基于DMSP/OLS夜间灯光遥感的榆林经济发展时空模式研究

Research on Spatialtemporal Pattern of Yulin Economic Development Based on DMSP/OLS Nighttime Imagery

研究陕西省榆林市在县级尺度的GDP（gross domestic product）分布,基于2000-2012年的夜间灯光数据及GDP统计数据,运用相关分析和回归分析手段,建立夜间灯光数据与GDP统计数据之间的关系模型,研究发现,夜间灯光数据与GDP相关系数较高,均大于0.9。对榆林市GDP在空间和时间上的发展模式进行分析。结果表明,榆林市经济发展形成了明显的南北格局,具有北部快、南部慢的特点。

Existing studies mainly focus on spatializing domestic GDP（gross domestic product）at provincial level.This paper tries to investigate the GDP distribution of Yulin,Shaanxi province.On the basis of statistical GDP data as well as nighttime light data from 2000 to 2012,correlation analysis and regression analysis were conducted to construct the relationship between these two types of data.Analysis result shows that significant linear relationship with a correlation coefficient is greater than 0.9,so the GDP density maps at county level for different years were produced.These density maps are then overlaid for a spatialtemporal GDP pattern analysis.Results show that the economic development of Yulin has an obvious north-south pattern.