What is the relationship between forest fires and the impact of the season?

Forest fires are terrible disasters, and after forest fires, everything is often reduced to ashes and no grass grows. However, forest fires actually have a very big relationship with the season, and under normal circumstances, the high incidence time of forest fires is autumn and winter, and the reason for this situation is actually very simple. First of all, in autumn and winter, the leaves begin to turn yellow and dry up, and at the same time fall, becoming very easy to burn.

The second is that autumn and winter are often accompanied by very strong winds, as the so-called wind fuels fire, which is easy to burn and not easy to extinguish. Finally, the precipitation in autumn and winter is often very small, basically there is rarely a large amount of precipitation, although the continuous autumn rain has a preventive effect on deep forest fires, but if the fire has been formed, often the autumn rain does not have a big effect. <>

First of all, in autumn and winter, the leaves begin to turn yellow and dry up, and at the same time fall, becoming very easy to burn. Moreover, forest fires are different from other urban fires, and they cannot be effectively controlled by fire hoses. The best way to do this is to control it by making flame retardant tapes that remove the combustibles around the wildfire and allow it to extinguish naturally.

Or by setting fire to the opposite line of defense, so that the two flames are extinguished due to lack of oxygen. So when a forest fire occurs, the consequences are often very devastating. <>

The second is that autumn and winter are often accompanied by very strong winds, as the so-called wind fuels fire, which is easy to burn and not easy to extinguish. Moreover, the biggest danger of the wind is not that the mountain fire is easy to extinguish, but that after the spark is carried by the wind, it is very likely to fly to other places, resulting in a large fire behind this firefighter and surrounding the firefighters. <>

Finally, the precipitation in autumn and winter is often very small, basically there is rarely a large amount of precipitation, although the continuous autumn rain has a preventive effect on deep forest fires, but if the fire has been formed, often the autumn rain does not have a big effect. In fact, an unfinished mineral water bottle, a glasses, and a cigarette butt that has not been completely extinguished may cause a terrifying mountain fire, so the best way to deal with a cold fire is to prevent it.

In order to strengthen the prevention and control of forest fires, forest rangers should also pay attention to studying the changes in the seasons, summarizing the rules, preventing the occurrence of fires in a timely manner, and eliminating fire hazards. In the season when forest fires are prone to occur, it is necessary to intensify the management of forest protection and all employees to engage in forest fire prevention work. The impact of wind on the occurrence and development of forest fires.

It can be said that wind has the greatest impact on the occurrence and development of forest fires. Wind power can not only divide the efficiency and reduce the humidity in the forest, enhance the evaporation of water from combustible substances, and increase the possibility of fire, but also help the fire to expand after the fire, so that the small fire can expand to the large fire, accelerate the spread of the fire, and cause the difficulty of extinguishing the fire. For fires that have already been extinguished, if they encounter strong winds, they may also cause the remains of the embers to recur and the forest fire to recur.

When the dry leaves, weeds, marshes and other ground cover in the forest catch fire, the flame is blown by the wind and spreads rapidly with the direction of the wind. If the wind speed is particularly fast at that time, the burning dead branches and fallen leaves or the branches with fire in the canopy can be swept into flying fire, which can drift over valleys, rivers, fire lines, roads and other obstacles with the wind, becoming a new source of fire and making the fire more extensive.

The climate greatly influences forest fires, especially in winter, when the northern mountain forests are drier and easier, and are relatively worse in summer and autumn.

Personally, I think that forest fires are also very closely related to some factors of climate, especially in summer, when the surface temperature begins to rise, and then it is particularly easy to cause forest fires.

The climate is dry in autumn and winter, and there are many combustibles such as branches and leaves. In the event of a fire, rangers will moderately burn the litter in the fall and winter to reduce the likelihood of a fire. In spring and autumn, due to the dryness and lack of rain in spring and autumn, coupled with the strong wind in spring and autumn in the Daxing'an Mountains, most of the forest species are conifers, and a few broad-leaved trees are extremely flammable.

Winter, dry winter is the season of fires. No rain is dry, and human negligence is the cause.

In the Middle West it is summer and autumn, especially in California. It is the Great Khing'an Mountains forest fires all year round, mainly in spring. The reason is that the snow in this area has melted in the spring, there is little precipitation, the wind is strong, the trees are dry, the temperature rises, and fires are prone to occur.

Another dangerous time is autumn, before the snowfall. In the north of our country, the fire prevention period is spring and autumn, and there is only one fire prevention period in the central and southwest regions of our country in spring, and in the northwest of our country, the annual fire prevention period is July 15 and September 15, and the key period is August.

The southeast coast of China has a long fire prevention period, and there is no obvious critical period for fire prevention. The main measures to prevent forest fires. Establish and improve forest fire prevention organizations.

The regulations on forest fire prevention stipulate that the forest fire prevention work shall implement the responsibility system of the people's administrative leadership at all levels, and organize relevant departments to set up forest fire prevention headquarters. Comprehensive management of forest fires. On the basis of the forest fire prevention regulations, we should focus on grasping the grassroots and the foundation, take specific measures as the breakthrough point, and thoroughly implement prevention.

Actively eliminate the forest fire prevention policy, and constantly reform and innovate. Establish a new forest fire prevention mechanism based on the grassroots, laying the foundation, fighting for the countryside and the village, preventing and governing the masses, and self-prevention and self-help. The main contents are as follows.

Strengthen publicity and education. Strengthen the management of outdoor fire sources and accelerate the construction of fire protection projects. Strengthen the construction of forest fire prevention teams.

Strengthen command and dispatch. Strengthen supervision and inspection. Post-treatment of forest fires.

When the temperature is high or the humidity is low. For example, mid-summer and the recent ongoing drought. High winds and autumn foliage are also important factors.

Forest fires are basically more frequent in the autumn season, because autumn is a season like autumn, the weather is very cool, this time is especially easy to catch fire, this time the wood is very dry, so it is particularly easy to catch fire.

The seasons when forest fires are more frequent are autumn, winter, and spring, because these seasons are the driest in climate. Especially in autumn and spring, when the weather is less rainy and dry, the incidence of forest fires is higher. If you count by date, then forest fires are most frequent from October to May.

Forest fires usually occur in winter, which is prone to forest fires because the winter climate is very dry.

1. Fire source management is difficult to control, and residents in forest areas with weak awareness of fire prevention are engaged in farming, burning wasteland, burning waste, burning paper and incense, heating and lighting in the forest, littering cigarette butts and other bad fire behaviors can cause forest fires.

2. Natural factors are difficult to foreseeIn recent years, with the process of industrialization, carbon emissions have increased, making the climate worse, continuous drought or high temperature, and high fire danger weather has become more and more frequent.

The main reasons for the frequent occurrence of forest fires are the accumulation of dead branches and leaves, and the increase of combustibles.

3. It is difficult to foresee forest fires in forest areas, such as complex topography and landform, a wide variety of tree species and diversity of growth structures, so forest fires in forest areas are generally sudden.

With the characteristics of wide area, rapid spread, and poor disposal, forest fires usually cannot be found in time, which brings great difficulties to the prevention of forest fires.

4. Fire prevention propaganda is not in place, responsibility is not in place For a long time, many places have neglected fire prevention publicity, and the responsibility has not been implemented for a long time.

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What are the main causes of forest fires?

There are two main types of fire sources that cause forest burning, namely natural fire sources and man-made fire sources.

There are three conditions for a forest fire to occur: combustibles (i.e. trees), fire danger weather and fire source. Without one of the three conditions, there will be no fire.

1. Natural fire source.

Natural fire sources mainly include: lightning fire, wintering fire, volcanic eruption, etc. The natural ignition source that causes forest fires in some areas of our country is mainly lightning fire, but it rarely occurs.

2. Man-made fire source.

Anthropogenic ignition sources are divided into two types: productive ignition sources and non-productive ignition sources. Productive fire sources include clearing land and burning miscellaneous materials, burning ash and manure, smelting and afforestation, burning ridges and grasses, burning kilns, burning isolation belts, quarrying and firing guns, and throwing tiles by trains. Non-productive sources of fire include smoking in the wild, heating and cooking, burning incense and paper on graves, burning mountains to drive away animals, children or mentally handicapped people playing with fire, intentional arson, etc.

The main fire source causing forest fires in some areas of China is man-made fire sources, accounting for more than 99% of the total number of forest fires. Among them, productive ignition sources accounted for and non-productive ignition sources accounted for them. The main sources of productive fire are burning ridge grass, clearing land and burning miscellaneous materials, burning ash and fertilizer, mountain refining and afforestation, etc. The main sources of non-productive fire are smoking in the wild, heating and cooking, burning incense and burning paper in graves.

Among the 24 types of fire sources that caused forest fires, the burning of ridge grass was the most prominent, accounting for the total number of forest fires in the year. The second is to open up the wasteland and burn miscellaneous and smoke in the wild, respectively, and burn ash and manure and mountain refining and afforestation, respectively.

Forest fire prevention is the meaning of forest fire prevention. There are two main types of causes of forest fires: man-made fires and natural fires

1. Man-made fire includes the following:

1) Productive fire sources: fire for agriculture, forestry and animal husbandry, fire for forestry and sideline production, fire for industrial and mining transportation production, etc.

2) Non-productive fire sources: such as outdoor cooking smoke, cooking, paper burning, heating, etc.

3) Intentional arson: burning hay, setting off firecrackers, etc.

Among the fires caused by man-made fires, forest fires caused by reclamation and burning and smoking are the most common. Among the forest fires in our country, fires caused by cooking smoke, burning wasteland and burning paper on graves account for the absolute number.

2. Natural fire: including lightning fire, spontaneous combustion, etc. Forest fires caused by natural fires account for about 1% of the total number of forest fires in China.