Studies on Integrated GIS and AHP for Marine Aquaculture Site Selection in Penghu Cove in Taiwan


In Taiwan, government policy has accelerated the transition from land-based to marine cage culture in recent years. As a result, choosing the right location is a crucial principle and determinant for future success in marine cage culture and sustainable development. It has a significant impact on economic viability by deciding capital expenditure and impacting operating expenses, production, and mortality. As a result, climate considerations, geographic environmental elements, bio-environmental factors, and social-economic aspects play a larger role in site selection. With the rapid growth of marine cage culture, there is a growing need for coastal zone environment analyses, which is a difficult task that requires one of the most useful tools for these types of analyses: the Geographic Information System (GIS). The criteria weight for site selection was evaluated using AHP (analytic hierarchy process) in this study. The weights of applicability of the four GIS grid themes were 0.322, 0.410, 0.127, and 0.141, respectively, according to AHP analysis. The findings reveal that geographic environmental elements are the most essential considerations when selecting acceptable marine culture sites in Taiwan’s Penghu bay. Meanwhile, a suitable map was created using ArcMap, a GIS software application, based on the specified grid themes. The GIS software and the AHP approach can be used to objectively choose the best sites for marine cage culture development based on the eligible sites discovered on the specific GIS grid themes.

Author (s) Details

Dr. Yi-Che Shih
Planning and Training Center of National Academy of Marine Research, Ocean Affairs Council, Taiwan and Department of Maritime Police University and Institute of Ocean Technology and Marine Affairs, National Cheng Kung University, Taiwan.

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