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imagem de vegetação incediada e bombeiro em ação com jato de água

Fires in Brazil

9/3/24

In Brazil there is a large number of fires, mainly in the Amazon and Cerrado biomes. Some factors have aggravated this scenario, such as global warming and deforestation.

A study by the NGO MapBiomas looked at more than 150,000 satellite images with data on fires between 1985 and 2020. The study brings worrying results: added together, the burned area in Brazil corresponds to almost 20% of the entire national territory. The Cerrado and the Amazon rainforest concentrate most of the area affected by fire, 65% of which is native vegetation.
 

What is a fire?

There are two types of fires: natural and man-made. Learn more about each type: 

Natural fires
Wildfires are natural phenomena that generally occur in dry areas with arid or semi-arid climates. Because of the wind and low humidity, it is common for sparks to appear naturally, causing fires that can reach large proportions.

Anthropogenic burning
There are also anthropogenic fires, i.e. those started deliberately by human beings, for various purposes, such as clearing vegetation or preparing the soil for agriculture or livestock farming.​

Human burning can be considered a crime and environmental laws prohibit it: 

  • Within 15 meters of the limits of the safety strip of electricity transmission and distribution lines. 

  • In a 100-meter strip, around the domain area of an electricity substation.  

  • In a 50-meter strip, around the areas of environmental conservation units.

  • In a strip of 15 meters on either side of state and federal highways and railroads.  

  • All burning must be authorized by the municipal and/or state environmental agency.  

What can be done to combat fires?

The best solution to prevent fires is prevention. It is everyone's duty to raise public awareness by intensively demanding that institutions control and combat illegal fires. Talking to children about the dangers of playing with fire can also be effective in avoiding accidents in the future.

In everyday life, avoid disposing of cigarette butts in areas of dry vegetation. 

Don't burn or throw garbage near plantations, forests or sugar cane fields, or even in private areas, as sparks carried by the wind can generate new outbreaks of fire.  Separate garbage and wait for it to be collected, with the support of the municipal collection system. If there is no collection in the area, contact the town hall or community associations.

Avoid planting near the electricity grid. Give priority to mechanized harvesting when possible. Always clean up plantation/pasture areas, eliminating easily combustible materials.

Make firebreaks (strips along fences free of vegetation on the ground surface) with a harrow and/or hoe so that the fire doesn't spread to other places. This technique is low cost and very effective.  

Do not burn under or near the electricity grid. It is a crime to burn in these areas. 

In the event of fire outbreaks or fires, call the competent authorities, such as the Fire Brigade on 193 and the Military Police on 190.  

In the event of reports of arson, call Ibama (Green Line): 0800 061 8080.

What if the fire occurs near the power grid?

Heat and soot make the air capable of conducting an electric current between the mains and the ground or between the wires. This causes the grid to shut down and the power to go out.  

Power outages occur not only in the region of the fire, but also in many others. It can affect schools, banks, stores, hospitals and many other institutions.  Students are left without classes; the sick are left without care in hospitals; workers are left without jobs; residents and local businesses are left without power. Everyone suffers from the lack of energy that can be caused by fires. 

Power lines can also deteriorate faster in the heat and broken wires can hit people who are close to the plantations, causing fatal accidents. You need to be vigilant for your own safety!

If a fire breaks out in the electrical network, it should not be extinguished with water. The safest course of action is to call the Fire Brigade on 193 and contact the energy distributor in your state.

What are the causes of fires? 

The Food and Agriculture Organization of the United Nations recognizes the main causes of fires: 

  • Arsonists: fires set by people on other people's property for no specific reason; 

  • Smokers: fires caused by people disposing of cigarettes incorrectly;

  • Clearing fires: these are usually carried out by farmers and ranchers in pasture or agricultural areas to renew the soil and introduce mineral salts released by the practice;

  • Country fires: caused by people camping or in the countryside carrying out some activity and making a fire, which can spread;

  •  Forestry operations: fires caused by workers in the forest, who use fire for some purpose, such as signaling or preparing food;

  • Railroads: fires caused directly or indirectly by activities on railroads; 

  • Lightning: electrical discharges can cause direct or indirect fires in nature or in pasture areas; 

  •  Miscellaneous: fires that do not fit into the previous groups; fires that occur rarely or uncommonly.   

What are the consequences of burning? 

The consequences of fires are generally harmful to both the environment and human health. Imagine that a forest is completely destroyed by fire. Directly, the fire will cause environmental destruction of the entire area, losing all wildlife and natural wealth. 

Indirectly, fires also emit large quantities of polluting gases and smoke that are bad for your health when inhaled, causing respiratory diseases such as bronchitis, sinusitis and rhinitis. Everyone is exposed to this problem, as the winds carry the smoke many kilometers away, affecting the entire population of the planet.

This emission of gases and smoke also affects the environment and contributes to global warming and the greenhouse effect. These gases increase the temperature of planet Earth, causing various negative effects, such as an imbalance in the water cycle, with a lack of rainfall in various regions of the world and rising ocean levels due to the melting of the polar ice caps. 

Why are there so many fires in Brazil?

There is a large number of fires in Brazil, mainly in the Amazon and Cerrado biomes. Some factors have led to an increase in fires in Brazil, such as the advance of deforestation and the expansion of pasture areas and economic activities linked to agriculture

Another factor influencing the spread of wildfires across Brazil is the dry, hot weather experienced in many parts of the country between August and September. 

Most of the time, these fires are caused by criminal human action. Fires are often started by farmers in pasture areas, to renew pastures, and by groups that cause deforestation to eliminate undergrowth and remove wood for sale. 

According to the National Institute for Space Research (INPE), all six Brazilian biomes have suffered from these actions, but the Amazon, Pantanal and Cerrado are the ones that have suffered the most from fires. 

How can Brazil's fires be controlled?

The National Institute for Space Research (INPE) and the Ministry of the Environment are the institutions responsible for monitoring and controlling fires in the country. The Ministry is mainly responsible for drawing up action plans to combat fires and financing equipment and aircraft for control. 

As a means of prevention, Inpe has satellites that analyze large areas, notifying us in real time when a region is experiencing very high temperatures.

To control a fire, two practices are most common: the use of firefighters, people trained to fight the blaze with safety and fire control equipment; and the use of airplanes with water, pouring it on the areas affected by the fire.

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