Abstract
Thailand has set the 20-year National Strategy (2018–2037) towards sustainable development and building adaptability to climate change. The strategy promotes forestation and higher bioethanol energy demand. This study aims to investigate the effects of the climate and land-use changes on water balance in 2037, the end of the National Strategy, for the Mun River Basin, NE Thailand. The simulated climate dataset used in this study was ensemble means from IPCC AR5 Global Circulation Models for representative concentration pathway (RCP) 4.5 and 8.5 climate scenarios. The land-use change was simulated using the Dyna-CLUE (Conversion of Land Use and its Effects) model. The Soil and Water Assessment Tool (SWAT) was used to assess the water balance (considering evapotranspiration—ET, percolation—PERC, surface runoff—SURQ, and groundwater lateral flow—LATQ). The combined effects could increase monthly ET, whereas the climate change effect could outrun the land-use changes, resulting in increasing PERC. The sustainable development under the National Strategy (2018–2037) could be insignificantly affecting the water balance, whereas the “Bioethanol-Oriented” land-use scenario could increase SURQ and decline LATQ, which could intensify flooding. Soil-water conservation measures are recommended to mitigate the adverse effects of bioenergy.
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Datasets are available upon request.
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Acknowledgements
The author is thankful to SEACLID/CORDEX Southeast Asia Phase 2 project (Asst. Prof. Jerasorn Santisirisomboon), the Royal Irrigation Thailand (RID), the Electricity Generating Authority of Thailand (EGAT), the Department of Water Resources, the Land Development Department, and the Thai Meteorological Department for the data provided. The authors appreciate help from Prof. Peter Verburg for his valuable suggestions on CLUE simulation. The authors also appreciate the help from Dr. Adrian R. Plant, Mahasarakham University for language editing. A special thank is to the research assistant, Mr. Tanaporn Sripaisan, for the CLUE model simulation.
Funding
This research was financially supported by the National Research Council of Thailand, NRCT fiscal year 2018 to 2020, and co-funded by the National Natural Science Foundation of China under the Thailand–China Future Earth Project (41661144030).
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A. Bridhikitti: Conceptualization, Methodology, Data Curation, Writing, Supervision, Funding acquisition. A. Ketuthong: Software, Formal analysis, Investigation, Resources, Visualization. T. Prabamroong: Project administration. R. Li: Software, Investigation, Resource. J. Li: Software, Investigation, Resource. G. Liu: Supervision, Funding acquisition.
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Bridhikitti, A., Ketuthong, A., Prabamroong, T. et al. How Do Sustainable Development-Induced Land Use Change and Climate Change Affect Water Balance? A Case Study of the Mun River Basin, NE Thailand. Water Resour Manage 37, 2737–2756 (2023). https://doi.org/10.1007/s11269-022-03298-8
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DOI: https://doi.org/10.1007/s11269-022-03298-8