Autumn has come, what has happened to animals and plants?

In autumn, what changes have taken place in animals and plants, mainly reflected in the natural landscape and animals. The most obvious change in the natural landscape is in the trees. Many fallen leaves will be cleaned up in the city, and many tourists will flock to the mountains to see the red leaves. In autumn, animals with fresh air and hibernating habits begin to change their bodies, and mammals begin to store winter food.

Insects began to change to overwintering state, deciduous plants began to shed leaves, and the leaves of evergreen plants began to become thicker and smaller. Autumn, also known as autumn, is the third season of the year. The transition season from summer to winter is from September to 165438+ 10 in the northern hemisphere, from March to May in the southern hemisphere, and from the autumnal equinox to the winter solstice in astronomy.

Evergreen plants have not changed much. Some of the fallen leaves are yellow and some are red, and they begin to fall. Chrysanthemums and hyacinthus orientalis, which bloom in autumn, also begin to blossom. Some animals are preparing to store food for hibernation, while others are looking for food and mates.

Extended data:

Autumn, also known as autumn, is the third season of the year. The transition season from summer to winter is from September to 165438+ 10 in the northern hemisphere, from March to May in the southern hemisphere, and from the autumnal equinox to the winter solstice in astronomy. Meteorologists study phenology according to the following criteria: after the summer heat, the five-day average temperature is below 22 degrees for autumn, and it ends below 10 degrees.

The most obvious change in the natural landscape is in the trees. Many fallen leaves will be cleaned up in the city, and many tourists will flock to the mountains to see the red leaves.

There are six solar terms in autumn, namely beginning of autumn, Chushu, Bailu, Autumnal Equinox, Cold Dew and First Frost.

According to the standard of dividing seasons according to the average temperature, it must be that the average temperature for five days is below 22℃ to be considered as autumn. According to this standard, the Jianghuai area generally enters autumn in the middle and late September. After beginning of autumn, although the summer heat is hard to disappear for a while, there is still the afterglow of "autumn tiger", but the general trend is that the weather is getting colder and colder. The daily temperature range is gradually obvious, which is often very hot during the day and very cold at night.