信息熵在区域土地利用结构研究中的应用——以重庆市江北区为例

Application of Shannon Entropy in the Research of Land-Use Composition ——A Case Study of Jiangbei, Chongqing

提出了信息熵的2个应用领域:①信息熵是土地利用系统有序程度的标志,其变化能反映系统的状态与演 化趋势.②信息熵的序列变化可用来刻画土地利用结构的动态演变.分析了江北区1996年至2003年信息熵的变 化,认为土地利用系统呈有序度降低.

Shannon entropy has important applied meaning in research of land-use composition. Two applied realms of Shannon entropy have been brought forward: ① Shannon entropy is the symbol of order degree of land-use system and the variation of it reflects evolving state and trend of system. From the change of Shannon entropy between 1996 and 2003, a decrease in order degree of regional land-use system can be seen. ② Serial change of Shannon entropy can be used to describe evolvement of land-use composition. The change in entropy values indicates that transforming velocity of regional land types is quickened and regional economy is developing rapidly. Based on one of essential characters——symmetry, Shannon entropy has limit in depicting land-use composition fractal dimension.