Recently, the Chinese Academy of Sciences Roboy Environmental Drilling Scientific Examination Team conducted a comprehensive systematic environmental science in Robue. The inspection team believes that according to the initial inferior, with the fast-scale rise of the Qinghai-Tibet Plate, Robé migrates from the south to north, and the drying is gradually intensified. Finally, the entire lake is dry.
Such an explanation is clearly not satisfactory. Zhou Kun, uncle, the Institute of Geology and Earth Physics, Chinese Academy of Sciences, believes that the reasons for the dryness of Robs is complicated. This is both a global issue and a regional problem. In addition to natural reasons, there are people-oriented factors -
Global climate drought is a big background
About 10 years ago, the global environment had an unprecedented change, which evolved into a wet environment in the post-Ice period, and the human culture was also entered the new stone era by the old stone era. After 10,000 years, the geological environment has undergone three major phases of changes, and the temperature is about 10,000 to 8000, which is a high temperature period from 8,000 to 3,000 (climate appropriate), and 3000 It is time to cool down. These three major environmental patterns have changed to the ancient Environmental Institute of Geology, Biology, Chemistry and Physics. It is only a slight access to the three-stage division, due to the different methods, locations or research objects. This change in environmental climate plannings the scope and way of human activities.
Take Loulan as an example, the humanity of the Neolithic Age is involved here. The population here is prosperous here. At this time, the time is high, and the Lake Robé is broad, the environment is appropriate. However, after it enters the cooling zone, the soil environment is deteriorated, the river is reduced, the lake is reduced, and the desert is expanded. In the distance of about 2000, the drought is exacerbated, which is in the northern region of China, and the loess is accumulated, the lake is derived, and the sea is increasing.
The demise of the ancient city of Loulan is approximately to the fourth century BC (the Han Dynasty to the Northern Wei Dynasty), which is a period of drought intensification. In fact, during this drought process, it is not only the land of the ancient city, but also due to the expansion of the desert, it has happened to Naiya, Keraun, Milan City, Niyu City, Khan City, and the Universal City and other demise.
The demise of the ancient city of Loulan is in the northern China, even the big context of the world's climate, it is not an isolated space, but because the landlord is in the arid landlocked, the changes in humanities and the natural environment are more remarkable.
Qinghai-Tibet Plateau ridge is a regional factor
In addition to the changes in global climate, the ridges of the Qinghai-Tibet Plateau are the most important reasons in geographically. In the distance of 7 to 80,000 years ago, the Qinghai-Tibet Plateau quickly rose. This ridge has a decisive role in the climate in the northwestern China. Due to the geographical location of Roboy is located in the northwestern inland, the warm and humidity of the Pacific and the Indian Ocean are almost rarely reached here.
When the global climate change, the entire East Asia is beginning to have drought and desertification and Gobi Trends. During this time, Roboy began to go from south to north. At about 70,000 years ago, the lake fell sharply to the end of the lake. Due to the high and low of the lake, the original huge unified ancient Robell is broken down into the current Taima Lake, Kera and Shunhu and the larger Roboy in the north.
In the geographical factors, there is still a point where it is said that from the recent remote sensing information, the upstream of the Peacock River has undergone a large landslide event. This landslide entirely blocked the river channel of the Peacock River, causing the tone of Robé to be broken. The problem now is not to know the specific time of this landslide, and it has happened before Roboy dry.
Human excessive development accelerates Robue dying
The influence of human activities on the dryness of Robell, can be more and more in the near future. Water and trees are the key to the wilderness of Oasis. The ancient city of Loulan is built downstream Delta in the well-developed Peacock River in the water system, where there is a long-lasting poplar tree for its construction. In the year, the landlocks built more than 1 million square meters of Loulan ancient city, and they cut down many trees and reeds, which would undoubtedly produce negative effects on the environment.
During this period, human activities exacerbate and the changes in the water system and the damage of the war have further deteriorated the vulnerable ecological environment. According to the "male root stump" of the small river cemetery on the small river, the Landsman has already felt that the tribal survival crisis has only prayed that reproductive worship will bless their children and grandchildren. But they cut down the rare trees and put on the environment that has worsened the environment. The ultimate development of Robé is related to our liberation. In the last year, we went a lot of water in the Tarim River, causing water in the Tarim River, downstream. This can be confirmed from the Yellow River in recent years. Robs also began to shrink quickly because they did not come to water, and finally died.
The ancient city of Loulan disappeared became "the regret of the world"
Lift Loun Ancient City, people will think of Swedish explorers, Hous, because he announced the existence of the ancient city of the landlord in 1901.
On March 28, 1900, Swedish Explorers, Swing, Jun, is investigating in the Rob Desert. He hired, and the Uighur farmers Aldick was accidentally found on the way to Lotebur, due to loss of tools. After the ancient sites, Schv He Kiki heard, immediately came to the relics with Alidick, discovered that this ancient russ is spread, spread beautiful wood carvings, fabric, coins.
Sens Hechi had returned due to lack of drinking water. After a year, on March 3, 1901, Ssqui Kedi came to this rule and conducted a weekly discovery. After sorting and analysis, He Dach is based on the outstanding books, and the remains are set to Loulan. This important discovery shocked the world, andvested great honors for Ssqui.
Subsequently, the British Shannian, Japanese Orange Ruichao, etc., all along the road map of Hekno, and their excavation work is more complete and meticulous, but it is also destroyed and predatory. These work became an important geographical basis for future landlock exploration.
Although it is difficult to identify the face of Lancheng in the Gobi and Yadan landform, scientists found in a large number of data and inspections, as the heavy town on the Silk Road, the 1500 years of Loulan City once brilliant.
According to expert analysis, the land of the landland has been 1800 years. After experiencing the wind and wash robbery, only the disabled Poplar frame and a small number of reed walls. From the size of the house and the building materials, the housing conditions of ordinary people were relatively simple, but a large number of fine wooden products and ancient coins left in the remains in the remains reminded people that there were also people in the richest side of the city. Experts believe that there have been rich and poor in the city of Loulan, and these wooden products also show us a prosperous craftsmanship and the prosperity of the landlorelan economy.
Experts find that there are dozens of houses, and it is concentrated in the residential area in the west, and there are also administrative and military districts in Chengdong, and the city is complete, and the urban planning and development awareness. Obviously.
Experts pointed out that as the intersection of the two Silk Roads in the north and south, Loulan City fully absorbs the potential of transportation and commercial resources from the parties in the east and west, plus the neighboring Peacock River, the river is full of water, the landlore city has been brilliant on the Silk Road A time.
