Concept
The Ordos Desert () is a desert/steppe region in Northwest China, administrated under the prefecture of Ordos City in the Inner Mongolian Autonomous Region (centered ca. ). It extends over an area of approximately , and comprises two sub-deserts: China's 7th-largest desert, the Kubuqi Desert, in the north; and China's 8th-largest desert, the Mu Us Desert, in the south. Wedged between the arable Hetao region to the north and the Loess Plateau to the south, the soil of the Ordos Desert is mostly a mixture of dry clay and sand, and as a result is poorly suited for agriculture. The Ordos Desert is almost completely encircled in the west, north and east by a great rectangular bend of the middle Yellow River known as the Ordos Loop. Mountain ranges separate the Ordos from the Gobi Desert north and east of the Yellow River. The northern border serves as the southern border of the Mu Us Desert. The mountain chains separating the Ordos from the central Gobi in the north of the great bend of the Yellow River are: the Kara-naryn-ula, the Sheitenula, and the Yin Mountains, which link on to the south end of the Greater Khingan Mountains. In the south and east, the Great Wall of China separates the Ordos from fertile loess lands. The Ordos covers the southern section of Inner Mongolia, an Autonomous Region of China; Ningxia, an Autonomous Entity of China; and the Chinese Provinces of Shaanxi and Gansu. The Ordos Desert forms an intermediate step in the descent from the Himalayas to the lowlands of eastern China. Towards the south it rises to an altitude of over 1,500 m, and in the west, along the right bank of the Yellow River, the Arbus or Arbiso Mountains, which overlie the steppe by some 900 m, serve to link the Helan Mountains with the Yin Mountains. The northern part of the great bend of the Yellow River is filled with the sands of Kuzupchi River, a succession of dunes, 12–15 m high. In some places these sand dunes approach close to the Yellow River; in others they are parted from it by a belt of sand, intermingled with clay, which terminates in a steep escarpment, 15 m and in some localities 30 m above the river.
