Spatial pattern analysis of Haloxylon ammodendron using UAV imagery - A case study in the Gurbantunggut Desert. - Jia Xu; Haibin Gu; Qingmin Meng; Junhui Cheng; Yunhua Liu; Ping'an Jiang; Jiandong Sheng; Jiang Deng; Xue Bai (Int. J. Appl. Earth Obs. Geoinformation, 2019)