Figure 1

adapted from open access map GlobeLand30 http://www.globeland30.org/home_en.html, introduced by Chen et al87).
Map of the sites mentioned in this study and the modern landcover of Xinjiang (this map is edited by D.T. using ArcGIS 10.6 https://www.esri.com, the base map is from World Terrain Base in ArcGIS Online https://www.arcgis.com/home/item.html?id=d476e726bd8c4c3aa5168d735f647dcc, and the map of modern landcover is