[1]JIA Zhaoliang,ZHENG Chuan,LI Yuanxin,et al.Study on Spatialization of Demographic Data for Earthquake Emergency:A Case Study in Dali Bai Autonomous Prefecture of Yunnan Province[J].Journal of Seismological Research,2020,43(04):751-758.
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Study on Spatialization of Demographic Data for Earthquake Emergency:A Case Study in Dali Bai Autonomous Prefecture of Yunnan Province
Journal of Seismological Research[ISSN 1000-0666/CN 53-1062/P] Volume:
43
Number of periods:
2020 04
Page number:
751-758
Column:
Public date:
2020-09-17
- Title:
- Study on Spatialization of Demographic Data for Earthquake Emergency:A Case Study in Dali Bai Autonomous Prefecture of Yunnan Province
- CLC:
- P315.94
- DOI:
- -
- Abstract:
- In order to improve the accuracy of population estimation and the visual effects of population spatial distribution in earthquake disaster region,the method of population spatialization of Dali prefecture is studied based on the FROM-GLC10 land cover data and the NPP/VIIRS night-time light data and the demographic data of towns.And the grid data of population of 50 m×50 m in Dali prefecture is made.The correlation coefficient,relative error and average relative error are used to test the simulated results.And the application analysis of the simulated results are made by Yangbi MS5.1 earthquake and Yunlong MS5.0 earthquake.The results show that the spatial distribution of population can be effectively extracted and the differences of spatial distribution of population can be distinguished by the land cover data and night-time light data.The correlation coefficient R2 between simulated population and actual population is 0.955,and the average relative error between simulated population and actual population is 14.306%,and the relative error of 82% villages is within±20%.It shows that the data of simulated population has high precision.The relative errors between the data of simulated population and the data of actual population of the two earthquakes are -1.67% and -2.27%,respectively,and the simulation results of population spatial distribution can directly reflect the population distribution of the disaster area.The research results can provide data support for earthquake emergency.
- References:
- -
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Last Update:
2020-09-17