1. Colorful leaves: Autumn is the season when leaves change color, and all kinds of leaves turn red, yellow and orange, forming a colorful picture. These leaves change color because the temperature gradually drops, chlorophyll gradually decomposes and other pigments begin to appear. Under the sunlight, these leaves become more colorful.
2. Fruit-laden Orchard: Autumn is the season of fruit ripening, and the orchard is full of fruit-laden scenes. Apples, pears, grapes and other fruits ripen in autumn. They are bright in color and sweet in taste. These fruits not only satisfy people's taste buds, but also add infinite vitality and vitality to the earth.
3. Harvest fields: Autumn is the harvest season, and the fields are full of harvest scenes. Rice, corn, sorghum and other crops mature in autumn, with golden color and a bumper harvest. Farmers are busy harvesting crops in the fields, and their faces are filled with the joy of harvest.
4, the climate is refreshing and pleasant: the autumn climate is refreshing and pleasant, the temperature is suitable, and the air humidity is moderate. This climate makes people feel comfortable and happy, and it also makes the earth more beautiful and livable.
Characteristics of autumn:
1, the temperature gradually drops: with the arrival of autumn, the temperature gradually drops. This is because the direct point of the sun gradually moves southward, the daytime time becomes shorter and the nighttime time becomes longer, which leads to the gradual decrease of the surface temperature. This temperature change will also affect everything in nature, such as discoloration of leaves and ripening of fruits.
2, the sky is high and the clouds are light, and the atmosphere is refreshing: the sky in autumn is usually higher and bluer than other seasons, with fewer and thinner clouds. This is because the moisture in the air decreases and the atmosphere becomes more transparent. This clear weather makes people feel comfortable and pleasant, and also makes the scenery more beautiful and livable.
3. Harvest season: Autumn is the mature season for many crops and fruits, such as rice, corn, sorghum, apples, pears and grapes. This is because in summer, under the conditions of abundant sunshine and suitable temperature, plants have carried out full photosynthesis and accumulated a lot of energy and nutrients. In autumn, these energy and nutrients are transformed into fruits and seeds, which provide a rich food source for humans and animals.