Bush burning is the process of setting a forest vegetation on fire in order to clear a piece for farming or get rid of waste in the environment. Most times, the intentions of the individuals involved in bush burning are good, but they are unaware of the damage caused to the crops, trees and animals in the environment. This is a common act among farmers, as they use this medium to clear their farmlands.
Here’s what we do not know: some plants contain flammable oils that aid burning, so a combination of the plants present in the farmland and the season contributes a great deal to burning the farmland down
Fire is the visible part of a combustion process. A combustion is the chemical reaction of three components: oxygen, fuel and heat. For a fire to start, the three need to be maintained. If the heat and fuel are present but no oxygen, the fire will not last. Likewise, if there is oxygen and heat but no fuel (Charles Baukal, 2013). This goes to show that fire can be contained when there is no source of fuel, heat or air.
Whenever a fire begins, not just humans are affected but animals, too, and lands and properties. A forest consists of an entire ecosystem including various animals, birds, insects and trees. Bush burning often leads to the extinction or migration of these animals.
Speaking of bush burning and wildfire, they also have environmental and health implications which need to be addressed.
Environmental Effects of Bush Burning
Before explaining the environmental and health effects of bush burning, it is important to understand the factors that cause the spread of fire.
Direction of the wind
Slope of the area (fire moves faster uphill than downhill)
Temperature of the location
Times and seasons (During harmattan, the leaves are dry and fire moves at a faster rate)
The foremost environmental effect of bush burning is deforestation. This effect cannot be overemphasized, as it is the trigger for other environmental issues. Deforestation is the removal of trees or the felling of trees (Conserve Energy Future, 2017).
Incineration of refuse in landfill sites releases a black substance which is called soot. This is produced from the incomplete combustion of organic matter. This is another major environmental effect of bush burning which leads to negative effects on human health. Hydrocarbons, carbon-monoxide and nitrogen oxides are a few of the greenhouse gases being emitted.
Other effects are the extinction of wildlife and vegetation, destruction of organic value of the soil, and the loss of habitat for animals. Bush burning increases the emission of greenhouse gases causing climate change and global warming, ultimately depleting the ozone layer, increasing the sun rays on our skin. Particulate matter (PM) is also one of the environmental effects of bush burning, PM 10 in particular is a major effect which leads to adverse health issues.
Health Effects of Bush Burning
1. Significant increase in asthma.
2. Pulmonary inflammation.
4. Increase in sputum production (sputum: mucus and bacteria).
5. Chest tightness.
6. Increased risk of pneumonia and acute bronchitis.
7. High risk of thermal burns or direct flame burns.
8. Heat exhaustion leading to heat stroke.
9. Cardiovascular complications.
The Way Forward
Instead of burning our waste/refuse, it is advisable we get disposable bags to put our waste in. If possible, separate the waste to aid recycling.
Policies need to be implemented to ensure only designated areas are used for deforestation. And afforestation needs to take place.
Waste management agencies need to find alternatives to discarding waste such as the conversion of waste into energy (converting methane gas from manure into electricity).
The government needs to enforce the collection of waste from residential areas to avoid burning of waste in neighborhoods.