TROPICAL GEOGRAPHY ›› 2015, Vol. 35 ›› Issue (3): 379-385.

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Township GDP Estimation of the Pearl River Delta Based on the NPP-VIIRS Night-Time Satellite Data

CHAI Ziwei1,WANG Shuailei2,QIAO Jigang3   

  1. (1.Guangdong Environmental Monitoring Center,Guangzhou 510308,China;2.School of Geography and Planning,Sun Yat-sen University,Guangzhou 510320,China;3.School of Geography & Tourism,Guangdong University of Finance & Economics,Guangzhou 501320,China)
  • Online:2015-06-05 Published:2015-06-05

Abstract:

Though the high resolution data of GDP distribution is difficult to collect, it is very important for small scale regional development research. Night-time satellite images can be used to estimate GDP of administrative unit. In this paper, DMAP-OLS and NPP-VIIRS are used to estimate township GDP of the Pearl River Delta district: DMAP-OLS data are employed to modify NPP-VIIRS data, and then regression model about GDP and NPP-VIIRS Pixel brightness are built to estimate township GDP. Regional difference coefficients are employed to adjust the township GDP based on city level GDP data. Experiments show that the estimating accuracy of township GDP value in 2013 a reaches to 85%, and NPP-VIIRS data is valid data resource for township GDP estimation.

Key words: night-time satellite data, GDP estimation, NPP-VIIRS, the Pearl River Delta