Alashan Plateau is located in the west of Helan Mountain, and the summer monsoon is difficult to reach. This is a dry non-monsoon area. In addition, there is a tall Qinghai-Tibet Plateau as a barrier in the south, which blocks the entry of humid temperature in the Indian Ocean. The dry and hot air in Alashan Plateau and its surrounding highlands flows southward, resulting in water shortage, strong sunshine, sudden change of hot and cold weather and dryness above 4.0. The vegetation on the surface is very sparse, and most of the ground is exposed. In addition, it is located in the high-altitude westerly circulation area, with windy weather in winter and spring, and wind erosion accumulation is very strong. The strong northwest wind often takes the elite soldiers on the plateau, leaving only a thin layer of coarse gravel on the ancient bedrock, forming the vast Gobi in the northwest of Alashan.
The surface of Alashan Gobi can be divided into rock desert and gravel desert according to composition. A very special large sauropod was officially named Chagan Nuoerlong by the author and Li Rong (the specimen is kept in Erenhot Dinosaur Museum in Inner Mongolia). This behemoth was taken from Ganor Formation, which means "white lake" in Mongolian, because the lake water is white because of its high salt content. This stratum is exposed 65km southeast of Erenhot and belongs to sandstone, mudstone and conglomerate deposited by rivers.