9Zhao Y, Yu Z, Chen F et al. Holocene vegetation and climate history at Hurleg Lake in the Qaidam Basin, Northwest China. Review of Palaeobotany and Palynology, 2007, 145(3):275-288.
10Zhao Y, Yu Z, Chen F. Spatial and temporal patterns of Holocene vegetation and climate changes in arid and semi-arid China. Quaternary International, 2009, 194(1):6-18.
