Is there enough light in Songnen Plain?

The lower reaches of the second Songhua River in Songnen Plain is a famous "hometown of black land" in China, which governs three prefecture-level cities, namely Changchun, Jilin and Songyuan, and nine cities and counties, namely Nong 'an, Jiutai, Dehui, Yushu, Lan Shu, Fuyu, Guo Qian, Gan 'an and Yongji. It covers an area of about 46,000 square kilometers, with a population of 6.5438+0.236 million and a population density of 2.68.7 people/square kilometer. The annual precipitation is 580mm; 9.6 billion cubic meters of water resources; The annual sunshine time is 2700 hours, and the annual average temperature is 2-6℃; The forest coverage rate is about 42%. The regional air quality meets the national secondary standard.

Changchun has a pleasant climate with four distinct seasons: spring is short, dry and windy; Summer is warm and rainy, and there is not much hot weather; Autumn is crisp and the temperature difference between day and night is large; Winter is long and cold. Jilin City, the only city in China with the same name as the province, is famous for its beautiful scenery, rime fairyland and ski paradise, and is known as "Guilin in the south and Jilin in the north". Songyuan, known as "granary, meat warehouse, fishing village and oil sea", is a new petrochemical city established in 1992, where Jilin Oilfield is located.