中文摘要：

区域是一个开放的系统，区际相互作用和相互影响可以导致区域在许多特性上存在高度的相关性。本研究通过对环鄱阳湖地区43个县（市）第一产业增加值（1995—2007年）的全局空间自相关性和局部空间自相关分析，结果表明：①1995--2007年环鄱阳湖地区县域农业经济之间的空间差异总体上大致呈现缩小趋势；②环鄱阳湖地区县域农业经济局部空间差异不断缩小，特别是该地区的北部和南部，表现出与周边地区同步发展态势；③自1995年以来环鄱阳湖地区的南部县域对整个区域的极化效应明显大于其扩散效应，其南部和北部地区内部分别形成了与周边地区显著相似的区域。

英文摘要：

Region is an open system. The economic growth in each region not only depends on it＇s own characteristics, but also on those of the regions that form the neighborhood to which it belongs. By means of global and local spatial autocorrelation analyses, this paper investigates the spatial dynamics of regional inequalities at the county level in Poyang lake ring by analyzing increasing value of primary industry data, 1995-2007. Some results are as follows： （1）The over-all county level spatial disparities of regional agricultural economy in Poyang lake ring have been greatly decreased over time, 1995-2007. （2）Moreover, the regions and their neighbors tend to have the similar trends towards shrinking the disparities of regional agricultural economy, especially the counties （orcities） in southern or northern Poyang lake ring.（3） The significant spread or trickling down effect has been observed across southern Poyang lake ring since 1995. But for the whole region, its polarization effect is beyond it＇ s spread effect because significant lagging areas located in northern Poyang lake ring have appeared with the growing up of southern region.