In recent years,the cultivated land in most parts of Xinjiang showed expansion trend under the background of constant reduction of countrywide cultivated land. Takes the typical arid area oasis of Charchan river, using maximum likelihood and man-machine interactive method extract information of cultivated land from the images of 1972, 1990, 2001, 2011 of study area, combining with statistical methods, analyzed the general trend of temporal and spatial variation of cultivated land in Charchan Oasis and the change of multiple-cropping index. The study no longer takes increasingly prominent contradiction between population, grain and cultivated land as a starting point,study the human driving forces of the expansion of cultivated land in smaller regional scale, with fully considering the demographic factors and adding other factors, such as irrigation facilities, irrigation methods, policy factors, economic benefits and market orientation. Results showed that since 1970, the area of cultivated land showed general growth trend, multiplecropping index generally rised, and still had room to increase. Population growth, irrigation facilities and methods, policies, economic benefits and market affected the expansion of cultivated land in different way and time stages. And the main driving forces which were responsible for the rapid expansion of cultivated land in recent 10 years were policies, economic benefits and market.
Key words
expansion of cultivated land /
human driving forces /
arid area /
Charchan Oasis /
Xinjiang
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