武汉市土地集约利用时空分异及障碍因素诊断

运用主成分分析法、GIS方法分析武汉市1996~2010年土地集约利用的时空特征并对其进行障碍因素诊断。研究结果表明:1996~2010年武汉市的土地集约利用程度稳步上升。武汉市土地集约利用经济效益、社会效益和土地结构表现为汉口—武昌—汉阳—郊区圈层式递减分布特征,生态效益总体上表现为北高南低的特征,土地集约利用的投入水平呈现以江汉区为核心的圈层式递减分布特征,土地集约利用可持续指标表现为江北片-江南片梯度递减的空间分布特征。通过障碍因素诊断得出具体影响各区域土地集约利用程度提高的因素。

SPATIO-TEMPORAL FEATURES OF INTENSIVE LAND USE AND DIAGNOSIS OF ITS OBSTACLE FACTORS IN WUHAN CITY

The purpose of the paper is to analyze the spatial temporal features of intensive land use in Wuhan City from 1996 to 2010, and to diagnose its obstacle factors using the methods of principal component analysis, GIS analysis and obstacle factors analysis. The results showed that the degrees of land use intensity rose steadily from 1996 to 2010. The results also showed that the economic benefits, social benefits and the level of land use structure declined in a “ring layer” model, and the ecological benefits were higher in the north district than that in the south district. In addition, the input level of land intensive use in Jianghan District presented circles as the core of the decline. The sustainable level of intensive land use decreased progressively from Jiangbei plate to Jiangnan plate in grades. Through the obstacle factors analysis, we can get the obstacle factors that affect the level of intensive land use specifically