Why a kingdom disappear overnight? Loulan to what extent the development of civilization and how? Frequency is a mystery why the Lop Nur area? Today, this shocked the world heritage brought to people is still a mystery. Yesterday, the Institute of Ecology and Geography Research Fellow, Chief Scientist Summer Training Prudential, took in Chengdu library "Sands forum" for the people of Chengdu opened a mystery of ancient Loulan.
Loulan city farming remains a large area of the East
Thirty-six Loulan is one of the Western Regions, and the adjacent Dunhuang, located in the eastern Tarim Basin, Xinjiang Lop Nur now and its adjacent areas, is closely related with the Han and Tang Dynasty culture. The heyday of a flourishing population, traveling noise, but in the 4th century AD, Loulan Cultural halted. Lop Nur, a century-long enthusiasm for exploration, a large number of precious relics go abroad. Until the 80s of last century, "Lop Nor in China, and study abroad," the fact that this remains the same frustration. After six months of preparation, in May 1980, Chinese scientists led by Peng wood expedition team of 11 people marched to the Lop Nur, vice captain for the summer Xuncheng was invited to visit the United States, but missed the action.
Unexpectedly, Peng wood in the expedition expedition unfortunately missing. Peng wood in order to inherit the behest of, in the next 20 years, Prudential has 29 summer-depth training, "the desert of death", issued in the Lop Nur area of research and the voice of the Chinese people. To commemorate the 30th anniversary of the missing wood Peng, Xia Xuncheng October 16 this year, the 30th into the Lop Nur region, the study until the end of November 15. "This time we travel 6500 kilometers, has made many important discoveries, including the ancient city of Loulan the East found a large area of agricultural heritage, it can be found here have planted food." Xia Xuncheng said that in the archaeological context, in the river cemetery northwest, expedition team discovered a new site of the ancient city wall, built about AD 400-500 years, the formation of the Northern Wei Dynasty.
Lop Nur area like a big ear
"Drying up the shape of the Lop Nur region, satellite photos look like a big ear." Xia Xuncheng said, through several visits and found that, earrings are in the lake formed during the retreat, is that every year, every quarter, every month every day during the stay in the dry lake to the scene. When did this big ears formed? "Specific time early in the 20th century, 60 4-5 years time." Xia Xuncheng said that now the "big ears" of the study is continuing in depth. The Central Weather Bureau, Institute of Desert Meteorology, Urumqi, to Lop Nur in the town of Hamilton, the installation of three automatic weather stations and found that less than 10 mm annual precipitation of Lop Nur, steamed
Development capacity is over 4800 mm or more, several instruments have been measured relative humidity of zero records. Therefore, the Lop Nur region is the center of the Asian inland regional drought.
"On the demise of the ancient city of Loulan, one of the Silk Road was to go by sea, not by land, and way off the city space is a saying." Cheng said the summer training, the second reason is that the water off the city air, water go, where to into an oasis where the water left, where is the desert. Lake because it is the Tarim River, tributary of the great change, water breaks, the city's people ran away. Lop Nur lake profile from the magnetic susceptibility, grain size and trace elements and micro-analysis of body fossils, nearly a thousand years can be divided into environmental change Lop 8 stage. Among them, in 3400-2200, the evolution of the Lop Nur, a major dry event, the lake was all dried up things, the formation of the river between the cemetery and the ancient city of Loulan the absence of human activity. Source: Huaxi Dushi Bao
