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Study on the Correlation between the Dynamic Change of Cultivated Lands and the Social-economic Development in Xi'an City during the Period of 1989-2003

YANG Yong, REN Zhi-yuan(College of Tourism and Environment Sciences,Shaanxi Normal University,Xi'an 710062,China)  
In this paper,the dynamic change of the area of cultivated lands in Xi'an City is analyzed using the statistical data of Xi'an City during the period of 1989-2003.A correlation analysis on the selected 5 social and economic indices including the per capita GDP,investment of fixed assets,population,urbanization rate and proportion of tertiary industry is carried out so as to quantitatively analyze the relationships between the change of the area of cultivated lands and the social and economic development.The results show that the area of cultivated lands in Xi'an City was gradually reduced during the whole investigated period from 1989 to 2003,particularly the per capita area of cultivated lands was continuously decreased with the economic development,population growth, enlargement of urban area and construction of infrastructure.However,the cultivated lands in certain area in Xi'an City have to be used for satisfying the land demand of social and economic development in the future.Therefore,it is considered that the safety of food supply in the future cannot be ensured by relying on the current cultivated lands.However,the impact of social and economic development on the reduction of the area of cultivated lands will be gradually decreased with the change of economic development pattern,effective population control,and perfection and effective implementation of the management system of cultivated lands.
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