Spatial Changes Along the Mekong River Chiang Rai by Object-Oriented Classification
DOI:
https://doi.org/10.14456/jiskku.2024.18Keywords:
Spatial Changing, Land Use Change, Satellite Images, Object-Based ClassificationAbstract
Purpose: This study aimed to analyze the spatial changes of the Mekong River and the land use along the Mekong River in Chiang Rai province.
Methods: Spatial changes from medium to high-resolution satellite images were analyzed using object-based classification, followed by accuracy verification through field surveys. Land use characteristics were provided by the Department of Land Development and Google Earth, using open-system geographic information programs (SAGA GIS and Q-GIS) free of charge. The proportions of spatial changes were then compared for the years 1996, 2001, 2007, 2011, and 2019.
Findings: A study of spatial changes along the Mekong River found that the changes are related to the economic development policies of the region and the national economy. It was also found that using very high-resolution satellite images in object-based classification improves accuracy and consistency with the real area. The accuracy rates for the years 1996, 2001, 2007, 2011, and 2019 were 88%, 97.14%, 96.29%, 96.29%, and 98.29%.
Application of this study: The study of spatial changes in the Mekong River area since the development of the first electric power dam provides results and maps that can be communicated to the public sector to increase awareness of the overall picture. These changes can be used for planning land use. For the academic, public, and private sectors, the study results can inform area development planning to suit the context of the administrative area they manage in the future.
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References
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