What kind of season is autumn?

Autumn is the harvest season; Autumn is a crisp and fragrant season; Autumn is a happy season; Autumn is a busy season.

Autumn is one of the four seasons. Meteorologically, the autumn in the north temperate zone is from August 23rd (summer) to165438+1October 20th (light snow). Autumn in the south temperate zone is from February 19 (rain in the northern hemisphere) to May 2 1 (xiaoman in the northern hemisphere). The most obvious change in autumn is in the trees. The city began to clean up a lot of fallen leaves, and many tourists came to the mountains to watch the maple red.

Generally speaking, in autumn, the solar altitude angle decreases and the temperature decreases; The autumn wind is cool, the summer heat is gone, the fruits are covered with branches, and the fields are golden. Autumn is the harvest season, and many plants mature in autumn.

In the subtropical region of the northern hemisphere, the temperature in autumn is obviously lower than that in summer. As the temperature drops, the leaves of many deciduous perennial plants will gradually change color, wither and fall off, leaving only branches for winter. Panicum miliaceum will come to the end of his life, wither and die.

Autumn time in some cities of China (average temperature method);

Northeast China: Changchun August 20th, Shenyang September 5th, Dalian September 13.

North China: Beijing September 1 1, Jinan September 19, Qingdao September 2 1.

Central China: Zhengzhou1April September, Wuhan September 30, Changsha1March.

East China: Hangzhou 65438+10.4, Shanghai 65438+10.6, Ningbo 65438+10.7.

South China: Fuzhou 65438+1October 23rd, Guangzhou165438+1October, Shenzhen165438+1October.