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CPS1282 Liu J. et al.
calculation, as shown in figure 6. After the sample size uniform method for
classification, calculation results can be divided into level 3, the higher its
value, on behalf of the greater the risk.

Figure 6 Sketch neighborhood analysis algorithm

In addition, altitude and lightning is inseparable, the digital elevation
model (DEM) data extraction can be obtained after region above sea level, as
shown in figure 7, as shown in figure 8, the greater the terrain changes, the
greater the value of the higher elevation after its weighted, on behalf of the
greater the risk.
The figure 3 and figure 4 shows that affected by the ground flash itself
stronger area mainly concentrated in the central WuChuan County, tumed left
flag in the west, and county and qingshuihe southwest of Middle East.
Influence by the flag county center gradually spread to the surrounding.

Figure 7 elevation raster data Figure 8 terrain grid data

Figure 5 shows the Hohhot regional soil conductivity high and low, high
conductivity region mainly for Hohhot city, tumed left flag, togtoh county and
qingshuihe larger region urbanization degree; In addition, pastoral areas and
agricultural soil electrical conductivity is higher. Hohhot city, tumed left flag
and togtoh county areas less affected by topography and elevation, and other
areas are greatly influenced by its, Hohhot especially WuChuan County
affected southern and northern Hohhot city is great, as shown in figure 7, as
shown in figure 8.

3.3.2 Exposure of hazard-affected bodies The figure 9, figure 10 shows that
Hohhot city, togtoh county because of the high population density is bigger,

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