Abstract This study uses AHP-entropy weight methodology and a spatial econometric regression model to evaluate the ecological sustainability and its changes between the current situation and the planning scenario at the 2024 Chengdu International Horticultural Exposition in China. The results reveal that the low and highest sustainability levels decreased, while medium levels increased to 34.04 hm2. Converting village settlements, wastelands, and farmland into exhibition gardens and water bodies will increase medium-level ecological sustainability by improving rain and flood security and reducing flood disaster risk. Integrated Service areas will have more impervious surfaces as the site develops. Some forest destruction, decreased vegetation coverage, three-dimensional green volume, and vegetation carbon stock will result. It will lower the highest ecological sustainability. The regressive correlation between ecological sustainability level and quantitative indicators was relatively high, ranging from 0.5875 to 0.7148. It will provide policymakers with references and guidance for sustainable development mega-events.
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Huang et al. (2024) studied this question.
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