@inproceedings{6fec82bb21d84c5099f62e294da409fa,
title = "Development and application of SATEEC L module for slope length adjustment based on topography change",
abstract = "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 estimating USLE L factors at a watershed scale. 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 (over/under estimation). 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.",
keywords = "Field slope length, LS, SATEEC, Soil erosion, USLE",
author = "Hyunwoo Kang and Kim, {Ki Sung} and Younshik Park and Kim, {Nam Won} and Yongsik Ok and Jonggun Kim and Choi, {Yun Ho} and Lim, {Kyoung Jae}",
year = "2010",
language = "English",
isbn = "9781617388354",
series = "American Society of Agricultural and Biological Engineers Annual International Meeting 2010, ASABE 2010",
publisher = "American Society of Agricultural and Biological Engineers",
pages = "33--42",
booktitle = "American Society of Agricultural and Biological Engineers Annual International Meeting 2010, ASABE 2010",
address = "United States",
}