Chengdu has a subtropical monsoon climate, characterized by early spring, hot summer, cool autumn and warm winter. The monthly average temperature of 65438+ 10 is 6.2℃, the lowest temperature is-1.5℃, the July average temperature is 25.8℃, and the highest temperature is 36. 1. The annual precipitation is about1500mm.
It is best to visit Chengdu in spring and autumn, for example, to visit other scenic spots in Sichuan from Chengdu, which varies from place to place. It is suitable to visit Jiuzhaigou from late spring to autumn, and the best time is from September to 65438+ 10. The average temperature in summer is 19 ~ 22℃, and the weather in autumn is refreshing and pleasant. The temperature is mostly 7 ~ 18℃, but the temperature difference between day and night is large, so winter clothes such as sweaters should be worn. The vertical temperature difference in Emei scenic spot is large, and there is no big difference between low mountain area and plain. The temperature in Zhongshan area is 4 ~ 5℃ lower than that at the foot of the mountain, so tourists need to prepare enough clothes. The mountain area is about 10℃ lower than the mountain, but the tour organizers on the mountain have cotton-padded clothes; The best season to visit Siguniang Mountain in Ganzi area is May, 12, 1 and February. It rains a lot in June ~ 10 It's cold at night, so wear a thin sweater.
The geographical environment of Chengdu
Location context
Chengdu is located in the middle of Sichuan Province, in the west of Sichuan Basin, between east longitude10254 ′ ~10453 ′ and north latitude 3005 ′ ~ 3126 ′. The whole city is192km long from east to west and166km wide from north to south. Deyang in the northeast, Ziyang in the southeast, Meishan in the south, Ya 'an in the southwest and Aba in the northwest. It is 0/600km away from the East China Sea/KLOC-0 and 0/090km away from the South China Sea/KLOC-0, belonging to inland areas.
geology
Chengdu has a long geological history and its strata are fully exposed. The topography of the whole city is obviously different The northwest is high and the southeast is low. The western part belongs to the marginal area of Sichuan basin, mainly in deep mountains and hills. Most of them are between1000-3000m above sea level. The highest point is Shuanghe Township, Dayi County, with an altitude of 5353 meters and a relative height of about 1000 meters. The eastern part belongs to the basin-bottom plain of Sichuan Basin, which is the heart of Chengdu Plain. It is mainly composed of Quaternary impact plain, platform and some low hills. The soil layer is deep and fertile, with a long history of development, high reclamation index and flat terrain. The altitude is generally about 500 meters, and the lowest point is Yuntai Township, Jintang County, with an altitude of only 387 meters.
The height difference between east and west of Chengdu is 4966 meters. Because of the obvious difference in surface elevation, the spatial distribution of climatic factors such as water and heat is directly different. The temperature, water temperature and ground temperature in the western mountainous area are not only much lower than those in the eastern plain, but also there are obvious vertical climatic zones with different thermal differences between the upper and lower mountains, so the biological resources in Chengdu are various, complete in categories and relatively concentrated in distribution.
topography
Chengdu can be divided into plains, hills and mountains according to landform types; According to the soil type, it can be divided into paddy soil, fluvo-aquic soil, purple soil, yellow soil, yellow brown soil, etc. 1 1; According to the present situation of land use, it can be divided into eight categories: cultivated land, garden land and grassland. The plain area is 497 1.4 square kilometers, accounting for 40. 1% of the city's total land area, far higher than the national level of 12% and that of Sichuan Province of 2.54%. Hilly areas account for 27.6% and mountainous areas account for 32.3%. The land reclamation index is high, and the proportion of usable area can reach 94.2%. The average land reclamation index of the whole city is 38.22%, of which the plain area is as high as 60%, which is much higher than the national level of 10.4% and the level of1/0.5% in Sichuan Province.
Chengdu attractions
Chengdu ducao futang AAAA
Du Fu Caotang is located on the Huanhua River in the western suburb of Chengdu, Sichuan Province. This is the former residence of Du Fu, a great poet of the Tang Dynasty in China, when he lived in Chengdu. Du Fu lived here for nearly four years and wrote more than 240 poems. Wei Zhuang, a poet in the late Tang Dynasty, discovered the former site of the thatched cottage and rebuilt it to preserve it. It was repaired and expanded in the Song, Yuan, Ming and Qing Dynasties.
AAAAA Qingcheng Mountain
Qingcheng Mountain, a world cultural heritage, a national key cultural relic protection unit, a national key scenic spot, a national 5A-level tourist attraction, a global Taoist holy place, one of the four famous Taoist mountains in China, one of the Five Immortals Mountain, one of the cradles of Taoism in China and one of the top ten scenic spots in Chengdu.
AAAA Luodai Ancient Town
Luodai Town is located in the eastern suburb of Chengdu, north of Longquanyi District. Known as the first ancient town of Hakka in western China, it is also known as "the world Luodai, the eternal Hakka".
AAAA dayi liushi manor
Stone Manor is a national key cultural relic protection unit, one of the important historical sites and representative buildings in modern China, and a microcosm of semi-feudal and semi-colonial rural society in China. There are more than 20,000 cultural relics here, large-scale and well-preserved manor buildings, and a large number of objects and documents left by the manor, together with the unique manor display, constitute an organic whole.