Sichuan can be divided into two major topographical parts, the Sichuan Basin and the Western Sichuan Plateau. 1) The Sichuan Basin, also called the Purple Basin or Red Basin, is one of the larger basins in China. Rising 1,000-3,000 meters above sea level, it is enclosed on four sides by the Daliang, Qionglai, Minshan, Daba and Wushan mountains and the Yunnan-Guizhou Plateau. It consists of three parts: the parallel valleylands in the east, the hilly areas in the middle and the Chengdu Plain in the west. Formed by alluvial deposits from the Minjiang and its tributaries, the Chengdu Plain is the largest in southwest China and the major farming area in Sichuan. With a warm climate, fertile soil and the Dujiangyan irrigation system, it is also one of the country's most affluent regions. The scenic, majestic Emei Mountain on its southwestern fringe is one of the best-known mountains in China. 2) The Western Sichuan Plateau, exceeding 3,000 meters in elevation in most parts, consists of numerous canyons ranged vertically side by side and rows upon rows of snow mountains. The northern section of it is part of the main body of the Qinghai-Tibet Plateau and the southern section is the northern stem of the Hengduan Mountains.
Sichuan has more than 1,300 rivers, practically all in the Yangtze River system. The Yangtze River has five major tributaries in Sichuan -- the Yalong, Minjiang, Tuojiang, Jialing and Qianjiang. Many of the rivers in Sichuan flow rapidly between hills, mountains and gorges, making it the number one province in hydroelectric power potentials.
(china.org.cn)
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