基于信息熵的天津市产业用地结构变化分析

摘要

根据1996-2008年天津市变更调查数据以及统计年鉴数据,在土地利用分类体系基础上构建产业用地分类,应用信息熵模型对天津市产业用地数量变化和信息熵变化进行分析,并具体研究各类产业用地变化对信息熵的影响程度.结果表明:天津市产业用地结构信息熵和均衡度总体表现出上升趋势,但集中度下降.与信息熵值相关度较高的耕地和未利用地流向经济效益好的第二、三产业用地是使信息熵值升高的主要因素.%Based on the Land Changing Survey and the Statistical Yearbook of Tianjin from 1996 to 2008, this paper establishes a classification system of industrial land use based on the land use classification system, analyses the change of industrial land-use quantity in Tianjin City as well as the change of information entropy with information entropy model, and studies the influence of all types of industrial land use on the information entropy value. The results show that the overall information entropy and the equilibrium degree of the industrial land use structure have been rising while the concentration ratio has been declining. The major factors that make information entropy value rise are the cultivated land which have a higher correlation with information entropy value and the unused land which has been turning to the secondary industry land and tertiary-industry land with better economic benefit.