What caused the drought directly?

We know that the most direct cause of drought is the influence of weather and climate. Long-term lack of rainfall and dry climate will directly lead to human beings facing drought disasters. In addition, drought is closely related to other factors. For example, geographical location and altitude, the distance between major water systems, the sliding and drifting of crustal plates, and the degree of local vegetation coverage are all related.

Drought is the first hazard of agricultural production, which will also lead to the decline of human immunity. Meteorological conditions will affect the distribution, growth, yield and quality of crops, and water condition is the main condition to determine the type of agricultural development. Drought has become the number one killer affecting China's agricultural production because of its high frequency, long duration, wide range of influence and great delay.