绵阳市土地利用结构信息熵时空差异研究

根据1995年绵阳市土地利用详查数据和2009年绵阳市第二次土地调查数据,运用信息熵理论对绵阳市所辖各区县土地利用结构的空间差异和时序变化进行分析.结果表明,信息熵数值的高低与经济发展水平存在相关性,经济增长迅速的主城区处于信息熵高值区和增长区,经济相对落后的山区县处于信息熵低值区和下降区,中等经济水平的丘陵县处于信息熵中值区.一个良好的土地利用结构,其土地分异应介于混沌与有序之间,因而,对于不同经济发展水平的区域,应采取相应措施适度提高或降低信息熵,以促进区域经济的发展.

Analysis of Temporal-spatial Disparities in the Land Use Structure in Mianyang City Based on Information Entropy

Based on the land use survey data on Mianyang City in 1995 and the second land survey data on Mianyang City in 2009,the temporal and spatial variations of land use structure in Mianyang City were analyzed based on information entropy.The results showed that there was a significant correlation between information entropy and economic development level.The economic developed main urban area was located in the high value area and growth region of information entropy,the economy-backward mountain counties was located in the low value area and decreasing region of information entropy,and the economic medium hilly county was located in the median value area of information entropy.The good land use structure lied between chaos and order.Therefore corresponding measures were used to improve or decrease information entropy and promote economic development.