So why does California have a big fire every year? Why didn't you let it out for months?
Unique climate-California, Forshill is located in the eastern Pacific Ocean and the west coast of the United States. There is a famous mountain range here-the Rocky Mountains, which runs through California from north to south, just passing through the passage of warm and humid air from the Pacific Ocean to the inland of the United States. The humidity of warm and humid air decreases continuously when climbing the windward slope of the mountain, and it becomes dry and hot air when climbing to the top of the mountain, which is called wind-burning.
Where the scorching wind passes, it takes away all the moisture in the dead trees, ground and air in the forest, making the whole forest hot and dry. At this time, just a little spark can ignite the forest. The fire was caused by "lava" in Siskiyou County, which set fire to the forest and then got out of hand.
Save lives and put out fires. In China, few people will move to the wild by themselves or their families. However, many local people in California like to live alone. They moved their homes farther away from the city and closer to the forest, and some even lived directly in the forest.
In case of forest fire, rescuers should save people at the first time, and these people live in very scattered places, which further consumes valuable time. By the time the personnel were evacuated, the best time to put out the fire had already been missed.
The destruction of forests by human activities is also an important reason for frequent mountain fires in California. According to American statistics, after years of exploitation and destruction, the large-diameter trees in California forests have decreased by nearly 50%. The reduction of big trees reduces the ability of forests to maintain water resources, thus losing the ability to adjust the environment on a large scale and being unable to resist wind burning.
The arid natural environment in California is different from the rainy summer climate in East Asia. The rainy season in California is in winter every year, and most of the precipitation is stored in the form of snow on the top of tall mountains. Therefore, in this economically developed area of California, the most important water source is actually meltwater, and all reservoirs in the state rely on meltwater for water supply.
In recent years, the global climate is warming, and the snowfall in California in winter is greatly reduced, resulting in less and less meltwater. Only two reservoirs in the state have reached 60% storage capacity. However, in such an arid area, the water consumption of local residents is amazing, and the average water consumption of a single family is close to three times that of Shanghai families.
A lot of water resources are wasted, which makes California unable to find enough water in the fire fighting process, which indirectly affects the fire fighting progress.
What if the California government cuts down a series of magical operation trees? Plant it. But don't forget, this is arid California, and trees suitable for growing in arid areas are usually more flammable, such as pine trees. Moreover, the newly planted trees need a certain period of time to grow, during which the vitality is not as tenacious as that of the trees that originally grew here, but the windy weather in California comes every year.
So a magical phenomenon appeared. When the hurricane came, all the trees planted by the California government the year before last were burned. Isn't this an act of adding fuel to the fire?
Global Warming This year, there have been many climate anomalies around the world, and California is no exception. This summer, California even experienced a high temperature of 54.4 degrees Celsius, further fueling the momentum of mountain fires.
The hot weather aggravated the evaporation of water. According to the firefighters involved in the fire fighting, the sprayed water sometimes just evaporates in the air, and it is impossible to put out the fire at all.
In addition, such high temperature weather exceeds the tolerance limit of human beings, so firefighters can't participate in fire fighting at all during the day, and they can only start working after the temperature drops at night, which greatly reduces the efficiency of fire fighting and leads to the delay of fire fighting.
In fact, mountain fires like California are part of the natural cycle. The big trees in the forest have a strong ability to absorb nutrients, and they are very high, which will block the sunshine of other plants and make them unable to grow. Mountain fires will destroy some big trees, so every time after a mountain fire, some new plants will appear in the burned place, and they will come back to life soon.
However, the recent frequent extreme weather has made mountain fires out of control and completely become the destroyer of forests. The large amount of carbon dioxide produced by the fire aggravated the greenhouse effect of the earth. The raging fire also warns mankind that it is urgent to protect the environment.