The temporal and spatial characteristics of dynamic change of cultivated land in Jiangxi province was analyzed based on the cultivated land change and social economic data during 1990-2009. Meanwhile

the main driving force of cultivated land quantity change in Jiangxi Province was revealed using principal component analysis combining multivariate linear regression analysis. The results showed that cultivated land quantity change reduced at first and then increased; There were significant differences between different regions and the relative land change rate was strikingly different at different period; The main driving factors of cultivated land dynamic changes in Jiangxi Province included three main categories: economic growth

social development and agricultural science and technology advancement. Overall

the cultivated land quantity change had significant correlation with population

GDP

the social fixed assets investment

the three major industries

cultivated land output rate and farm machinery total power. There are two main driving factors in the first principal component which are economic and population. Moreover

the development of agricultural science and technology is the main factor in the second principal component.