a case study of Hoa Binh province Nguyen Anh Tuan creator Shrestha, Rajendra Prasad Chairperson Shrestha, Sangam Examination Committee Taravudh Tipdecho Examination committee Binh, Nguyen Duy Examination committee Ford Foundation Scholarship donor HUAF Scholarship donor HAU Scholarship donor Asian Institute of Technology Fellowship Scholarship donor text th Pathum Thani Asian Institute of Technology 2012 monographic eng 72 leaves : ill., maps, charts Soil erosion by water is serious global problem. This p roblem occurs in almost all of midland and mountain regions of Viet Nam. An insight into soil erosion, sedimentation mechanisms and mitigation methods plays an imperative role for the sustainable land resources development in the region. This study present s daily sediment yield simulation at a part of Black river basin in northwestern Vietnam to prediction annual soil loss for Hoa Binh province using the Soil and Water Assessment Tool (SWAT). The SWAT model was calibrated and validated in accordance with th e observed daily streamflow and sediment at selected gauging stations. The model efficiency (NSE) for streamflow and sediment in the calibration period were 0.96 and 0.61, respectively. In the validation period, the NSE value for streamflow and sediment we re 0.93 and 0.55, respectively. The results of NSE and the other criteria indicate of the model were acceptable. Another result, the amount of soil loss were estimated for the period from 2000 to 2010 at different land uses in Hoa Binh province, the amoun t of soil loss was largest at Disturbed Forest land use type. Total annual soil loss estimation at Disturbed Forest land use type from 2000 to 2010 varied from 21,587 tons ha - 1 to 66,479 tons ha - 1 per year. The smallest annual soil loss estimation at Rocks land use type, it was varied from 21 tons ha - 1 to 151 tons ha - 1 per year. These results reflected natural conditions in the region. In addition, the SWAT model was used to model soil erosion, identify soil erosion prone areas and predict erosion risk for Hoa Binh province in year 2010. However, a precise interpretation of the quantitative results may not be appropriate because some physical processes are not well represented in the SWAT model. A thesis submitted in partial fulfillme nt of the requirements for the de gree of M aster of Science in Natural Resource Management, School of Environment, Resources and Development Thesis (M. Sc.) - Asian Institute of Technology, 2012 Soil erosion Vietnam Hoa Binh Soil erosion Measurement Asian Institute of Technology. http://203.159.5.9/ait-thesis/detail.php?q=B03533 http://203.159.5.9/ait-thesis/detail.php?q=B03533 140622 20260818112645.0