Abstract Based,on the information entropy principle and the land utilization change investigation data from 1997 to 2008,the information entropy value of land use structure in Shuyang County was analyzed from timing sequence. As indicated by the results,the information entropy value from 1997 to 2008 firstly increased, then fluctuated, and converged at last. The value was in close relationship with the tightness of policies in land management especially in farmland protection. The entropy value of Shuyang was lower,while the order degree of land use structure in this area was relatively high. Therefore, the economic conditions can not be fully reflected by the value of land use structure information entropy, all relevant factors should be considered to realize a win-win achievement of economic development and land use structure optimization.%利用信息熵原理,采用1997～ 2008年土地利用变更调查数据,从时序上对沭阳县土地利用结构信息熵值进行了分析.结果表明,沭阳县1997～2008年土地利用结构信息熵呈现出先增加—波动—后收敛的趋势,土地利用结构信息熵值的高低与土地管理政策特别是耕地保护政策的紧松密切相关；沭阳县土地利用结构信息熵值较低,土地利用结构有序度较高；土地利用熵值的高低不能完全反映经济发展水平的高低,需要综合考虑各相关因素,实现经济发展与土地利用结构优化的双赢.
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