What harm will the rainstorm bring?

Rainstorm is a kind of disastrous weather with serious influence. Continuous rainstorm, heavy rainstorm and extremely heavy rainstorm in a certain area will often lead to flash floods, reservoir dam breaks, rivers flooding, houses being washed away, farmland being flooded, traffic and telecommunications being interrupted, which will bring serious harm to the national economy and people's lives and property. There are two main hazards of rainstorm:

1, flood disaster. Due to heavy rain and poor drainage, it is easy to cause waterlogging, and the soil pores are full of water, which leads to the lack of oxygen in the roots of terrestrial plants, inhibits the physiological activities of the roots, strengthens the anaerobic process, produces toxic substances, harms crops and reduces production. ?

2. Flood disaster. Floods caused by heavy rain flooded crops, making it difficult for crops to metabolize normally and causing various injuries. The deeper the flooding, the longer the flooding time and the more serious the harm. Flash floods and river floods caused by heavy rains not only endanger crops, fruit trees, forestry and fisheries, but also destroy farmhouses and industrial and agricultural facilities, and even cause human and animal casualties and serious economic losses.

Extended data:

Season and distribution of rainstorm:

China is a rainy country. Except for some provinces in the northwest, it is almost always heavy rain. Winter rainstorm is limited to the coastal areas of South China, with frequent rainstorm in South China from April to June. From June to July, persistent rainstorms often occur in the middle and lower reaches of the Yangtze River, with long duration, wide range and large amount of rainstorms.

July-August is the main rainstorm season in northern provinces, and the rainstorm intensity is very strong. From August to 65438+ 10, the rain belt gradually withdrew southward. After summer and autumn, the typhoon rainstorm in the East China Sea and the South China Sea is very active, and the point rainfall of typhoon rainstorm is often very large.

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