Fortune Telling Collection - Comprehensive fortune-telling - The rainstorm in Henan touched people's hearts. Why is the rainstorm in the Central Plains so harmful?
The rainstorm in Henan touched people's hearts. Why is the rainstorm in the Central Plains so harmful?
First, Henan belongs to the plain area, and it can't flow instantly after accumulating water. There are few mountains in Henan, most of which are plains, and the whole land drop is only 2-3 meters. As we all know, "water flows downwards", but in these places in the Central Plains, it can't flow far. Therefore, if the precipitation exceeds the absorption, the flood can flood the whole village and even the whole county. This is not that the urban drainage system is not good, but that the whole terrain is like this and cannot be changed.
Second, the Yellow River in Henan Province is an overground river, so it can't discharge water. Let's talk about the Yellow River. If the water level of the Yellow River is extremely low, it may not have any impact, but as long as the water level of the Yellow River rises, its water level will be higher than that of most cities and counties. If it breaks through the bank, it will fall into Wang Ze's land.
However, in mountainous areas, most rivers are at the foot of the mountain. If they are flooded, they can move to a higher place. They are not afraid of burst banks or floods, because floods usually recede after three to five days. This is why many Central Plains areas have the saying of "flood storage and detention areas", but Yunnan, Guichuan, Guangdong, Guangxi and Fujian have no such saying.
Third, the population is large, the density is high, and the area that needs rescue is wide. Let's talk about population density first. The Central Plains has been the focus of development since ancient times, so the population is larger than most areas. Now the disaster is in a populous province, so the number of people who need help is naturally more and more serious.
For example, compared with the floods in Henan and Guangxi, even the TV stopped broadcasting, because everyone is used to the annual floods, and the local people are very familiar with how to make plans, how to clean up and when to clean up after the disaster. However, in the Central Plains, there will be severe drought, and it will take decades before there will be floods. This lack of preparation is the main reason for the serious disaster.
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