Abstract
Using the method of district statistics to verify the correlation of NPP-VIIRS night light data and GDP, the difference between counties in Shandong from 2012 to 2019 can be analysed and the changes of living standards can be quantified. After obtaining the total value of night light brightness in each county, the coefficient of variation is used to calculate the degree of dispersion of each county, and then the regional differences of each city in 2019 and the inter-annual changes from 2012 to 2019 are analyzed and displayed. In conclusion, living standards of different countries in Shandong are different, and the difference becomes obvious with the growth of GDP. However,the difference of living standards of most countries becomes smaller in recent years.
Highlights
With the continuous improvement of social living standards, the differences between residents ' living standards are gradually increasing, and the gap between rich and poor is becoming more and more obvious
In order to better represent the difference in living standards of residents in each county, the ratio of nighttime light data of a county to the total population at the end of the year is calculated to obtain the per capita light brightness value, as shown in Equation ( 2 )
The calculation results show that R2 is about 0.9, which proves that there is a strong correlation between GDP and light brightness value in Shandong Province, and shows that the night light brightness value can reflect the living standards of residents in various cities to a certain extent
Summary
With the continuous improvement of social living standards, the differences between residents ' living standards are gradually increasing, and the gap between rich and poor is becoming more and more obvious. In order to quantify the gap between the living standards of residents, the night light data is used to simulate the living conditions of residents by using the brightness value of night light, and the living standards of residents are numerically calculated. With the global VIIRS nighttime lighting products[6] from 2012 to 2019 calculated by monthly average of Elvidge CD, the Chinese region is selected to better reflect the living standards of Chinese residents. It is expected to study the difference in the living standards of the residents in the cities and counties of Shandong Province, the gap between the rich and the poor among the residents, resource reasonable configuration, targeted assistance and the formulation of relevant policies will play a guiding role
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