信息熵在土地利用结构动态变化研究中的应用r——以重庆市北碚区为例

摘要

Based on the theory of transfer flow and the information entropy, this research take Beibei district as an example and analyze the dynamic change of the transfer flow and the structure information entropy in the using of Beibei district land during 2005-2015, and we discuss the changes in the use of land of each type and the factors that affect the entropy size for nearly 11 years .The results are as follows : (1) During the study period, the current construction land is increasing continuously, the cultivated land is decreasing, other types increases and decreases. (2) A large difference showed in the dynamic degree of unitary land use, the proportion of the dynamic degree in urban and industrial land is 6.6%, the same situation occurs in the transport land, maintaining a high proportion, arable land showed a slow downward trend in this 11 years, and the dynamic change is not pronounced. (3) Due to the increase of land of residential areas, industrial and traffic land, the decrease of cultivated land and other land makes the degree of land use structure balance and the information entropy fluctuate upward trend, while the dominance shows fluctuating decline situation. Some suggestions of rational use of land resources in Beibei district were put forward at last.%基于转移流和信息熵理论,以北碚区为例,分析了2005~2015年重庆市北碚区土地利用的转移流和土地利用结构信息熵动态变化,对近11 a来土地的各个利用类型的增减变化和影响熵值大小的因素进行了讨论.结果表明:(1)研究期内北碚区建设用地持续增加,耕地不断减少,其他地类有增有减.(2)单一土地利用动态度差异较大,城镇村及工矿用地6.6%、交通运输用地6.6%,维持较高占比,耕地11 a内呈缓慢下降趋势,动态度变化不明显.(3)由于居民点及工矿用地和交通用地的增加,耕地和其他土地的减少使得北碚区土地利用结构均衡度和信息熵均呈现波动式上升事态,优势度呈现波动式下降事态.并提出合理利用北碚区土地资源的建议.