Why does the frog in Daming Lake don't call?
Shandong commercial newspaper reporter Zhang Shu
Shandong University Life Science College In the "Qi Yin and Daming Lake", written by Wang Xiangchun, the poet of the Qing Dynasty, Wang Xiangchun, a poet of the Qing Dynasty, said, "the lake is in the city, the space does not, the constant rain does not rise, the long drought does not dry up; as for the snakes, the frogs do not sing, then it is quite different." This is the mystery of Daming Lake, the four weird of Daming Lake. But just a few days ago, some citizens heard frogs in Daming Lake. Will the frog of Daming Lake be called? Why don't you call it? Why did anyone hear the cry? Let's listen to how experts solve these mysteries one by one.
classroom questions
Jinan people all know that Daming Lake has four "strange things": "a long drought does not dry up, the rain does not rise, the frog does not sing, the snake does not show". However, on the two days, Mr. Pan, a member of the public, saw a frog who could be called in Wang Lianchi inside Daming Lake. The frog who has never opened his voice for thousands of years has made an exception this spring.
Nie Jing, an expert in explaining
the first spring scenic spot in the sky, told reporters that the reason why Wang Lianchi could hear the frogs was because the water in the pool was drawn from the lake, but it was a stagnant water. "The water in Wang Lianchi is different from the water in Daming Lake, which is specially designed for planting lotus. The water in the pool is not like the lake itself circulating, but needs to be replaced manually. So it's not unusual for frogs to cry here. Similarly, there are also lotus pools near the pavilion near the moon, and some people have heard frogs there. The lake water, water temperature and water quality that have been introduced into the pond have changed somewhat compared with the lake in Daming Lake.
Nie Jing told reporters that so far, no one has ever heard of frog singing in Daming Lake. The legend about "frog does not ring" is related to Qianlong emperor. It is said that one summer, Qian Long visited Daming Lake. At noon, he stopped at Lixia Pavilion and saw the snake swimming and frog singing. Then the snake was ordered to return to the cave, and the frog was not allowed to cry. The emperor's golden mouth came out. From then on, the snake in Daming Lake disappeared and frogs did not cry. She said that as early as the Ming Dynasty Wanli period, Wang Xiangchun once recorded the "four strange" of Daming Lake, so this statement was only the writing of the Qing Dynasty people to please Qianlong.
many people ask questions in the classroom. During the rainy season in summer, the sound of the frog in the Xiaoqing River is shaking, but it is quiet in Daming Lake. Even if the frog that is crying is placed in Daming Lake, it will no longer be called. Is there a solution to the "ancient mystery" that does not sing in Daming Lake frog?
experts explain
He Tongli, a teacher of the College of life sciences of Shandong University, told reporters that there are many statements about the reason why "frogs do not sing". One of the comparisons is "water temperature". "Frog cry is a manifestation of courtship during estrus. Frogs will only cry when the water temperature exceeds 23 degrees Celsius. Because Daming Lake water is a gathering of springs, so the water temperature is relatively low. We have done experiments in black tiger spring, and the test confirmed that the water temperature of the spring is about 14 degrees. Therefore, the "frog does not" in Daming Lake is likely to be the cause of water temperature. However, he also stressed that this "frog does not sound", although there is a certain scientific basis, but strictly speaking, it is necessary to carry out a sample test to the final conclusion.
for other "three mysteries", he Tong Li also explained one by one. "Snakes are not present" because of the large number of waterfowl in Daming Lake, which makes the snakes difficult to survive, but the citizens have not seen no snakes in the Daming Lake, and the secret of the long drought is hidden in the bottom of the Daming Lake, because there is a igneous rock at the bottom of the lake. Let out. The long rain does not rise because the exports of Daming Lake are numerous. During the rainy season, the river rises, but it is dispersed and dispersed.
extension reading
the province also has lake and pool "frog does not call"
by collecting data, the reporter found that the so-called "frog does not sing" phenomenon is not unique to Daming Lake. In Hubei, Henan and other places, there are also strange phenomena that the frog does not call in the lake.
there is a strange lake called Xinye Lake in Henan province. Liu Xiu, the emperor of Han Guang Wu, is said to be the son-in-law of Xinye. According to the Dengzhou chronicles of Jiajing (Jiajing Xinye, Dengzhou District), "the Huzi lake is laid in the west of the bridge of Dengzhou. So far there are frogs in the pool. " Therefore, frogs do not cry in the lake.
and in the Yuquan temple in Dang Yang county of Hubei Province, the frog is not called. It is said that this is Song Zhenzong Zhao Heng's Ming Su queen Liu Shiceng to Yuquan temple. One morning, the queen got up and made up her makeup and listened to the pond outside the building. He said with a casual voice, "these animals do not call me for a while. Let me comb my hair at ease." But the frogs in the pond heard "not for a while", but until now, the frog in Yuquan temple did not call it.