GA-Based Research on Suitability of Recreational Space in Gardens to the Elderly—With Yangzhou Geyuan Garden as an Example

This study focuses on the relationship between the outdoor recreational space for the elderly and the landscaping design of gardens, and centers around gardens of the Southern Yangtze Delta where the elderly gathers spontaneously. With the Four-season Artificial Hills in Geyuan Garden, Yangzhou City, Jiangsu Province as an example, genetic algorithm (GA) is used to locate the optimal recreational point for the elderly, which situates close to “Yiyu Pavilion” according to the results. Analysis shows that this point is characterized by a large angle of perception, multiple layers of scenery and diversified attractions, which inspires the suitability design of today’s urban public spaces for the elderly and puts forward related suggestions on modification.