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Chengdu is situated in the middle of Sichuan Province, on the West Sichuan Plain. Covering an area of 12390 sq km, it is 192km long from east to west and 166km wide from south to north. Up to the year 2000, the city zone of Chengdu was 208 sq km. Chengdu is adjacent to Deyang City in the northwest, Ziyang District in the southeast, Meishan District in the south, Ya'an District in southwest and Aba Tibetan and Qiang Autonomous Prefecture in the northwest. Chengdu belongs to an inland zone. It is 1,600 km away from the East China Sea and 1,090 km from the South China Sea. |
The geology of Chengdu has a long history and the stratigraphic exposure is relatively complete. The hypsography of Chengdu slants gradually from northwest to southeast. The western peripheral area of Sichuan Basin is characterized by hills and gullies and is 1,000 -3,000 above sea level. The highest part is Shuanghe (Twin Rivers) located in Dayi county with an altitude of 5,364 meters and a relative altitude of 1000 meters. At the bottom of the Sichuan basin is the eastern part of Chengdu, forming the heartland of the Chengdu plain. It is mainly composed of alluvial plains, mesas and in parts - low hills. The land in this area is very fertile. The lowest part of the basin is only 387 meters, which is located in Yutai, Jintang County. Due to the great difference of 4,977 meters in altitude between the east and the west of Chengdu, the moisture and heat distribution varies quite remarkably. As a result, in the mountainous areas of the western areas, the temperatures of air, water and land are much lower than that of the eastern plain. Moreover, even on the same mountain, the vertical distributions of different climatic zones occur. As a result, large varieties of vegetation grow in profusion, which provides favorable conditions for the development of agriculture and tourism for Chengdu.
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