基于空间自相关与主成分分析的城市土地集约利用空间差异研究——以辽宁省为例

Spatial Variability of Urban Land Intensive Use Based on Spatial Autocorrelation and Principal Component Analysis:A Case Study of Liaoning Province

通过建立城市土地集约利用评价指标体系,运用空间自相关模型和主成分分析法,对辽宁省14个城市2009年城市土地集约利用空间差异进行了研究。结果表明:鞍山城市土地集约利用得分最高,为80.46;葫芦岛得分最低,为40.46;辽宁省城市土地集约利用空间差异明显,城市土地集约利用水平呈"凸"形分布,中部高,东西两翼低;城市土地集约利用空间自相关水平显著,空间集聚明显,在鞍山、营口城市周围呈现一个高度集约的热点区,集约利用水平低洼聚集区不明显。

Abstract： By the use of the spatial autocorrelation method and principal component analysis, through the establishment of evaluation index system, the urban land intensive use and spatial variability for fourteen cities in Liaoning Province in 2009 explored. The result showed that Anshan city land intensive use was the highest, score 80.46; Huludao was the lowest, score 40.46. The spatial variability of urban land intensive use were obvious, the central was higher and bath sides were low, the level of it appeared ＂convex＂ spatial distribution. The spatial autocorrelation had positive correlation, spatial agglomeration was obvious and had one hotspots around Anshan and Yingkou, the low-lying parts of land use was not obvious.