Speech on the damage of bush burning
Answers
Answer:
The impact that bush burning has on soil depends largely on the intensity of the fire and how long it burns. Low-intensity bush burning will affect soil conditions, although not to the degree of a fire involving hardwoods. Bush burning can cause the soil to lose its ability to absorb and retain water. After a fire, the top layer of soil may become water repellent. This causes rain to drain off the soil without absorbing into the ground. The more intense the fire, the greater the chance that the top layer of soil will become water repellent. Once fire consumes bushes, their roots no longer pull moisture into the soil. Additionally, the loss of shade that the bushes once provided means soil moisture is more likely to evaporate.
Erosion
Because bush burning may cause the soil to be less stable, erosion is a major concern after a fire. The loss of root systems, coupled with the water runoff caused by soil water repellency, can allow much of the soil to wash away. Shallow-rooted plants are affected by unstable soil, as they depend on vegetation, such as shrubs and bushes, to hold the soil in place.