The burning of tropical rain forests has caused controversy. What caused the burning?

While the Amazon rainforest is burning, there is another place in the world that is burning fiercely, and that place is the African prairie. I don't know if you know the Angolan prairie in Africa, but there was a fire here recently.

However, unlike the fires in the Amazon rainforest, although there are many fires in the Angolan savanna in Africa, most of them are small-scale agricultural fires, not forest fires.

Forest fire must meet three conditions: all combustible materials (including trees, grass and other plants) are the material basis of forest fire; For fire weather, it is an important condition for fire; Fire source is the dominant factor of forest fire.

There are two main fire sources that cause forest fires: man-made fires and natural fires.

Man-made fire: productive fire sources: fire for agriculture, forestry and animal husbandry, fire for forestry sideline production, fire for industrial and mining transportation production, etc. Non-productive fire sources: such as cooking, cooking, burning paper, heating, etc. ; Intentional arson, burning hay, setting off firecrackers and fireworks, etc.

Among the fires caused by man-made fire sources, forest fires caused by land reclamation and smoking are the most. In the forest fires in China, the fires caused by cooking smoke, burning wasteland and burning paper on graves account for an absolute number.

Forest fires caused by natural fires account for about 1% of the total forest fires in China.

Fire weather means that whether forest fires can occur depends mainly on fire weather when both forest combustibles and fire sources are available. Generally speaking, fire weather is the climatic conditions that are favorable for forest fires, such as high temperature, little precipitation, low relative humidity, strong wind and long-term drought.