03704nas a2200433 a 4500 20260817162833.0 080919s2007 th uu|m rtt 0| a1eng d .b12039482 AIT Thesis no.WM-06-15 Sarayuth Punbune Application of AnnAGNPS in a selected sub basin in Ping Watershed for soil and water quality assessment Pathum Thani, Thailand : Asian Institute of Technology, 2007 88 leaves : ill. (some col.) Thesis ; no. WM-06-15 A thesis submitted in partial fulfillment of the requirements for the degree of Master of Engineering Thesis (M.Eng.) - Asian Institute of Technology, 2006 This study was conducted to evaluate soil and water quality in a particular sub basin of Ping River Basin. The selection of a pilot sub basin in Ping watershed was done based on a number of criteria such as scoring approaches. It was found that Mae Rim sub basin has the highest soil erosion score and this was the main basis for selecting the basin for this study. After selecting Mae Rim sub basin, data on watershed, land use, soil, climate, topography, and crop were collected from relevant sources. These data were used as inputs to run the AnnAGNPS (Annualized AGricultural Non point Source) model in order to simulate soil and water quality in the selected sub basin. In evaluating soil and water quality using AnnAGNPS (a continuous simulation and distributed pollution model), a number of procedures which include identification, extraction, and processing of critical area data using an AreView Geographic Information System (GIS) was used. The 2 years of synthetic climate data were used to generate event and source accounting predictions for a multi-use 522 square kilometer watershed in Mae Rim pilot sub basin. Results show very high erosion in high slope areas in northern part of Mae Rim. Water quality parameters such as Nitrogen, Phosphorus, and Organic Carbon, on the other hand, were found to have concentration within acceptable limits. These results reflect that the quality of water is not a major concern at the site, at this time. However, in this study area, a great number of observed data are required for calibration and validation before using the model as a tool for development planning and management. So if further testing can be undertaken, the approach adopted in this pilot sub basin can be applied to other watersheds in Thailand Ping River Watershed (Thailand) Soil erosion Thailand Water quality Thailand Watersheds Thailand Clemente, Roberto S., Chairperson Gupta, Ashim Das, Examination Committee Babel, Mukand Singh, Examination Committee Sutat Weesakul, Examination committee Ministry of Agriculture and Cooperative, Scholarship donor Asian Institute of Technology. Thesis ; no. WM-06-15 Full-Text http://203.159.5.9/ait-thesis/detail.php?q=B04281 .b12039482 mnait u 240401 0 080919 m a u 0 mnait mnarc 22 40 Barcode : 30050120550552 CREATED : 2014-03-31 RECORD # : i1278350x LPATRON : 1028029 LCHKIN : 2018-09-05 # RENEWALS : 0 # OVERDUE : 0 IUSE3 : 1 TOT CHKOUT : 3 TOT RENEW : 9 Barcode : 30050120233407 CREATED : 2016-01-04 RECORD # : i12921117 LPATRON : 0 LCHKIN : - # RENEWALS : 0 # OVERDUE : 0 IUSE3 : 0 TOT CHKOUT : 0 TOT RENEW : 0 6473 6473 0 0 0 0 MAIN MAIN mnait 2026-08-17 50.00 0 AIT Thesis no.WM-06-15 30050120550552 2026-08-17 16:28:33 3 2026-08-17 22 0 0 0 0 MAIN MAIN mnarc 2026-08-17 0 AIT Thesis no.WM-06-15 30050120233407 2026-08-17 16:28:33 2026-08-17 40