甘州区土地利用结构信息熵时空变化分析

分析土地利用结构时空变化是研究区域土地利用优化配置的重要途径之一。基于信息熵理论,以甘州区为例,对其1996~2005年的土地利用结构信息熵变化以及2005年各乡(镇)信息熵差异进行研究,同时运用主成分分析法对信息熵变化的驱动力进行分析。结果表明:甘州区土地利用结构信息熵持续增长,土地利用结构均衡度均较高2;005年各乡镇信息熵差异较大,可划分成4种类型区;人口增长因素和经济发展因素是信息熵变化主要驱动力。

Analysis on Temporal-Spatial Changes of Information Entropy of Land-Use Structure in Ganzhou District

Analyzing temporal-spatial changes of land-use structure was one of the most important ways to study the optimized deployment of the regional land-use.On the base of the information entropy theory,Ganzhou District was taken as an example to study the variances of the information entropy of land-use structure between 1996 and 2005,as well as the variances of the information entropy between villages and towns in 2005 in Ganzhou District.At the same time,the principal component analysis was applied to study qualitatively the driving forces of the variances in information entropy.The results showed that the information entropy was in a state of sustaining growth,and the equilibrium degree of land-use structure was relatively high in Ganzhou District.The variances of the information entropy in villages and towns were quite large,which could be divided into four types of zone.The factors of population increase and the economic development were the main driving forces of the changes in the information entropy.