The study on dynamic change of cultivated land resources and its changing causes——A study case of Shaanxi Province

Aim Based on amount of cultivated land and the correlated statistical data of social economy during the period of 1996~2005,the paper analyzed the change of cultivated land resources and causes of the changes in Shaanxi,China,especially made the develops various factors of social economy.Methods It is adopted the methods of determine the nature and determine the amounts of the components of a substance being tied in wedlock,the correlation regression analysis and the multivariate regression analysis are outstanding.Results ① amount of cultivated land decreased from 335.90×104 hm2 to 278.85×104 hm2,the rate of reduction is 1.84% every year;② conversion of cultivated land to ecological use is the main cause of its reduction in the recent 10 years,which gets to 30.74% of the total of ecological use in 2005;the land reclamation,there organization and the development are the factors of the cultivated land's increasing and all of them had the certain proportion;③ the amount of cultivated land change has been well correlated to the development of economy and society,and especially more closely related with population factor.Conclusion Should adopt the strategy countermeasure from education,laws and policies,host aspect,so that to protect and keep cultivated land resource and their sustainable use in Shaanxi,China.