土地利用结构熵特征与社会经济发展关联分析--以重庆市荣昌县为例

Grey Correlation Analysis of Characteristics of Land Use Structure Entropy with Socio-Economic Development——A Case Study of Rongchang County

应用熵值函数模型和灰色关联分析,对重庆市荣昌县土地利用结构熵与社会经济发展的关系进行分析.结果表明,与1996年相比,到2005年荣昌县土地利用结构熵由0.846 6增加到1.034 4,土地利用结构优势度由0.564 9降到0.468 4,均衡度由0.435 1增加到0.531 6,该县土地利用结构熵呈持续增长态势,土地利用系统的无序度增加,均质性增强,政策、社会经济发展等因素是引起这种结果变化的主要驱动因素;荣昌县土地利用结构熵与人均GDP、城镇化率、土地经济密度、社会商品零售总额存在强关联,其关联度达0.70以上;与固定资产投资、非农产业与农业产业产值比呈中等关联,其关联度达0.697和0.569 3.研究认为,快速工业化、城镇化过程中,政策、投资、消费需求对区域土地利用系统带来了深刻影响,社会经济发展是间接引起土地利用结构熵变化的主要驱动力.

Taking Rongchang county of Chongqing as an example and using the entropy model and grey correlation analysis, this paper analyzes land use structure, and studies the relations of land use structure entropy with socio-economic development in the county. The results showed that, compared with the land use situation of 1996, disorder increased from 0. 846 6 to 1. 034 4, homogeneity increased from 0. 435 1 to 1. 531 6, and dominance dropped from 0. 564 9 to 4684 in 2005, because of impacts of policy and socio-economic development. Land use structure entropy was closely related to per-capital GDP, urbanization rate,land economy density and retail sales of consumer goods, the correlation degree being above O. 70, and moderately related to investment in fixed assets and ratio of non-agriculture and agriculture, the correlation degree being 0. 697 and 0. 569 3, respectively. It is concluded in this paper that in the process of accelerating industrialization and urbanization, policies, investments and demand for consumption have had a pro-found influence on the land use system of the region, and socio-economic development is the main driving force for indirectly inducing the changes in land use structure entropy.