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Remote Sensing Technology and Application  2022, Vol. 37 Issue (4): 929-937    DOI: 10.11873/j.issn.1004-0323.2022.4.0929
    
Analysis of Inequality of Socioeconomic Development on both Sides of Hu Huanyong Line Using Nighttime Light
Dan Zou1(),Yuke Zhou2(),Jintang Lin1,Tianyu Chen3,Zhijie Wu1,Hong Wang1
1.School of Resource Engineering,Longyan University,Longyan 364012,China
2.Key Laboratory of Ecosystem Network Observation and Modeling,Institute of Geographic and Nature Resources Research,Chinese Academy of Sciences,Beijing 100101,China
3.School of Geographic Science and Surveying engineering,Suzhou University of Science and Technology,Suzhou 215004,China
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Abstract  

Using remote sensing technology to evaluate the social and economic development situation and differences between East and west China is of great significance for China to formulate development strategies and implement them. In this paper, we use remote sensing-derived nighttime light data to characterize the social and economic development, and analyze the development rate and gravity center transfer of East and West (on both sides of Hu Huanyong line) at the county level. Combined with remote sensing vegetation index, the ratio index of "light/vegetation" is introduced to analyze the dynamic trade-off between economic development and green space. The proportion of light in different distance buffer zone of coastal zone was compared with that in the West. Gini coefficient is used to measure the unbalanced development of the East and the West. The results show that: with the rapid development of social economy in the whole country, the East and the west, the lighting center is basically stable, drifting in a small range in Kaifeng City, Huaibei City and the south of Alashan; The coastal zone of China has gathered high-intensity social and economic activities, and the total amount of light in the 30 km buffer zone is almost equal to that in the West; The Gini coefficient in the East and West decreased year by year. The spatial correlation analysis of the ratio index shows that the areas along the Bohai Sea, Yellow Sea and East China Sea are high-intensity development areas tending to be saturated, the adjacent inland counties are potential high-intensity development areas, and the Qinghai Tibet and southwest regions are weak development areas. The results show that the internal economic development difference between the East and the west is still significant, but the balance is getting better. The eastern development should pay more attention to the maintenance of greening trend. Affected by the spillover of coastline development results, the inland areas will gradually enter the stage of rapid development. The conclusions of this study can be used for reference in accurate identification of key areas of Rural Revitalization and ecological restoration planning in China.

Key words:  Nighttime light      Hu huanyong line      Development inequality      Gini coefficient      Coastal zone     
Received:  24 June 2021      Published:  28 September 2022
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Corresponding Authors:  Yuke Zhou     E-mail:  chinazoudan@126.com;zhouyk@igsnrr.ac.cn
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Dan Zou
Yuke Zhou
Jintang Lin
Tianyu Chen
Zhijie Wu
Hong Wang

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Dan Zou,Yuke Zhou,Jintang Lin,Tianyu Chen,Zhijie Wu,Hong Wang. Analysis of Inequality of Socioeconomic Development on both Sides of Hu Huanyong Line Using Nighttime Light. Remote Sensing Technology and Application, 2022, 37(4): 929-937.

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http://www.rsta.ac.cn/EN/10.11873/j.issn.1004-0323.2022.4.0929     OR     http://www.rsta.ac.cn/EN/Y2022/V37/I4/929

Fig.1  Spatial distribution of multi-year average night light and NDVI data (1992—2015)
Fig.2  Analysis of the multi-year trend of nighttime light and NDVI in China, east and west of Hu Line
Fig.3  Trajectories of economic center of gravity in China, the east and the West
Table 1  Comparative analysis table of coastal zone lights and western county lights of Hu Line
Fig.4  Change curve of Gini coefficient
Fig.5  Change slope of NTL/NDVI
Fig.6  NTL/NDVI index aggregation and hot/cold spot distribution
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