토양침식에 미치는 토양표면상태의 영향
The Effects of Surface Condition on Soil Erosion
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초록
본 연구는 화강암지대인 복하천 유역의 사면에서 사면경사와 토양표면의 조건에 따른 침식과정의 특성을 밝히는 것으로 연구유역 산사면에 침식실험구를 설치하여 강우사상별 토양침식량을 모니터링하였다. 실험은 2004년 4월 24일부터 9월 20일까지 진행되어 총 12번 샘플링하였고, 그 결과는 다음과 같다. A index는 전체 강우량보다 강우강도에 따라 증가하며, A index와 총 침식량은 양(+)의 직선관계가 성립되며 그 상관관계도 매우 높다. 침식구의 Type별 침식량과 A index와의 회귀분석결과 총 침식량과의 결과에서와 같이 양의 직선관계가 성립되며, 자연노출인 상태보다 교란노출인 상태에서 침식량이 거의 두배에 달할 정도로 그 차이가 컸다. 동일한 노출지에서도 토양표면의 상태에 따라 침식량에 차이가 나므로 토양유실을 산정함에 있어서는 계속적인 현지에서의 실험과 보정이 필수적이다.
Abstract
We have monitered soil loss at experimental slope of Bokha River catchment in order to find out the effects slope angle and surface condition on soil erosion. 12 samples that were obtained from April 24, 2004 to September 20, 2004 were analyzed and gave us the facts as follows. A index increase with rainfall intensity does rather than precipitation and the relationship between A index and soil loss shows positive linear function. At disturbed bare surface condition of erosion plots soil loss occurred about double more than that at natural bare surface condition. Although surface of erosion plots is same bare, soil loss is different from surface conditions. Therefore it is required that the continuous experiment and correction are essential to calculate soil loss.
참고문헌 (21)
- 김진관, "토양피침식력(K-factor)의 다양성 연구", pp.37~46 (2004)
- 안상진, "충적하천에서 세굴과 유사특성", pp.9~15 (1995)
- 신영규, "대관령 지역의 토지이용이 오염물 유출부하량에 미치는 영향-USLE계열 모형 및 CN법의 적용", pp.91~104 (2004)
- 심순보, "GIS를 이용한 유역 토양 유실량 분석 -USLE의 강우에너지 인자 분석", pp.109~115 (2002)
- Bagarello,, "Plot-scale measurement of soil erosion at the experimental area of Sparacia", pp.141~157 (2004)
- and Roose, "Aggregate stablility as an indicator of soil susceptibility to runoff and erosion; validation at several levels", pp.133~149 (2002)
- and Le Bissonnais, "Field measurement of interrill erosion under different slopes and plot sizes", chaplot, pp.145~153 (2000)
- IGBP(International Geosphere-Biosphere Pro-gramme, "Land-use and land cover change" (1995)
- Karambiri, H, "Hydrol. Precess", pp.1495~1507 (2003)
- Luk S, "Effects of surface and slope gradient on runoff and soil loss in the loess region Soil Erosion Management and Application of Gro-graphical information System in the Loess Plateau Region" (1992), Science Press; Beijing; 66-79
- McCool, "Predicting soil erosion by water Aguide to conservation planning with the revised universal soil loss equation Department of Agriculture" (1997)
- and As?kin, "Effects of parent material and land use on soil erodibility", pp.774~776 (2003)
- A, "Soil erosion at three experimental sites in the Mediterranean", pp.1243~1256 (1999)
- Schaub, "Measurement of runoff and soil erosion on regularly cultivated fields in Switzerland-some critical considerations", pp.127~139 (1995)
- Shaozhong Kang, "Runoff and sediment loss responses to rainfall and land use in two agricultural catchments on the Loess Plateau of China", pp.977~988 (2001)
- Khan, "A new index for rainfall erosivity on a physical basis", sukha(vski), pp.51~57 (2002)
- Van Dijk, "A methodology to study rain splash and wash processes under natural rainfall", pp.153~167 (2003)
- Van de Giesen, "Scale effects of Hortonian overland flow and rainfall-runoff dynamics in a West african catena landscape", pp.165~175 (2000)
- Wendt, "Variability of runoff and soil loss from fallow experimental plots Soil Science Society of America Journal", pp.730~736 (1986)
- Wischmeier, "A soil erodibility monograph for farm land and conservation sites Journal of Soil and Water Conservation" (1971)
- Wischmeier, "aPredicting rainfall erosion losses: a guide to conservation planning" (1978)