Changes in animals, plants, and people s activities in autumn??

There are some significant changes in the behavior of animals, plants and people in autumn.

Variations of animals:

1.Migration: Many animals migrate in search of a more suitable environment. For example, birds such as geese and swans migrate from north to south to avoid cold winters.

2.Store energy: To prepare for the harsh winter months, many animals will increase their food during this season to store energy. For example, squirrels store large amounts of food, such as nuts and seeds, for winter consumption.

3.Hibernation: Some animals go into hibernation to reduce energy expenditure. For example, bears and bats hibernate until spring comes.

Plant Variations:

1.Leaf discoloration: One of the most striking features of autumn is the discoloration of leaves. This is because trees no longer need green leaves to absorb sunlight, so they begin to break down chlorophyll, giving the leaves yellow, orange, and red in color.

2.Leaf litter: When the leaves are finished decomposing, they fall from the tree, which is known as leaf litter. This provides an opportunity for the trees to rest and prepare for the winter season.

Changes in people's activities:

1.Harvesting: Autumn is the season when many crops are ripe, such as rice, corn, etc., and people will harvest them.

2.Festivals: There are many important festivals in autumn, such as the Mid-Autumn Festival and the National Day, which are celebrated.

3.Change of seasons: As the weather gets colder, people may change their clothes and household items to accommodate the arrival of winter. For example, people may wear thicker clothing and use devices such as heaters to keep the room warm.

These are some of the notable changes in the animals, plants, and people's activities in the fall.

When the autumn equinox comes, chrysanthemums are in full bloom, the month that belongs to their population, and on the Double Ninth Festival, they are the protagonists, and the golden flowers make people think of wealth; When the weather gets colder, the animals have to change into thick fur, and some animals are busy storing food for the winter; People are probably aware of this change, and their mood has become lighter.

The weather has changed from warm to hot, long sleeves have changed to short sleeves, animals have come out of hibernation and the plants have turned dark green

Summer is here, indicating that the rainy season is coming

The changes in autumn plants are:

Ginkgo tree: The ginkgo tree is a tree of the Ginkgo family, the genus Ginkgo, the leaf color changes in autumn, the leaves gradually turn yellow, and then gradually fall off.

Rowan: The leaves of the rowan are green in spring and summer, and turn bright red in the fall.

Creeper: The creeper's leaves are green in spring and summer, turning bright red in autumn.

Coptis chinensis: The leaves of Coptis chinensis turn orange-red in autumn.

Others: There are also maples, maples, black trees, wild sumacs, poplars, cogs, etc.

General characteristics. In China, the "beginning of autumn" of the 24 solar terms is traditionally used as the starting point of autumn. Entering autumn, it means that rainfall, humidity, etc. tend to drop or decrease. In nature, the yin and yang energy begins to change, the yang energy gradually retreats, the yin energy gradually grows, the climate changes from hot to cold, and everything grows with the cold and gradually declines.

According to modern meteorology, the autumn in the north temperate zone is on August 23 (summer heat) and November 22 (light snow); Autumn in the southern temperate zone falls on February 19 (Northern Hemisphere rain) and May 21 (Northern Hemisphere Lesser Man).

At present, the division of the four seasons in China is often divided according to the temperature change, and the division of "waiting for average temperature" by modern scholar Zhang Baokun is adopted. According to the average temperature method, there are two main criteria for judging the beginning of autumn.

First, the average daily temperature between 10 22 for five consecutive days can be regarded as autumn and become a "simple standard".

The second is: the sliding average temperature of 5 consecutive groups is lower than 22. A set of sliding average temperatures refers to the average temperature of the day plus the average temperature of the previous four days divided by 5 to obtain the 5-day sliding average temperature, which is the "sliding mark". Entering autumn means that the hot weather has passed and it is starting to cool down.

In nature, natural selection and survival of the fittest. Different plants and animals will change differently in different seasons. Let's talk about animals first, taking the animals in northern China as an example, in order to adapt to the cold of winter, different animals adopt different strategies.

Migratory birds take shelter from the cold by migrating.

Some animals that do not have long-distance migration, such as bears, bats, hedgehogs, frogs, snakes, etc., are in a state of extreme reduction in life activities in winter, which is a kind of adaptation of these animals to the cold of winter, which is the hibernation strategy. It can be seen that the climate has caused animals to evolve special instincts.

1. Hibernating animals, snakes, polar bears, etc., wake up from sleep, breathe fresh air, feel the long-lost sunshine, and begin to move around and forage for food.

2. Animals that do not hibernate, cats and dogs, enjoy the caress of the sun, smell the flowers and plants, and spread joy in the open space.

The most common animals are chameleons, snow hares, ptarmigans. Plants include mimosa, open night, and sunflower.

When the autumn equinox comes, chrysanthemums are in full bloom, the month that belongs to their population, and on the Double Ninth Festival, they are the protagonists, and the golden flowers make people think of wealth; When the weather gets colder, the animals have to change into thick fur, and some animals are busy storing food for the winter; People are probably aware of this change, and their mood has become lighter.

People wear more clothes at the time of the autumn equinox.

Autumn is coming, and what has happened to the animals, plants and people's lives.

Autumn has arrived, animals have begun to spend the winter, plants have begun to wither, and humans have begun to dress and keep warm. Autumn is the harvest season, and many plants mature in the fall. In the autumn season, in nature, the yin and yang energy begins to change, the yang energy gradually recedes, the yin energy gradually grows, the climate turns from hot to cold, and everything grows with the cold and gradually declines, which is the season of alternating heat and cold.

As the temperature gradually decreases, the leaves of many deciduous perennials will gradually change color, wither, and fall off, leaving only the branches to survive the winter. The annual herbaceous plants will come to the end of their lives, withering and dying. Seasonal transitions encompass many climatic characteristics, and it is inaccurate to judge autumn based on temperature alone.

The most noticeable change in autumn is when the leaves of the plants change from lush green to yellow, and begin to fall and the crops begin to ripen.