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- W2386469209 abstract "During the recent 2000 years, about 45 ancient cities were abandoned from desertification in Hexi Corridor. Among them, 22^2% were abandoned during South and North Dynasties, 24^4% during the end of Tang and the Five Dynasties, and 53^3% during Ming and Qing Dynasties. At the same time, main lakes were shrinking rapidly during the 5th～6th century and the end of Qing Dynasty. The climate in these periods was relatively arid and cold when frequent dusts happened. The phases of these changes indicated synthetically that there were three periods of desertification enlarged rapidly in North China. They were South and North Dynasties,the end of Tang Dynasty and Five Dynasties, the Ming and Qing Dynasties. The macro|process of desertification in the studying region was controlled mainly by the climatic changes. But from the facts of the density of population in the middle of Qing Dynasty had exceeded the critical index of population pressure in arid land and the rate of the utilization of water resource had exceeded 40% in Hexi Corridor, this paper also suggests that the human activities have played an important role in desertification processes of the study area mainly during the recent 300 years." @default.
- W2386469209 created "2016-06-24" @default.
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- W2386469209 date "2003-01-01" @default.
- W2386469209 modified "2023-09-25" @default.
- W2386469209 title "Climatic and Humanistic Background of Desertification Process in the Recent 2000 Years in Hexi Corridor, China" @default.
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