The climate of Changchun is in the transition zone between the humid eastern mountainous area and the semi-arid western plain, which belongs to the temperate continental humid climate type and is more suitable. Although the east and south are not far from the ocean, the role of summer monsoon is weakened due to the blocking of Changbai Mountain. The west and north are flat Songliao Plain, and the Siberian polar continental air mass is unobstructed, so the climate is generally characterized by drought and windy in spring, short and warm in summer, obvious temperature difference in autumn and long and cold in winter.
The annual average temperature in Changchun is 4.6℃, and the highest temperature in history can reach 40℃. Since 195 1 has meteorological records, the lowest temperature is -36.5℃. The annual precipitation is 600 ~ 700 mm, the frost-free period is 140 ~ 150 days, and the freezing period is 5 months.
Natural resources in Changchun
Changchun has a vast territory and rich land resources. The main soil types are black soil, meadow soil and chernozem, accounting for 34.5%, 29.06% and 15.28% of the cultivated land area respectively. The soil is fertile. Generally, the black soil layer is 0.6 ~ 1.0m thick. There are 12 soil types, 38 subtypes, 64 soil genera and 190 soil types in Changchun, and their formation and distribution are obviously transitional.
Changchun is a dark brown soil belt in the east, a black soil belt in the middle and a chernozem belt in the west, changing from east to west. Affected by topographic differentiation, the soil series in this area are different. In the dark brown soil zone, there are dark brown soil in low hills, white slurry water in the platform, meadow soil in the valley and swamp soil in the depression. In the black soil area, the soil series of platform black soil, river terrace meadow soil and lowland swamp soil are formed; In the chernozem belt, a series of terraced plain chernozem, valley terraced meadow soil and saline-alkali soil were formed.
There are 58 kinds of mineral resources in Changchun, among which the main ones are oil, natural gas, carbon dioxide gas, oil shale, coal, limestone for cement, zeolite, bentonite, perlite, ceramsite shale, mineral water and gold mine.
Reference to the above content: Baidu Encyclopedia-Changchun