Lakes in the desert, which rely on humans to maintain water depths of 1.7 meters, have otherwise disappeared!

"On the far side of the mountain, there is a crescent moon spring......."
Deep in the desert of dunhuang, there is a singing sand mountain. Once upon a time, here businessmen exchanges, cultural exchanges frequent; Once upon a time, the mighty waves, magnificent; But time is relentless, and the crescent has faced the danger of running out of water many times in its history, but has survived. Now, after several large-scale projects, the average depth of the crescent spring stabilizes at 1.7 meters. Is it a mere name?

Yellow sand road, camel bell bursts, mogao grottoes and crescent moon spring is dunhuang impression to people. Countless cultural treasures persist in the desert. Compared with other desert landscape, crescent spring appears more comely. In a desert, can see a crescent moon, the feeling is really indescribable. Since the han dynasty, the moon spring is a tourist attraction. As a result, the south bank of the crescent moon spring retains a large number of historical buildings from the east to the west, famous temples and temples are ablaze with incense, and plaques and inscriptions leave the appreciation of scholars and scholars for it. And the legend of crescent moon spring is too numerous to enumerate, each paragraph is related to history, each paragraph has traces to follow.

There are four reasons for the formation of crescent moon spring, but they can be divided into two, one, natural causes; Second, human reasons.

natural causes

According to the existing data, there are three kinds of natural factors for the formation of crescent spring: ancient river residue, fault and wind erosion. All three theories are based on the aquifer, or undercurrent, beneath the surface of the lunar spring, which forms the basis of the spring. Natural factors, such as different geological processes, allow groundwater to seep out to form the lake.

artificial excavation

Among the remaining ancient books, the crescent moon spring is also called the manhole. Since it is called a well, it cannot be separated from human participation, so there is also a saying that manual excavation can be built into a crescent.

The closest historical record to us is the qing dynasty. Some documents record that in the qing dynasty, ships could sail on the crescent moon spring, but now they are quite fragile. This dramatic change took place around 1975, when human activities were so frequent that a large amount of groundwater was extracted, vegetation was destroyed and the groundwater level dropped sharply, and the crescent spring almost disappeared at that time. When the time came to around 1985, the average water level of the crescent spring was only about 0.8 meters, let alone sailing, even barefoot can wade through the water. In a period of time, flying sand not into the crescent spring let here more of a sense of mystery. In the middle of the desert, the wind and sand raging, there is still water, even become a small lake has existed for thousands of years, it is really very mysterious. If you think about it another way, you might come to a conclusion.

In ancient times, productivity was not developed and people relied more on nature. Man and nature are interdependent. During the industrial period, people's abilities were greatly enhanced, and they were not so in awe of nature. In order to achieve rapid development and value, they made unlimited demands. As a result, desertification became increasingly serious and nature became full of holes. Once fly sand not into the crescent moon spring situation can only exist in the history books. The data now shows that the mingsha mountain moved about 10 meters between 1995 and 2010, which is not a long distance, but means that the moon spring will disappear into the world sooner or later. In order to save the crescent spring, since 2010, the local government has taken a lot of measures to control the environment.

People like to travel, like curiosity, the moon spring in the desert is highly respected landscape, especially in the adjacent to the mogao grottoes, has become a fine line of travel, but in the tour, do you ever think that the moon spring has existed in name only? How do you think about this, welcome to follow the message!