Abstract
Over the last 2000 years, approximately 38 ancient cities were abandoned through desertification in Hexi Corridor, Northwest China. Among them, 21.05% were abandoned during the Northern and Southern Dynasties, 21.05% during the end of the Tang Dynasty and the Five Dynasties, and 57.9% during the Ming and Qing dynasties. At the same time, main lakes were shrinking rapidly from the 5th Century to the 6th Century and the end of the Qing Dynasty. The climate in these periods was relatively arid and cold with frequent dusts. The phase of these changes indicated that there were three periods of desertification enlargement in the northern China. They were Northern and Southern Dynasties, the end of Tang Dynasty and Five Dynasties, the Ming and Qing dynasties. The macro-process of desertification in the study area was controlled mainly by the climatic changes. But from the facts that the population density in the middle of Qing Dynasty had exceeded the critical index of population pressure in arid area and the usage rate of water resources had exceeded 40% in Hexi Corridor, this paper also suggests that human activities have played an important role in desertification processes of the study area mainly during the recent 300 years.
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Foundation item: Under the auspices of the National Natural Science Foundation of China (No. 40471138) and the National Key Basic Research Project (No. G2000048701)
Biography: WANG Nai-ang (1962-), male, a native of Yucheng of Shandong Province, professor, specialized in environmental changes and historical geography. E-mail: wangna@lzu.edu.cn
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Wang, Na., Zhang, Ch., Li, G. et al. Historical desertification process in Hexi Corridor, China. Chin. Geograph.Sc. 15, 245–253 (2005). https://doi.org/10.1007/s11769-005-0037-3
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DOI: https://doi.org/10.1007/s11769-005-0037-3