基于NPP-VIIRS夜间灯光数据的上海市城市空间发展与驱动力分析

Analysis of Urban Space Development and Driving Force in Shanghai Based on NPP-VIIRS Night Light Data

文章采用校正后的影像对2012-2019年上海市建成区范围以及灯光强度进行提取和反演,结合经济数据分析建成区的空间变化以及背后的驱动力因素,得到结论如下:①2012-2019年上海市建成区面积增长速度为72.13km2/年,且近五年增长速度明显减缓。②上海市建成区主要向东南方向扩张,主要驱动机制是政策扶持,高技术产业集聚带来的规模经济与空间溢出效应以及外资的投入。③金融集聚对上海市城市发展具有显著促进作用,人口密度的增加与第一产业的发展对上海市发展有显著抑制作用。

This paper uses the corrected images to extract and invert the scope and light intensity of the built-up area of Shanghai from 2012 to 2019,and combines the economic data to analyze the spatial variation of the built-up area and the driving forces behind it.The conclusions are as follows:①2012-2019,the growth rate of built-up area in Shanghai is 72.13 Km2/year,and the growth rate slowed down significantly in the recent five years.②The built-up area of Shanghai mainly expands in the southeast direction,and the main driving mechanism is the policy support,the scale economy and space spillover effect brought by the agglomeration of high-tech industries and the investment of foreign capital.③Financial agglomeration has a significant promoting effect on the urban development of Shanghai,and the increase of population density and the development of the primary industry have a significant restraining effect on the development of Shanghai.