Comparison on Urban Intensive Land Use in He′nan Province Based on Principal Component Analysis and Matter-element Model

Improving the intensive use degree of urban land is of importance to alleviate the contradiction between human being and land resources and improve land use efficiency.According to the intensive use connotation of urban land,a set of indexes is established to determine the intensive use degree of urban land.A comparative analysis is made to determine the intensive use degrees for the urban lands of 17 cities in He′nan Province using principal component analysis and matter-element method.Results show the two methods have greater similarities in the order,classification and spatial distribution of evaluation results,despite of some differences.The cities in the northern,western and southwestern parts of the province have more intensive use degree of urban land than the cities in the eastern and southeastern parts.The two methods are quite different in the analysis of internal factors about intensive use of urban land.It is suggested that all the cities should increase land investment and improve land environmental quality in entire province in the future to promote the increasing intensive use of urban land.