What is the climate type in Sichuan?

Sichuan has a subtropical monsoon climate and a plateau and mountainous climate.

The eastern part of Sichuan Province, namely the Sichuan Basin and its surrounding mountainous areas, belongs to the humid climate zone in the middle subtropical zone and has maritime climate characteristics. This area is warm and humid all year round. The annual average temperature 16 ~ 18℃, the daily ≥ 10℃ lasts for 240 ~ 280 days, the accumulated temperature reaches 4000 ~ 6000℃, the daily temperature difference is small, the annual temperature difference is large, it is warm in winter and hot in summer, and the frost-free period is 230 ~ 340 days. There are more clouds and less sunny days in the basin. The sunshine time in 20 13 years is short, only 1000 ~ 1400 hours, which is 600 ~ 800 hours less than that in the lower reaches of the Yangtze River basin at the same latitude.

Subtropical and semi-humid climate zone in southern Sichuan. In 20 13, the temperature in this area is relatively high, and the annual average temperature is 12 ~ 20℃. Annual range is small and the diurnal range is large. It is cold in the morning and warm in the afternoon. The four seasons are not obvious, and the dry and wet seasons are distinct. There is little precipitation. There are seven dry months in 20 13, with annual precipitation of 900 ~ 1200mm, and 90% of them are concentrated in May ~ 10. There are few clouds, many sunny days and long sunshine hours, and the sunshine hours in the whole year are mostly 2000 ~ 2600 hours. Typical dry-hot valley climate is formed in the valley area affected by foehn, and obvious three-dimensional climate is formed in the mountain area.

The alpine climate zone in the alpine plateau of northwest Sichuan. The altitude difference in this area is great, and the three-dimensional climate change is obvious. Subtropical zone, warm temperate zone, middle temperate zone, cold temperate zone, sub-cold zone and permafrost zone appear in turn from the valley to the ridge. Generally speaking, the climate is dominated by cold temperate zone, with dry and warm valleys, wet and cold mountains, cool Leng Xia in winter and insufficient water and heat. The annual average temperature is 4 ~ 12℃, the annual precipitation is 500 ~ 900 mm, the weather is clear and the annual sunshine 1600 ~ 2600 hours.

the terrain of si chuan

Sichuan Province is located in the first and second steps of Chinese mainland's topography, that is, the transition zone between the first Qinghai-Tibet Plateau and the third Yangtze River Plain, with great disparity in height, especially the characteristics of high in the west and low in the east. The west is a plateau mountain with an altitude of more than 3000 meters; There are basins and hills in the east, which are mostly between 500 and 2000 meters above sea level. The whole province can be divided into five parts: Sichuan Basin, Western Sichuan Alpine Plateau, Northwest Sichuan Hilly Plateau, Southern Sichuan Mountain and Micang Mountain Daba Mountain.

Sichuan has a complex terrain, mainly mountainous areas. There are four types of landforms: mountains, hills, plains and plateaus, accounting for 74.2%, 10.3%, 8.2% and 7.3% of the total area of the province respectively. * * * There are 25 soil types, 63 subclasses, 137 soil genera and 380 soil types, accounting for 43.48% and 32.60% of the national total respectively.

The above contents refer to Baidu Encyclopedia-Sichuan Province.