Proceedings of the Korea Water Resources Association Conference (한국수자원학회:학술대회논문집)
- 2006.05a
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- Pages.1586-1590
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- 2006
Estimation of Upland Cropping Management Factor for predicting Soil Loss in Saemangeum Watershed
새만금 유역의 토양유실량 예측을 위한 밭 토양의 작물경작인자 산정
- Published : 2006.05.18
Abstract
In order to calculate the actual erosion according to the universal soil loss equation (USLE) and to estimate the impact of land use on soil erosion in Saemangeum, it is important to know the C-factor. Based on the USLE crop-growth stages, the cover-management C-factors were calculated for the main crop and crop rotation systems by National Institute of Agricultural Science and Technology. Combining this result with statistical data about crop cultivation area and crop rotation systems, C-factors of each administrative district in Saemangeum watershed were calculated. The range of C-factors were between 0.28 and 0.35. High C-factor value was obtained with Gimje (C = 0.35) and small C-factor values were found in Wanju (C = 0.28) and Jeongeup (C = 0.29). With this result, calculated annual soil loss was 2,804,483 ton per year. Because of the lack of sufficient statistical data about crop rotation systems, further studies are required on collecting field survey data.