Ten thousand mu of desert shelter forest was destroyed. What will desert without shelter forest face?

Preventing sandstorm has always been an extremely sharp topic. The desert gives us the first impression of endless yellow sand and sea. Faced with the harsh environment of drought, lack of rain and water shortage, few lives can survive in this harsh environment. In addition, a very dangerous feature of many deserts is that they are very mobile. For example, the Kumtag Desert, located near Dunhuang, is the most mobile of the eight deserts in China, although it is not the largest in area. Spread to nearby cities with an area of about four meters per year.

First, the last line of defense in Dunhuang was destroyed. Yangguan Forest Farm, built in 1963, is located at the foot of Yangguan in Dunhuang. It has been a traffic artery since ancient times and an important gateway to the southern line of the ancient Silk Road. Because it is located between Kumtag Desert and Dunhuang City, the 20,000 mu sand barrier shelter forest here has become the last line of defense for the spread of Dunhuang Hell Desert. Due to the harsh climate in Kumtag desert, the annual precipitation is less than 40 mm, but the evaporation is nearly 100 times of the precipitation. Under the action of strong winds, the desert is approaching Dunhuang City at a speed of four meters per year, so these tens of thousands of mu of sand forest protection skills can lock the Yellow Salon and save the Dunhuang Oasis, which is very important and well described. However, after decades of logging, there is not much left in this green sand belt, and it has almost been shaved into a bald head.

Second, the impact of the loss of shelter forest Yangguan Forest Farm was once rated as a national demonstration forest farm for sand prevention and control by professional authorities. So far, the number of real natural deaths is very small, and the remains of trees suitable for planting in the desert, such as Populus euphratica and Salix Sinkiang, have been ravaged by knives, axes and saws everywhere. It is this crazy sand that can't eat the protective bag that the wind can't blow down, but now it has been cut down by human beings. This practice of exchanging long-term natural ecology for temporary economic development is tantamount to quenching thirst by drinking poison, and it also exposes the ignorance of ecological managers on the serious consequences brought by harsh environment and the weak concept of ecological civilization. We can no longer see the Great Green Wall to prevent sand, which makes the efforts of generations of sand control people go up in smoke, resulting in more and more serious land desertification. Without these plants as regulators, the climate will become drier and drier. At that time, the northwest end of Hexi Corridor will face the serious disaster of sandstorm eroding oasis.

Once Dunhuang loses the protection of Yangguan Forest Farm, the most direct consequence is that there is no barrier to stop the spread of desert. If you want to hold Dunhuang, you must hold Yangguan, otherwise the desert from the east will collapse and Dunhuang City will be submerged in the sand sooner or later.