重庆市土地利用结构信息熵时序变化及驱动力研究

A Study of Dynamic Change in Information Entropy of Land Use Structure in Chongqing City and Its Driving Forces

运用信息熵理论对重庆市1997-2006年的土地利用结构信息熵进行计算与分析。描述区域土地利用信息熵在时间尺度上的动态演变规律,并对影响土地利用结构信息熵的驱动力进行典型相关分析。结果表明:整体上,重庆市土地利用结构信息熵随时间呈不断上升趋势,土地利用结构趋向均衡、均质性逐渐增强。影响重庆市土地利用结构信息熵演变的主要社会经济驱动因素为粮食播种面积、人均GDP、固定资产投资额总计、农民人均纯收入、城镇化率、总人口和人均蔬菜产量。

Based on the information entropy theory, this paper calculates and analyzes the information entropy of land use structure of Chongqing City from1997 to 2006 in order to describe the dynamic evolution law of regional land use and to do correlation analysis between driving forces and information entropy of land use. The results indicate that the information entropy of land use structure increased progressively, and that the land use structure inclined to be balanced. The main driving forces which affected dynamic evolution of land use structure of Chongqing City include grain sown area, per capita GDP, total investment of fixed assets, per capita net income of the farmers, urbanization rate, total population and per capita vegetable production.