What is the latitude of Dalat Banner?

Crescent Spring, known as Shajing in ancient times and Yaoquan in common name, has been one of the "Eight Scenes of Dunhuang" since the Han Dynasty, and is called "Yue Quan Che Xiao". The crescent spring is nearly 100 meters long from north to south and about 25 meters wide from east to west. The spring is deep in the east and shallow in the west, with the deepest point of about 5 meters. Bending like a crescent moon, hence the name. A clear spring bends, ripples linger, and it is as blue as jade. Spring is in quicksand, the drought is not over, and the wind blows sand, which is a spectacle. Scholars of all ages praised this unique mountain spring landform and desert wonders. The scenic spots are distributed in strips along Mingsha Mountain. There are many places of interest such as Mogao Grottoes, Leiyin Temple, Folk Museum, Baimata, Baiyun Temple, Yangguan, Wowachi, etc., with rich natural landscapes and distinctive Gobi desert features. The Mogao Grottoes, located in Dunhuang at the western end of Hexi Corridor in Gansu Province, collected 45,000 square meters of Buddhist murals and 2,000 colored sculptures, which were painted by China from the 4th century to14th century and 10 dynasty. Dunhuang is a famous town on the ancient Silk Road. In the long history of cultural exchanges between China and the West, it was once a gathering place for celebrities of Chinese and Western cultures. Because of their combination of essence and macro, they created the world-famous Dunhuang culture and left many cultural treasures for mankind. Not only is it a world-famous treasure house of cultural relics-Mogao Grottoes, but it also has a variety of natural features and cultural landscapes such as "lonely smoke in the desert, side walls, camel bells in ancient roads and oasis in clear springs". Among them, the crescent spring scenic spot in Mingsha Mountain is the best among many natural landscapes in Dunhuang. Throughout the ages, it has been known as "the wonders of the desert" and "one of the scenic spots beyond the Great Wall". Dunhuang, about 40 miles southeast, is a famous thousand Buddha cave at home and abroad. Walking from the Thousand-Buddha Cave to the northwest, walking for 20 miles in the Gobi, there is a continuous sand mountain, starting from the cliff top of the Mogao Grottoes in the east and reaching Danghekou in the west, stretching for 40 kilometers from east to west. The mountain peak is steep and powerful, which is very spectacular. This mountain sand is yellow, uneven and moving with the wind, such as ups and downs. In the dead of night, people are quiet, and suddenly I hear the sound of sand, such as a long whistle, which is sad and graceful. In the hot sun, even if the wind stops and the sand is quiet, the string sound of silk and bamboo will continue. History: In midsummer, it sounds like singing by yourself, practicing by people, and the sound shock is dozens of miles ... so it is called Mingsha Mountain. Surrounded by Mingsha Mountain, there is a bay of Yuquan, and the water surface is Wang Yang, crystal clear; Breeze and waves, the wave-free surface is flat; Stars, such as the moon, are brilliant; Suppress it, lurking in the awn; Along the coast of Xunyi, there are thousands of thoughts in the rivers and lakes. Whenever the morning comes, the first ray of sunshine in Xia Guang is exposed, with fog, watery moonlight, sparkling and beautiful scenery. Overlooking from the top of the mountain, the water looks like a hook moon, hence the name Crescent Spring. The spring water is tens of feet deep and does not dry up or overflow all the year round. When it freezes in winter, it produces iron-backed fish in the water, which is regarded as a god by local people and dare not eat it. Water plants grow in spring and are called seven-star grass. There are many reeds and waterfowl living by the spring, and there is a temple and several residents by the spring. During the reign of Emperor Wu of the Han Dynasty, it was said that a Tianma rose from this pool and went to Wan Li every day. Therefore, it is dedicated to the capital, and there are Tianma songs to remember it. There is a stone tablet beside the pool, which reads "Lying Cliff Pool", which is the name of the Han Dynasty. Crescent Moon Spring is famous throughout the ages. People who know Dunhuang must know that there is Mingsha Mountain; Anyone who knows Mingsha Mountain must know that there is a crescent spring. Crescent Spring is known as the eye of Mingsha Mountain and the lifeblood of Dunhuang. I think Crescent Moon Spring is famous because of the word "odd". The so-called "sparse" refers to the sudden emergence of a clear spring in the sand mountain desert sea, which can quench thirst, drink horses and stamp your feet, which is pleasing to the eye. The green grass beside the spring makes people suddenly enlightened, and there is a realm of "no doubt, there is no way to go, and there is another village". That thing which is rare is dear. If Crescent Moon Spring is located in the water town in the south of the Yangtze River, the mountain stream where Maolin grows bamboo is just an ordinary glimpse of Koizumi, a pool of spring water, and at most a landscape among green mountains and green hills. However, in the barren and desolate vast sand sea, it has different meanings to suddenly appear such a clear water surface and grow such a lush green life. Imagine how happy it would be for a thirsty traveler who has trudged in the desert for a few days to suddenly see such a world in front of him, just like a life struggling on the verge of death, and suddenly see hope. The so-called "wonder" refers to the crescent spring, which is no more than 100 acres in size and no more than 10 feet in depth. Surrounded by sand mountains, it has not been swallowed up and buried by quicksand for thousands of years. This is a miracle. Therefore, the name of Crescent Moon Spring is not the name of the spring, but its sand mountain has its own spring, and the spring persists in quicksand. This is the wonder of Crescent Moon Spring, which is today's famous "Crescent Moon Spring"! Hey, I wonder if others can see what I see? The artistic landscape of the nine-story Mogao Grottoes and the Mogao Grottoes east of Mingsha Mountain are the "three wonders" connected by the southern vein of Dunhuang. Become a tourist attraction that people in China and even the world yearn for. Mingsha Mountain is five kilometers south of the city, named after the sound of quicksand. Mountains are formed by the accumulation of quicksand, and the sand is divided into five colors: yellow, green, white and black. Shajiao Mountain, also known as Shensha Mountain, was called Mingsha Mountain in Han Dynasty and Mingsha Mountain in Jin Dynasty. Its mountains stretch for more than 40 kilometers from east to west and about 20 kilometers from north to south. The elevation of the main peak is1715m, and the sand ridges are adjacent. Sand falls with the feet. Over time, this kind of landscape is really rare in the world. Crescent spring surrounds Mingsha Mountain, which looks like a crescent moon, hence its name. In ancient times, it was called Shajing, also known as Yaoquan, which was misrepresented as Wowachi and renamed Crescent Spring in Qing Dynasty. Area 13.2 mu, with an average water depth of 4.2 meters. The water is sweet and clear, like a mirror. There are only tens of meters between quicksand and spring water. However, although this spring water is not covered by quicksand in the strong wind, it is located in the Gobi, and the spring water is not turbid and dry. This unique landform with the birth of sand springs and the preservation of spring sand is indeed a "wonder of the world". Mingsha Mountain and Crescent Spring are twin sisters in the desert Gobi. "The mountain is famous for its spirit, and the water is beautiful with spirit". Whether it's a bird's eye view from the top of the mountain or swimming by the spring, tourists will be fascinated. There is indeed a feeling of "singing sand mountains and washing the heart with crescent springs". In recent years, with the vigorous development of tourism, the local government has taken various construction and protection measures for the scenic spot, which has greatly changed its appearance. At the same time, desert entertainment projects such as sand therapy, sand skiing, gliding skydiving and camel riding were also carried out, which made tourists interested and endless. Crescent Spring, which looks like a crescent moon, is located about 5 kilometers south of Dunhuang City, Gansu Province. 1994, Mingsha Mountain (recorded as Shajiao Mountain in ancient books) and Crescent Spring were declared as national key scenic spots by the State Council. Most geologists believe that Crescent Moon Spring is a relic of Gudang River. Under the conditions of extreme drought and strong evaporation, it will not dry up for thousands of years because of the supply of underground undercurrent. In the past 30 years, the water environment has deteriorated sharply, which has raised new questions for people: what is the reason for the decline of the water level in Crescent Spring? From 1987 to 10 of 1997, the area of crescent spring decreased from 13.5 mu to 8.5 mu, with an average annual decrease of 0.5 mu. The maximum water depth dropped from 4.2 meters to 2.0 meters, with an average annual decrease of 0.22 meters. On April 9, 2006, the measured data showed that the maximum water depth of Crescent Spring was only1.0m. Ma Shengkai, director of Crescent Spring Management Office of Mingsha Mountain, told the reporter that at present, the water area of Crescent Spring is about 60,000 square meters, which was preserved by dredging twice 1.986 and 1.999. After five years of recharge, it attracts 500 Danghe River every year. Nevertheless, the water level of Crescent Moon Spring still drops by about 15cm every year. The investigation commissioned by Lanzhou Hydrogeological Engineering Center, the former Ministry of Geology and Mineral Resources of Dunhuang City, found that there were both natural factors and human factors, and the latter was the most important and direct reason. (Lu's photo report) The experience of Crescent Spring is the epitome of ecological deterioration in Dunhuang. Experts suggest that the protection of Crescent Moon Spring requires "major surgery": in the long run, strictly controlling the exploitation of groundwater, raising the groundwater level and maintaining the original dynamic balance of groundwater in Dunhuang Basin are the fundamental ways to control the decline of monthly spring water level, and also the inevitable choice to maintain the ecological balance of Dunhuang and ensure the sustainable development of social economy. At present, in order to protect the limited water resources, Dunhuang has completely banned land reclamation, resettlement and well drilling. In terms of inter-basin water transfer, the local government has declared the "Qinghai Water Diversion Project", striving to realize the quantitative discharge of water from the upper reaches of Shule River to Dunhuang every year. The Mogao grottoes, covered with thousands of vicissitudes of life, with the light of winning the ancient Buddha, silently watched the sun rise and the moon move in the dust of the desert. Dunhuang, which gave birth to the Mogao Grottoes, is an oasis city standing in the vast sand sea. It has witnessed the rise and fall of the Silk Road for thousands of years and the glorious history of human civilization. To the south of Dunhuang is Mingsha Mountain, such as Huanglong. On the cliff to the east of Mingsha Mountain, there is the Mogao Grottoes, and in its center, it is the sacred spring in the eyes of Dunhuang people-Crescent Spring. Crescent Moon Spring was born in the arms of Mingsha Mountain. In the past 265,438+000 years, the yellow sand has buried many of its former glories, but it has never invaded this clear spring. However, since the 1970s, the water level of Crescent Spring, which has been stable, has gradually declined. By the 1990s, the water surface of Crescent Spring had shrunk in a large area, and the bottom of the spring was clearly visible. People are worried about whether the life of Crescent Moon Spring has come to an end.