مقایسهٔ روش‌ها

	مدل SWAT	معادله جهانی از دست رفتن خاک
حوزه	ژئوفیزیک	ژئوفیزیک
خانواده	Process / pipeline	Process / pipeline
سال پیدایش	1998	1978
پدیدآور	Jeff Arnold and others at USDA-ARS	Waldo Wischmeier and Dwight Smith
نوع	Process-based watershed and water quality simulation	Empirical soil erosion prediction model
منبع بنیادین	Arnold, J. G., Srinivasan, R., Muttiah, R. S., & Williams, J. R. (1998). Large area hydrologic modeling and assessment part I: Model development. Journal of the American Water Resources Association, 34(1), 73-89.	Wischmeier, W. H., & Smith, D. D. (1978). Predicting rainfall erosion losses: A guide to conservation planning. USDA Agricultural Handbook 537.
نام‌های دیگر	SWAT	USLE, Revised USLE
مرتبط	3	3
خلاصه	The Soil and Water Assessment Tool (SWAT) is a process-based watershed model that simulates the hydrological cycle, sediment transport, nutrient cycling, pesticide fate, and land management impacts across a watershed or large basin. Developed by Jeff Arnold and colleagues at USDA-ARS in 1998, SWAT has become a standard tool for evaluating non-point source pollution, assessing climate change impacts on water resources, and designing best management practices.	The Universal Soil Loss Equation (USLE) is an empirical model that estimates annual soil loss due to sheet and rill erosion on hillslopes caused by rainfall and runoff. Developed by Wischmeier and Smith in 1978 from decades of erosion plot experiments, USLE has become a standard tool for erosion risk assessment, conservation planning, and best management practice design. The Revised USLE (RUSLE) updated the original model with improved factor algorithms.