What are the poems about autumn leaves as follows:
1. The swaying Wu leaves send out the cold sound, and the autumn wind on the river stirs up the guest sentiment.
2. Before I realized the dream of spring grass in the pond, the phoenix leaves in front of the steps already sounded the sound of autumn.
Autumn introduction:
Autumn is one of the four seasons of "spring, summer, autumn and winter". Traditionally in China, the "beginning of autumn" of the 24 solar terms is the starting point of autumn. Entering autumn means that rainfall, humidity, etc. tend to decrease or decrease, and everything in nature begins to grow from lush growth to bleak and mature. Nowadays, the four seasons are often divided according to the average climatic temperature of modern scholar Zhang Baokun.
The indicator is that the period when the average temperature is lower than 10℃ is winter, the period when the average temperature is above 22℃ is summer, and the period between 10 and 22℃ is spring or autumn. Autumn is a season of alternating hot and cold weather.
Early autumn is still in the hot summer period and has not yet broken out. It is the hottest, humid and muggy time of the year. After late autumn, the sun is shining brightly during the day, the night is cool and dry, the temperature difference between morning and evening is large, the rain is reduced, and moisture is insufficient. Therefore, autumn dryness becomes the main feature of late autumn.
Overall characteristics:
my country traditionally takes the "Beginning of Autumn" of the 24 solar terms as the starting point of autumn. The word "autumn" is composed of the words "grain" and "fire", which means the grain is ripe. After entering autumn, in nature, everything begins to grow from luxuriant to mature. Its climate begins to transition from rainy and humid in summer to drier and drier in autumn.
The four seasons in my country are often divided according to temperature changes, using the "climate average temperature" classification by modern scholar Zhang Baokun. According to the zonal average temperature method, there are two main criteria for determining the beginning of autumn. The daily average temperature for five consecutive days is between 10℃ and 22℃, which can be regarded as the beginning of autumn and becomes a simplified standard.
The sliding average temperature for 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 get the 5-day sliding average temperature, which is a sliding scale. Autumn is classified according to the temperature method, which means it is cooler.
Phenology:
Autumn has entered since the beginning of autumn. Entering autumn means that precipitation, humidity, etc. are at a turning point in the year, tending to decline or decrease; in nature, everything begins to From lush growth to fruitfulness and maturity. Autumn is harvest season, and many plants mature in autumn.
In the autumn season, in nature, the yin and yang qi begin to change. The yang qi gradually recedes and the yin qi gradually grows. The climate turns from hot to cool. All things grow with the cold and gradually decline. This is the relationship between heat and coolness. Alternating seasons.