What are the causes of wildfires raging on the west coast of the United States?

In 2020, the temperature on the west coast of California and even in the United States was extremely high in August. For example, August in California became the hottest August on record. In addition to high temperature, there is also a dry climate, and some places have even reached the point of "severe drought".

In addition, the thunderstorm weather in California this year is particularly fierce. For example, in August in San Francisco, there were thunderstorms around, and more than 65438+ 100000 were struck by lightning, causing more than 300 fires. Three mountain fires near San Francisco, California were all caused by lightning.

2. Human factors

On the one hand, in fact, many people's activities in the wild may inadvertently lead to mountain fires. Many roads in America are close to forests. If the driver throws away cigarette butts, it may cause a fire. In addition, many young people in California may set off fireworks in the sky during the party, and Mars may also land on dry and flammable plants, which will eventually lead to mountain fires.

On the other hand, more and more residents in California move to the suburbs. In order to ensure the smooth progress of current political services, such as electricity services, more and more people need to cross the forest. If there is a problem with power equipment, it is likely to cause a fire.

3. Natural causes

100 years, the California Fire Department has actually been trying to curb the occurrence of mountain fires. However, mountain fires are actually a natural phenomenon. As the time without mountain fires becomes longer, more and more dead plants will dry up and accumulate on the mountains, forming flammable substances. Therefore, once Mars appears, it is more likely to become a large-scale mountain fire.

Extended data:

Mountain fires in recent years

1, 20 19 Liangshan fire in China and Sichuan.

On March 30th, 2065438, a forest fire broke out in Li Er Village, Yalongjiang Town, Muli County, Liangshan Prefecture, Sichuan Province. The fire point is about 3800 meters above sea level, with complex terrain, steep slope and deep valley, and inconvenient transportation and communication. As of 05: 00 on April 4, 20 19, it has been confirmed that 3 1 person was killed in this forest fire. On April 5, the fire was confirmed as a lightning strike, and the whole fire was completely controlled, with no danger of spreading. The total burned area of the fire site is about 20 hectares. After the judgment of the front command, it was decided to cancel the number. On April 7th, Muli fire broke out again in Liangshan, Sichuan, and forest fires broke out in Yuexi County and Mianning County.

2.20 19 Australian mountain fires

On July 20 19, a serious forest fire broke out in Australia. High temperature and drought are the main reasons why forest fires have been raging for months. By February 4, 2020, forest fires have killed 33 people and burned more than 3,000 houses. On February 20th, 2020, Australian Prime Minister Morrison announced that a royal committee would be set up to conduct the highest-level investigation on this forest fire [4]. By July 28th, 2020, the jungle fires in Australia may have killed 3 billion animals.

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