03408nam a2200397 a 4500 20260818134409.0 .b1034844x AIT Thesis no. EV- 91-7 To Thi Thuy Hang Impact of salinity intrusion and discharge regime on rice cultivation in Ho Chi Minh City Bangkok : Asian Institute of Technology, 1991 124 p. Asian Institute of Technology. Thesis ; no. EV-91-7 A thesis s ubmitted in partial fulfillment of the requirement for the degree of Maste r of Science, School of Environment, Resources and Development Thesis (M.Sc.) - Asian Institute of Technology, 1991 Ho Chi Minh City is located in the downstream area of the Dongnai-Saigon River System. The river system is affected by the tide from the sea, and the lower parts are affected by salinity. Following the construction of Trian Hydropower Plant and Dautieng Irrigation Dam on Dongnai and Saigon Rivers, salinity conditions in Ho Chi Minh City have changed. It has been observed that there is a close relationship between the discharge from the reservoirs and the salinity in the downstream area. The construction of the dams has caused positive effects on the salinity in the fresh water regime area, and negative effects in the estuarine portion. Rice production in Thuduc has increased due to higher water discharged in the dry season, which resulted in a decrease of salinity. On the other hand, a decrease in rice production has occurred in Duyenhai District, because of higher salinity resulting from a reduction in water discharge from the reservoir in comparison with natural discharge in the rainy season. A software package, MIKE- 11, was applied to the area to study the salinity intrusion. The Hydrodynamic and Transport-Dispersion Models were calibrated and verified to get the best fit between computed and observed water levels and salinity. Then the models were applied to determine the relationship between discharge from the reservoirs and the salinity in the river system. This provides a basis for an economic analysis for optimization of discharge operations. Saltwater encroachment Vietnam Ho Chi Minh Schroder, Hans, Chairperson Mino, Takashi, Examination committee Zhuang, Ya-Hui, Examination committee Swedish International De velopment Authority (SIDA), Scholarship donor Full-Text http://203.159.5.9/ait-thesis/detail.php?q=B17395 .b1034844x mnait u 240402 2 951012 m a u 0 mnait mnait mnarc 20 40 Barcode : 30050003046009 CREATED : 1994-05-17 RECORD # : i10433430 LPATRON : 1025183 LCHKIN : 2014-08-23 # RENEWALS : 0 # OVERDUE : 0 IUSE3 : 0 TOT CHKOUT : 1 TOT RENEW : 0 Barcode : 30050003046017 CREATED : 1994-05-17 RECORD # : i10433442 LPATRON : 1016143 LCHKIN : 2003-08-29 # RENEWALS : 0 # OVERDUE : 0 IUSE3 : 0 TOT CHKOUT : 3 TOT RENEW : 0 Barcode : 30050120222699 CREATED : 2016-11-05 RECORD # : i12974353 LPATRON : 0 LCHKIN : - # RENEWALS : 0 # OVERDUE : 0 IUSE3 : 0 TOT CHKOUT : 0 TOT RENEW : 0 58168 58168 0 0 0 0 MAIN MAIN mnait 2026-08-18 0 AIT Thesis no. EV- 91-7 30050003046009 2026-08-18 13:44:09 1 2026-08-18 20 0 0 0 0 MAIN MAIN mnait 2026-08-18 0 AIT Thesis no. EV- 91-7 30050003046017 2026-08-18 13:44:09 2 2026-08-18 20 0 0 0 0 MAIN MAIN mnarc 2026-08-18 0 AIT Thesis no. EV- 91-7 30050120222699 2026-08-18 13:44:09 2026-08-18 40