What are the climatic characteristics of Sichuan?

The annual average temperature is obviously higher, the annual accumulated temperature is higher than that in the same latitude area, and the frost-free period is longer than that in the same latitude area. The air is humid, rainy and foggy, and the wind speed is low. Sichuan is located in the southwest of China and the upper reaches of the Yangtze River, and is called "the land of abundance". It is one of the birthplaces of Taoism in China, the birthplace of ancient Shu civilization, and the place where the earliest paper money "Jiaozi" appeared in the world.

The landforms in Sichuan province are quite different from east to west, and the topography is complex and diverse. It is located in the transition zone between the first Qinghai-Tibet Plateau in Chinese mainland and the middle and lower reaches of the third Yangtze River. The terrain is characterized by high in the west and low in the east, which consists of mountains, hills, plains, basins and plateaus.

Western Sichuan Plateau

The western Sichuan Plateau is a part of the southeastern margin of the Qinghai-Tibet Plateau and the Hengduan Mountains. The ground elevation is 4000-4500 meters, which is divided into two parts: the western Sichuan Plateau and the western Sichuan Mountain. The dividing line between the western Sichuan Plateau and the Chengdu Plain is the Qionglai Mountains in Ya 'an, and the western Sichuan Plateau is located to the west of the mountains. The topography of northwest Sichuan Plateau inclines from west to east and is divided into hilly plateau and plateau.

Hills and valleys alternate, the valleys are wide and round, sparsely arranged, and swamps are widely distributed. Shanxi in western Sichuan is high in the north and low in the southeast. According to the cutting depth, it can be divided into alpine plains and alpine canyons. The western Sichuan Plateau, where mountains and rivers compete for hegemony, rivers run, and the source and main tributaries of the Yangtze River have nurtured an ancient and mysterious civilization. Gongga Mountain, located in Ganzi Tibetan Autonomous Prefecture, is the highest geographical point in Sichuan Province, with an altitude of 7556 meters.