng. 3:23-30.
  22. Wischmeier, W.H. and D.D. Smith. 1978. Predicting Rainfall Erosion Losses -A Guide to Conservation Planning. USDA Hand Book. 537, Washington, D.C.
  23. Wischmeier, W.H. and H.A. Walter. 1959. A rainfall erosion index for a Universal soil loss equation. Soil Sci. Soc. Am. Proc. 23:246-249. https://doi.org/10.2136/sssaj1959.03615995002300030027x
  24. Wischmeier, W.H. and J.V. Mannering. 1965. Effect of organic matter content of the soil on infiltration. J. Soil and Water Cons. 20:150-152.
  25. Wischmeier, W.H. and J.V. Mannering. 1969. Relation of soil properties to its erodibility. Soil Sci. Soc. Am. J. 33:131-137. https://doi.org/10.2136/sssaj1969.03615995003300010035x
  26. Woo, B.M. 1974. Studies on the development of accelerating measures of establishment of vegetation on bare slopes. J. Korean For. Soc. 24:1-24.
  27. Woo, B.M. 1975. Studies on soil conservation effects of the straw-mat mulching (III) - Effects of the mat structures and Its practicality. J. korean For. Soc. 27:5-14.

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