江苏省城市土地集约利用空间差异的主成分研究

Principal Component Analysis of the Spatial Differences of Urban Land Intensive Use in Jiangsu Province

城市土地集约利用是城市发展的必然要求。从区域空间的角度,建立城市土地集约利用指标体系,采用主成分分析法,对江苏省13个地级市城市土地集约利用情况进行了测度,并结合GIS技术对结果进行了划分。结果表明:(1)苏南地区城市土地利用最为集约,苏中次之,苏北城市土地低度利用; (2)在江苏省域空间上,城市土地集约利用呈阶梯状分布;(3)江苏省城市土地集约利用与经济发展水平呈正相关。最后提出了江苏省城市土地集约利用的方向和建议。

Urban land intensive use is of great necessity for the development of a city. From the regional spatial perspective ,this paper has established an index system and calculated the urban land intensive use of 13 cities in Jiangsu Province by means of principal component analysis. The result of the calculation is graded by GIS. Findings show that urban land use in the South of Jiangsu Province is more intensive than that in the central and northern areas,that urban land use is of a stepping distribution,and that urban land use is in positive correlation with the economic development. This paper has also put forward some advice on urban land intensive use in Jiangsu Province.