Assessing climate change, land use change, and abstraction scenarios impacts on groundwater resources in Tak special economic zone, Thailand | |
| Author | Parichat Pinsri |
| Call Number | AIT Thesis no.WM-21-10 |
| Subject(s) | Climatic changes--Thailand--Tak Groundwater--Thailand--Tak Land use--Thailand--Tak |
| Note | A thesis submitted in partial fulfillment of the requirements for the degree of Master of Engineering in Water Engineering and Management |
| Publisher | Asian Institute of Technology |
| Abstract | Groundwater is an important source of water supply for Tak Special Economic Zone (SEZ) of Thailand. However, groundwater is under increasing stress from climate change, land use and land cover change and increase in abstraction affecting the groundwater level and its sustainability. Therefore, it is important to estimate these future stresses impact on the groundwater resources in the Tak Special Economic Zone. The future climate of the study area was projected using three GCMs data, namely CESM, MRI-ESM2-0 and CanESM under SSP2-4.5 and SSP5-8.5 for three future period: near future (2021 – 2050), mid future (2051 – 2080) and far future (2081 – 2100). Bias in the data were removed using linear downscaling method. The results show that both maximum and minimum temperature is increasing in all scenarios in future. A maximum increase in temperature is projected in far future with SSP5-8.5 scenario of up to 5°C increase. Annual rainfall also shows similar trend as the temperature, where it will increase in the NF, MF and FF with higher increase in SSP5 scenario. Land use and land cover change is predicted for two scenarios: business as usual and rapid urban expansion. Water demand is predicted to increase in all the scenarios in future for all sectors, domestic, agricultural, and industrial sectors. A SWAT model was used to project the recharge, where it will increase over time for all the scenarios. A groundwater model, MODFLOW was then used to project future groundwater resources. The results shown that there will be increase in groundwater level in the vertical midline of the study area and decrease in groundwater level along the boundary of the aquifer. The results do not vary much between future scenarios however notable difference are found compared to baseline period where more decrease and increase in water table will occur in the future. |
| Year | 2021 |
| Type | Thesis |
| School | School of Engineering and Technology (SET) |
| Department | Department of Civil and Infrastucture Engineering (DCIE) |
| Academic Program/FoS | Water Engineering and Management (WM) |
| Chairperson(s) | Shrestha, Sangam |
| Examination Committee(s) | Shanmugam, Mohana Sundaram;Virdis, Salvatore G. P.;Nguyen Thi Phuoc Lai |
| Scholarship Donor(s) | His Majesty the King's Scholarships (Thailand) |
| Degree | Thesis (M. Eng.) - Asian Institute of Technology, 2021 |