Research on Toughness Design Strategy of Wetland Park Based on the “Chain Theory” —— A case study of Wuhan East Lake Falling Wild Goose Scenic SpotMei Gan, Yongping Qian, Jingwen Liang and Lin LuE3S Web Conf., 293 (2021) 03020DOI: https://doi.org/10.1051/e3sconf/202129303020