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Development and Application of SATEEC L Module for Slope Length Adjustment Based on Topography Change
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 Title & Authors
Development and Application of SATEEC L Module for Slope Length Adjustment Based on Topography Change
Kang, Hyun-Woo; Kim, Ki-Sung; Park, Youn-Shik; Kim, Nam-Won; Ok, Yong-Sik; Kim, Jong-Gun; Choi, Yun-Ho; Lim, Kyoung-Jae;
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Severe sediment-laden problem has been the hot issue in Korea. It was assumed that agricultural activities and landslides were the primary causes of these problems in watersheds. The USLE-based systems have been widely used in soil erosion studies. However the GIS-based USLE modeling system has limitation in USLE L factors. In this study, the SATEEC L module was developed to reflect the slope length segmentations in the fields. The SATEEC L module was applied to the study watershed to analyze the effects of using the SATEEC L module on estimated sediment. As shown in the comparisons between SATEEC estimated sediment with SWAT values, the SATEEC GA-SDR module derives the SDR with reasonably acceptable accuracies. However, it is worthy to note that the soil erosion using the SATEEC L module for the study watershed was lower than that without using the SATEEC L module by 25%, although the SATEEC estimated sediment values with and without using L module match the SWAT sediment values with similar accuracies. This is because the SATEEC GA-SDR module estimates lower SDR in case of greater soil erosion estimation without the L module and greater SDR in case of lower soil erosion estimation with the L module. This indicates that the SATEEC input parameters, especially L factor, need to be prepared with care for accurate estimation of SDR at a watershed scale and for accurate evaluation of BMPs in the watershed.
USLE;SATEEC;Soil Erosion;Field Slope Length;LS;
 Cited by
일강우를 고려한 SATEEC R 모듈 적용성 평가,우원희;문종필;김남원;최재완;김기성;박윤식;장원석;임경재;

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