Chinese name: desert English name: sandy desert definition 1: the product of dry climate on the earth's surface, with average annual rainfall less than 250mm, sparse vegetation, less surface runoff and obvious wind, forming unique landforms, such as various sand dunes and wind erosion. Subject: geography (first-class subject); Definition 2 of desert science (two disciplines): areas covered by quicksand and sand dunes. Subject: soil science (first-class subject); Soil Erosion and Soil and Water Conservation (two disciplines) This content was approved and published by the National Committee for the Examination and Approval of Scientific and Technical Terminology.