基于NPP-VIIRS夜间灯光数据的淮河流域区域经济差异时空特征分析

Spatio-temporal characteristics of regional economic disparities in Huaihe River Basin based on NPP-VIIRS night light data

基于2012-2018年校正后稳定的NPP-VIIRS夜间灯光数据,以淮河流域38市为研究对象,采用变异系数、泰尔指数和相对发展率等方法,对区域经济差异的时空特征进行分析。结果表明:淮河流域区域经济发展成效显著,但区域差异明显,整体上形成了以省域中心城市为核心的核心-边缘发展空间格局;区域经济总体差异呈现平稳下降的趋势,其中省内差异和河南省内部差异是造成总体差异变动的主要原因;区域经济发展速度极化现象明显,相对发展速度随经济的发展出现分异。

Based on the corrected and stable NPP-VIIRS night light data from 2012 to 2018,this paper takes 38 cities in the Huaihe River Basin as the research object and the temporal and spatial characteristics of regional economic disparity are analyzed by means of coefficient of variation.The results show that the regional economic development of the Huaihe River Basin has achieved remarkable results,but the regional differences are obvious.As a whole,a core-peripheral development space pattern with provincial central cities as the core has been formed.The regional economic disparity shows a steady downward trend,and the provincial disparity and the internal disparity in Henan Province are the main reasons for the change of the regional economic disparity.The regional economic development speed polarization phenomenon is obvious,and the relative development speed differentiates with the economic development.