04884nas a2200493 a 4500 20260817172837.0 180809s2017 th uu m rtt 0| a1eng d .b12205254 AIT Thesis no.WM-17-15 Bhatta, Binod Climate and land use change impacts on streamflow and water quality in the Songkhram River Basin, Thailand Pathum Thani, Thailand : Asian Institute of Technology, 2017 1 online resource (115 leaves) : ill. (some col.) Thesis ; no. WM-17-15 A thesis submitted in partial fulfillment of the requirements for the degree of Master of Engineering in Water Engineering and Management Thesis (M. Eng.) - Asian Institute of Technology, 2017 This study examined the combined and separated impacts of climate and land use change on streamflow, sediment yield and nitrate-nitrogen in Songkhram river basin Thailand. The climate data predicted by ACCESS, CNRM and MPI for three future time periods (2010{u2013}2039, 2040{u2013}2069, 2070{u2013}2099) were prepared by using linear scaling bias correction method under RCP 4.5 and RCP 8.5. Three calibrated RCM showed that temperature is continuously increasing in the study area, however, future precipitation is highly complex and uncertain, there were significant differences among various RCM under RCP scenario. The future land use were simulated using the Conservation of Land Use and its Effects at small regional extent (Dyna-CLUE) model by establishing logistic regression model for seven land use types. The regression model Load Estimator (LOADEST) were applied to developed regression equations and to estimate nutrient and sediment loading at three site of Songkhram River basin from 1990 to 2014. Estimated loading shows increasing trend during past, however, suspended solid showed decreasing trend during historical period. Non-parametric Mann-Kendall test was used to check the significance of trend. Three scenarios (climate change only, land use change only and combined) were developed and the streamflow, sediment yield, and nitrate yield in future periods under these scenarios was simulated by using Soil and Water Assessment Tools (SWAT) model. Under climate change only annual and seasonal, streamflow, sediment yield, and nitrate yield is in decreasing rate with more in later period. Whereas land use change increase the flows and sediment yield during all periods and under both scenarios. But LULC change decreased nitrate yield. The results for combined scenario was similar to that of the climate change only scenario. In the future, climate changes tend to affect the hydrological regimes, sediment yield and nitrate yield much more prominently than the land use change, leading significant decreasing in streamflow, sediment yield and nitrate yield. Nevertheless, the role of land use change should not be overlooked, especially if the climate becomes drier in future, as in this case it may magnify the hydrological responses. Water quality Thailand Songkhram River Basin Climatic change Thailand Songkhram River Basin Shrestha, Sangam, Chairperson Babel, Mukand Singh, Examination Committee Duc Hoang Nguyen, Examination committee Bhattarai, Rabin, Examination Committee AIT Fellowship, Scholarship Donor WEM Project, Scholarship Donor Asian Institute of Technology. Thesis ; no. WM-17-15 Full-Text http://203.159.5.9/ait-thesis/detail.php?q=B04455 .b12205254 mnait m 240410 0 180809 m a m 0 000:001:PDF:b1220525:003798:0:0:0:0:0:0 Click to view Abstract n mnait mnait mnarc mnarc 20 40 61 Barcode : 30050120506679 CREATED : 2018-09-08 RECORD # : i13137542 LPATRON : 1030642 LCHKIN : 2020-11-11 # RENEWALS : 0 # OVERDUE : 0 IUSE3 : 2 TOT CHKOUT : 5 TOT RENEW : 9 Barcode : 30050120506646 CREATED : 2018-09-08 RECORD # : i13137554 LPATRON : 1030062 LCHKIN : 2022-08-23 # RENEWALS : 0 # OVERDUE : 0 IUSE3 : 3 TOT CHKOUT : 8 TOT RENEW : 27 Barcode : 30050120875595 CREATED : 2019-11-07 RECORD # : i13204233 LPATRON : 0 LCHKIN : - # RENEWALS : 0 # OVERDUE : 0 IUSE3 : 0 TOT CHKOUT : 0 TOT RENEW : 0 Barcode : - CREATED : 2019-11-07 RECORD # : i13204245 LPATRON : 0 LCHKIN : - # RENEWALS : 0 # OVERDUE : 0 IUSE3 : 0 TOT CHKOUT : 0 TOT RENEW : 0 17732 17732 0 0 0 0 MAIN MAIN mnait 2026-08-17 50.00 0 AIT Thesis no.WM-17-15 30050120506679 2026-08-17 17:28:37 1 2026-08-17 20 0 0 0 0 MAIN MAIN mnait 2026-08-17 50.00 0 AIT Thesis no.WM-17-15 30050120506646 2026-08-17 17:28:37 2 2026-08-17 20 0 0 0 0 MAIN MAIN mnarc 2026-08-17 0 AIT Thesis no.WM-17-15 30050120875595 2026-08-17 17:28:37 2026-08-17 40 0 0 0 0 MAIN MAIN mnarc 2026-08-17 0 AIT Thesis no.WM-17-15 2026-08-17 17:28:37 2026-08-17 61