Why do we call drought a drought? What impact will drought have on humans?

In fact, the drought we often talk about is a drought caused by abnormal weather. It is because there is a serious lack of moisture in the soil and the water balance of crops is destroyed, resulting in a reduction in crop yields. This can cause a series of food problems, even famine, and may also cause animals and plants to suffer from water shortage, although it indirectly leads to death.

However, it is possible that locusts will emerge after a drought, which will aggravate the hunger caused by the drought and may even cause social unrest.

Due to insufficient water, long-term animal husbandry cannot achieve the growth of organisms, resulting in a large reduction in production or the loss of production. This is a relatively common natural disaster, which will not only affect agriculture, but also affect the ecological environment of industrial cities.

The formation of droughts is generally related to the local climate, and even the precipitation in some places is less than 250 mm. This kind of area has become an arid area. If the precipitation is between 250 and 500 mm, it is called a semi-arid area.

Arid areas in the world account for about 25% of the land area, most of which are in the Sahara Desert, western North America and northwest China.

If the snow melts less, drought conditions will also occur. Most areas of our country belong to the Asian monsoon climate, and the amount of precipitation may be affected to a certain extent by the land and sea distribution topography, and it varies between regions and seasons. There will also be imbalances between them.

In the area north of the Huaihe River in the Qinling Mountains, droughts will occur in spring, while droughts may occur in the Huang-Huaihai area in spring, summer and autumn, which is the area with the largest drought-stricken area in my country.

Sometimes eastern Africa suffers from severe drought due to insufficient rain, which even causes all crops to die and no harvests are harvested. A large number of livestock also died due to lack of water, causing serious losses to local humans and even causing a direct decline in the local economy.

Nature has suffered many disasters caused by drought, and many measures have been taken to prevent droughts around the world. For example, some areas will develop agricultural irrigation projects, which may change the varieties of crops.

In this way, choosing some drought-tolerant varieties can make full use of the limited precipitation, allowing plants to grow adequately.

Some areas have also begun planting trees to improve climate conditions and reduce water evaporation. At the same time, modern technology and water-saving measures are also used, including artificial rainfall and plastic film covering, and even using groundwater and even seawater. These measures are all aimed at preventing drought and reducing all losses to humans.