TY  - SER
AU  - Thin Su Lwin  
AU  - Sutat Weesakul,
AU  - Babel,Mukand Singh
AU  - Shrestha,Sangam
AU  - Sarawut Ninsawat
AU  - Somchai Chonwattana,
ED  - AIT Fellowship ,
TI  - Impacts of land use/land cover change on streamflows: a case study of the Myitnge sub-basin in the upper Ayeyarwady River Basin, Myanmar
T2  - Thesis; 
PY  - 2020///
CY  - Pathum Thani, Thailand
PB  - Asian Institute of Technology
KW  - Streamflow
KW  - Myanmar
KW  - Ayeyarwady River Basin
KW  - Land use
KW  - Case studies
N1  - 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, 2020
N2  - This study aims at evaluating land use changes in the Upper Ayeyarwady River Basin of  Myanmar and investigating historical and future land use change impacts on streamflow  for the selected Myitnge sub-basin.  In this study, land use maps in the Upper Ayeyarwady River Basin for 24 years from  1992 to 2015 were compared and analyzed. In this basin, shrubland and grassland  decreased from 28,891km2 to 18,429km2 which indicates 5.3% reduction and loss of  these areas were shifted to croplands. For selected Myitnge sub-basin, forest and  shrublands occupies totally 28.24% and 24.59% in 1992 and 2015, showing 3.65%  reduction,barren and others was 2.31 % reduction while croplands have resulting in 5.7%  increasement during the period. Land use change impacts on streamflow in the historical  time periods for the Myitnge sub-basin were investigated using rainfall-runoff model  (HEC-HMS).  It was found that the past land use change in the Myitnge sub -basin result in increase of  Curve Number of the hydrologic model. Consequently, averaged flow and peak flow  were found to be increased due to the land use change. Dyna-CLUE model was employed  to project the future land use in the Myitnge sub-basin up to 2050. HEC-HMS model was  calibrated comparing observed and simulated land use map in 2015. For Dyna-CLUE  Validation, Myitnge Sub-basin obtained overall accuracy 90% with Kappa index value  "0.84". Three different scenarios were established to determine land use change impact  on streamflow, namely "Trend Scenario", "Forest Conservation Scenario" and  "Agricultural development scenario". CN values were obtained using historical four land  use maps and projected until 2050 for three different scenarios and annual rainfall events  between 1992 to 2015, apply to HEC-HMS modeling. Trend Scenario was found to  produce higher flow for defined rainfall events compared with the current land use  whereas Forest Conservation Scenario produces lower flow, which is better in the  viewpoint of flood control than other scenarios.
ER  -