Research on Spatial-temporal Pattern Change of Metropolitan Area Based on Nighttime Light Remote Sensing Data:A Case Study of Guiyang Metropolitan Area
Based on the annual nighttime light remote sensing data of visible infrared imaging radiometer suite(VIIRS),this paper studies the total amount of nighttime light remote sensing,the area of built-up area and the position of gravity center in Guiyang metro-politan area.The results show that from 2012 to 2021,the nighttime light amount scale and built-up area of the metropolitan area have increased to a certain extent,among which Guiyang has the largest growth rate,further widening the gap with other regions;at the same time,the spatial pattern of economic activities in the region is in the"northeast southwest"direction,and the center of grav-ity is located near Guiyang city and moves towards south.
nighttime light remote sensingmetropolitan areaspatial patternNPP/VIIRS data
NETL
NSTL
万方数据
