Formation factors of biological disasters

The causes of biological disasters are natural and human factors.

Natural factors have reduced the stress resistance of ecosystems caused by other disasters, leading to rapid proliferation and spread of pests, such as epidemics after floods. There is also an ecosystem that causes harmful organisms due to climate anomalies. For example, global warming, the number of wintering pests is large, leading to frequent agricultural pests and pests, and the northern pests move northward and expand the scope of harm.

The human factor is mainly caused by human transmission, which causes the scope of biological disasters to expand, such as the spread of human activities. Secondly, environmental pollution caused by human beings, excessive exploitation of resources, and the use of highly toxic and broad-spectrum agents have led to the destruction of ecosystems and the production of biological disasters. Once again, the genetic pollution of genetically modified crops and the use of biological weapons.