Bad weather often happens. What's the difference between a flood in Shanxi and a rainstorm in Henan?

The rainfall map of 202 1 seems to be upside down. Guangdong, Hunan, Jiangxi and Hubei, which are traditionally prone to floods, have not experienced large-scale floods this year. On the contrary, northern provinces such as Henan, Shaanxi and Shanxi, which are often in a state of drought, have successively staged floods. We have to sigh that climate warming has a great impact on extreme weather. Although they are all floods, there is still a big difference between the floods in Shanxi and those in Henan in July, which is reflected in the attributes of the affected areas and the affected areas.

Let's start with the nature of the affected areas. In July, the area most affected by heavy rain in Henan was the city. Although the short-term rainfall of the rainstorm exceeded that of Shanxi at that time, the scale of the rainstorm was not large, so Zhengzhou and Xinxiang were mainly affected. Affected by extreme rainstorm, subways and hospitals in Zhengzhou city were flooded, and a large number of private cars were flooded, which basically paralyzed the city's traffic.

This is equivalent to directly cutting off the basic operation of the city. In short, the impact of the rainstorm in Zhengzhou is "small area and expensive loss". On the other hand, this flood disaster in Shanxi is more similar to the traditional flood disaster in the south. The main disasters are floodplain, basic farmland and village houses. Many dams have collapsed, bridges have broken, mudslides and so on. If we have to define the nature of floods, then the disasters in Shanxi will tend to be common this time.

From the perspective of the affected area, although the short-term rainfall in Shanxi is not as large as that in Henan, it lasts longer and has a larger impact scale. Therefore, the affected area of Shanxi is much larger than that of Henan, and the whole province 1 1 city is basically affected, with a total of 76 counties (cities, districts) 1757438+0 million people affected.

In addition, the basic topography of Shanxi and Henan is also different. Shanxi belongs to plateau topography, and there are many surrounding basins in the territory, so floods in Shanxi are accompanied by more farmland damage. According to rough statistics, 3.6 million mu of crops are damaged. The farther north the latitude of Shanxi, the drier the climate, and the lower the waterlogging bearing capacity of plateau soil. Therefore, in the face of large-scale heavy rain, it is also easy to cause mudslides. By comprehensive comparison, the flood disaster loss in Shanxi in July was higher than that in Henan.