Abstract:Based on the data of thunderstorm days from 1981 to 2010, lightning location from 2012 to 2019, and GDP of the kilometer grid and population in 2015 in Liaoning Province, using the AHP method, risk matrix method and ArcGIS spatial analysis method, the temporal and spatial characteristics of lightning activities in Liaoning Province are analyzed, and the lightning susceptibility level and response level of the 10 km×1 km grid area are obtained. The results indicate that the number of days of lightning activity showed an overall downward trend from 2012 to 2019 in Liaoning Province. Lightning activities mainly occurred from June to September. The maximum total and negative lightning activities appeared in August, and the maximum positive lightning activities appeared in June. The spatial distribution trend of the annual average number of thunderstorm days in Liaoning shows that there were more thunderstorm days in the northern Liaoning than in the southern, and more in the eastern and western Liaoning than in the central part. From the perspective of topography and geomorphology, in the spatial distribution, the numbers of thunderstorm days in mountain areas were greater than those in plains areas, and larger in plains than in coastal areas. The lightningprone areas in Liaoning showed a decreasing distribution trend from the central hills and plains to the eastern and western mountainous areas. The lightningprone areas roughly overlapped with economically developed areas, so attention should be paid.
