The development of economic gravity center and spatial difference of economy in Fujian from 1989 to 2008

The article led into the concept of gravity centre,wielded gravity centre computing method based on economic space structure,and identified economic gravity centers of Fujian Province from 1989 to 2008.After exporting space change pictures of economic gravity center points by GIS,it analyzed the dynamic variation and the change laws of economic gravity centers by such indices as moving direction,moving distance,space correlativity in the province in the past 20 years.The results show that the economic gravity centers are mainly situated between southeast Dehua County and northeast Yongchun County,which are basically close to the geometric center.However,this paper presents a tendency that the distance between economic gravity center and geometric center is expanding unceasingly,which indicates that economic development in Fujian is becoming more and more unbalanced and displays a tendency which inclines to the southeast.The general moving trend of economic gravity center is from northwest to southeast during the past 20 years,while the moving track displays some fluctuation.The annual moving distance and direction display a positive correlation between regional economic development levels and speed and regional development policies in the province.