WU Han,WANG Ming,LIU Kai.Condition assessment of recovery status in Wenchuan Earthquake severely-stricken areas based on night light remote sensing data[J].,2022,31(02):066-76.[doi:10.13577/j.jnd.2022.0207]





Condition assessment of recovery status in Wenchuan Earthquake severely-stricken areas based on night light remote sensing data
吴翰13 汪明13 刘凯23
1. 北京师范大学 地表过程与资源生态国家重点实验室, 北京 100875;
2. 北京师范大学 环境演变与自然灾害教育部重点实验室, 北京 100875;
3. 应急管理部教育部减灾与应急管理研究院, 北京 100875
WU Han13 WANG Ming13 LIU Kai23
1. State Key Laboratory of Earth Surface Processes and Resource Ecology, Beijing Normal University, Beijing 100875, China;
2. Key Laboratory of Environmental Change and Natural Disasters, Ministry of Education, Beijing Normal University, Beijing 100875, China;
3. Academy of Disaster Reduction and Emergency Management, Faculty of Geographical Science, Beijing Normal University, Beijing 100875, China
Wenchuan earthquakeDMSP-OLS and NPP-VIIRSdata integrationurban scale indexgrowth rate
A series of unprecedented measures have been taken to restore and rebuild in China in respect of the far-reaching influence on society and economy by Wenchuan earthquake. In this paper,the recovery status of the earthquake-stricken areas was analyzed based on the corresponding light index. For cities and counties with intensity of seven degree or above,the macro recovery status was assessed. Light index data DMSP-OLS and NPP-VIIRS were integrated by fitting technology of powerful number,so as to solve the data matching problem caused by parameter difference between satellites and sensors. The validity of light index was extended,lasting from 1992 to 2012. With city size index and growth rate as the main indicators,the recovery status in Wenchuan earthquake-stricken areas was assessed. The research results proved that these cities and counties went through a threeto six-year self-adjustment period after the three-year rapid development with external assistance. The recovery phase was around 8 years in average. Among 15 severely-afflicted cities and counties,nearly 80% of them recovered the light index to the status before the earthquake in a decade. Some of them developed rapidly owing to external investment in construction,so the light index was far beyond the one before the earthquake. However,there were huge differences in the post-earthquake recovery status. The recovery status for a few cities and counties was still not optimistic in terms of light index and development indicators.


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更新日期/Last Update: 1900-01-01