【摘要】 以河南省为研究区,利用2000—2018年夜间灯光数据、NDVI数据和VANUI数据提取城市建成区。在建成区面积和灯光强度两个方面的变化进行论述,利用景观指数对河南省城市景观进行定量分析,采用主成分分析法对河南省建成区扩张驱动力进行分析。结果表明,河南省建成区面积从1 937 km~2增加到5 155 km~2;灯光强度从75 948增加到287 747,两者增长趋势呈直线变化;研究区斑块范围不断扩张,首位度增大,大城市辐射作用加强,各城市之间联系越来越紧密,一体化程度提升;经济规模、人口交通和人民生活水平是引起城市建成区变化的主要驱动因素。研究可为其他地区的城市扩张提供参考。更多还原

【Abstract】 Taking He′nan province as the research area, this paper uses the night light data, NDVI data and VANUI data from 2000 to 2018 to extract built-up area. The changes of built-up area and light brightness area are discussed, and then it carries on the quantitative analysis of He′nan province city landscape, and then the landscape index is used to analyze the urban landscape of Henan province quantitatively. On this basis, the principal component analysis method is used to analyze the driving forces of the expansion of the built-up area in He′nan province. The results show that the built-up area expansion in He′nan province is increased from 1 937 km~2 to 5 155 km~2; The light intensity increased from 75 948 to 287 747, and the development trend of both shows a linear change. The patch scope in the study area has been continuously improved, the primacy degree has been increased, the radiation effect of large cities has been strengthened, all cities are more and more closely linked, and the degree of integration has been strengthened. Economic scale, population, traffic and people’s living level are the main driving factors causing the change of urban built-up area. This study can provide reference for urban expansion in other areas.更多还原