지원사업
학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
커뮤니티
연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
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초록· 키워드
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The purpose of this study was to evaluate effects of spatio-temporal changes in land uses and rainfall magnitude using the Soil and Water Assessment Tool (SWAT). Prior of application of the model to real-world problem, the model should be calibrated and validated properly. In most modeling approaches, the validation process is done assuming no significant changes occurring at the study watershed between calibration and validation periods, which is not proper assumption for agricultural watersheds. If simulated results obtained with calibrated parameters match observed data with higher accuracy for validation period, this does not always mean the simulated result represents rainfall-runoff, pollutant generation and transport mechanism for validation period because temporal and spatial variables and rainfall magnitude are often not the same. In this study SWAT was applied to Mandae study watershed in Korea to evaluate effects of spatio-temporal changes in landuses using 2009 and 2010 crop data for each field at the watershed. The Nash-Sutcliffe model efficiency (NSE) values for calibration and validation with either 2009 or 2010 was evaluated and the NSE value for calibration with 2009 and calibration with 2010 were compared. It was found that if there is substantial change in land use and rainfall, model calibration period should be determined to reflect those changes. Through these approaches, inherent limitation of the SWAT, which does not consider changes in land uses over the simulation period, was investigated. Also, Effects of changes in rainfall magnitude during calibration process were analyzed.
목차
등록된 정보가 없습니다.
참고문헌 (27)
참고문헌 신청
American Public Health Association(APHA) / 2005 / Standard Methods for the Examination of Water and Wastewater, 21st Edition :2-55~2-56
Arnold, J. G. / 1992 / Spatial Scale Variability in Model Development and Parameterization
Arnold, J. G. / 1998 / Large Area Hydrologic Modeling and Assessment: Part I: Model Development / Journal of American Water Resources Association 34(1):73~89
최대규 / 2009 / SWAT 모형을 이용한 영양물질 모의 및 유달율 추정에의 적용 / 한국물환경학회지 25(3):375~385
Donigian, A. S. / 2003 / Sediment Calibration Procedures and Guidelines for Watershed Modeling / WEFTMDL, WEF Specialty Conference Proceedings on CD-ROM (1):1~20
Arnold, J. G. / 1992 / Spatial Scale Variability in Model Development and Parameterization
Arnold, J. G. / 1998 / Large Area Hydrologic Modeling and Assessment: Part I: Model Development / Journal of American Water Resources Association 34(1):73~89
최대규 / 2009 / SWAT 모형을 이용한 영양물질 모의 및 유달율 추정에의 적용 / 한국물환경학회지 25(3):375~385
Donigian, A. S. / 2003 / Sediment Calibration Procedures and Guidelines for Watershed Modeling / WEFTMDL, WEF Specialty Conference Proceedings on CD-ROM (1):1~20
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