Drone-Based Fluorescence Lidar Systems for Vegetation and Marine Environment Monitoring Zheng Duan, Ying Li, Xun Wang, Jinlei Wang, Mikkel Brydegaard, Guangyu Zhao and Sune Svanberg EPJ Web Conf., 237 (2020) 07013 Published online: 07 July 2020 DOI: 10.1051/epjconf/202023707013