What are the climatic characteristics of autumn? What are the most suitable sports for autumn?

What are the characteristics of autumn? In autumn, the most obvious change of natural landscape is in trees. Urban society began to clean up a lot of fallen leaves, and many tourists went into the mountains to see the maple red. Autumn is a transitional season from summer to winter. The lunar calendar is from beginning of autumn to beginning of winter from July to September, the solar calendar is from 9: 00 to165438+1October, and the astronomical cycle is from the autumnal equinox to the winter solstice. The main meteorological disasters in autumn are: autumn rain in West China, cold dew wind in the south, frost and chilling injury at low temperature. 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, 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. The standard for meteorologists to study phenology is: after the intense summer heat, the average temperature for five days is stable below 22 degrees, which means that it is autumn, and it is over when it is below 10 degrees.

As can be seen from the date distribution map of beginning of autumn in China, Northeast China is the earliest place in beginning of autumn in eastern China. In autumn, the cold air in the north is constantly invading, but its power is not very strong. Autumn weather often forms in northern China, and continuous autumn rain often appears in West China. The temperature will gradually drop in autumn, but it is generally slower than in winter. Due to the difference of dry and wet conditions, there will be cold and rainy weather conditions or dry and cool weather conditions in different regions. In the cold late autumn, due to the large temperature difference between day and night, the water vapor transpiration during the day will condense at night, either dew or frost.

The focus of autumn diet is to chew slowly: eating too fast and not chewing enough food will lead to insufficient secretion of digestive juice and indigestion. Regular and quantitative: During the long vacation, people often have irregular work and rest, either omitting a certain meal, or concentrating on eating a certain meal, or even overeating, which will increase the burden on the stomach. Breakfast can't be saved: during the long vacation, you have enough time to sleep in, sometimes get up late, and even save breakfast.

But after I woke up, I was on an empty stomach for more than ten hours. If I don't eat, the gastric juice secreted at night lacks food neutralization, which can easily lead to gastrointestinal discomfort. Avoid eating before going to bed: Eating before going to bed will increase the burden on the stomach and may aggravate some symptoms. Try not to eat within 3 hours before going to bed. 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.