1. The grassland fire in Inner Mongolia is characterized by fierce fire. The grassland area is large, the terrain is flat and there are many combustibles. Once a fire breaks out, under the action of strong wind, the fire spreads rapidly and is difficult to control. Soon. Due to the change of grassland wind direction, multi-fork fire heads often appear, which spread rapidly and form an encirclement, making it difficult for people and animals to transfer and easily causing casualties. Seasonality is obvious. Grassland climate and vegetation characteristics determine that spring and autumn are the high incidence seasons of grassland fires. From March to June, the high temperature and windy weather increased, the grassland snow melted, the combustible materials such as hay were exposed, the air was dry, and it was easy to catch fire. In September-11month, the weather gets colder, the rainfall decreases, the grassland vegetation turns yellow, and the sky is dry and dry, which is easy to catch fire.
2. There are three main causes of grassland fires: human factors, natural factors and the spread of wild fire sources. Human factors mainly include car engine fire, cigarette butts littering in the wild, children playing with fire in the no-fire area, wasteland accumulation, production fire burning, local residents dumping fire and rekindling it. Grassland fires caused by human factors account for more than 90% of the total grassland fires in China.
3. Grassland fires are easy to cause deaths and obstacles, and the affected herders are bankrupt, which is easy to burn down important national facilities and grassland protection and construction infrastructure. Grassland fires, which seriously damage the lives and property of the country and people, not only easily cause livestock losses, but also burn herders who live on livestock. After grassland fire which seriously affects animal husbandry production, it is easy to be exposed, easily influenced by strong wind, and the topsoil is lost, which is not conducive to soil and water conservation, and the topsoil organic matter is reduced, which has a negative impact on grassland ecosystem.
There are three main causes of grassland fires: human factors, natural factors and the spread of fires outside the country. Human factors include car engine fire, littering cigarette butts in the wild, children playing with fire, productive fire burning chemical fertilizer, resurrection of local residents' fallen fire, heating and cooking smoke and other domestic fires. In addition, sacrifices such as burning mulberry and paper on the grave were deliberately set on fire by saboteurs.