Using the methods of traditional statistics and ESDA, the temporal and spatial characteristics of county economy differences in Dongting Lake Ecological Economic Zone were analyzed from 2001 to 2011. The resuits show that the absolute difference of economic zone enlarges constantly, but the relative difference has a narrowing trend; the differences among four cities, internal difference in Yueyang City and Changde City are the main contributions to the differences. High-level counties are urban districts of the prefecture-level city, the level ...