A Preliminary Study on The Prevention and Control of Seawater Intrusion in Northern Pingtan Island with Freshwater Recharge CurtainMengyao Diao, Panlin Li, Weifang Ruan and Wanglin LiE3S Web Conf., 199 (2020) 00012DOI: https://doi.org/10.1051/e3sconf/202019900012