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The main aim of this article is to analyze the import changes of Gwangyang Port using shift-share, location quotient and BCG matrix techniques. We perform the standard shift-share analysis and spatial shift-share analysis for the period 2010–2018 and investigate the import performance of Gwangyang Port for coal, iron ore, natural gas and vegetable matter. The static analysis shows that the regional shift effect, which is the most important component, is negative for coal and iron ore, but positive for natural gas and vegetable matter. The spatial shift-share analysis also indicates that Gwangyang Port experiences not only the gains in regional competitiveness but the industrial advantage for iron ore, natural gas and vegetable matter owing to its higher competitiveness. Incorporating location coefficients into BCG matrix for coal imports, we also show that Gwangyang Port succeeds upgrading its position for natural gas and vegetable matter, but fails escaping from transformation category or upgrading its position for coal and iron ore.
Mo et al. (Thu,) studied this question.