县级制图地理分区的多元分析方法——以开封市郊为例

The Method of Multivariate Analysis to the Geographical Regionalization of Mapping at County-level

本文以开封市郊区地表覆盖分区为例,选择了最能表征该区特征的土地开发利用程度、地表覆盖类型及构成、土地利用集约化水平及收益等30个指标作为分区指标,应用多元分析方法,对开封市郊区地表覆盖进行了分区探讨。首先以行政村为总体样本单元进行PCA计算,并确定一级区。其次再以PCA的指标得分进行离差平方和法的聚类分析,在此基础上,结合以往分区成果,对类别单元作出合理调整,确定二级区。通过判别分析验证分区合理性。

Taking the earthsurface cover of Kaifeng suburb as an example, this paper chooses thirty important elements which can best represent the cover types of Kaifeng suburb and discusses the regionalization of earthsurface cover of Kaifeng suburb by means of multivariate analysis.