What is Land Pollution?
Land pollution can be understood as the contamination of land and soil because of the deposition of waste materials, both liquid and solid, on land that affects the soil and groundwater adversely. Land pollution has been readily neglected and demands stronger reactions as water and air pollution.
What Causes Land Pollution?
Generally, the material and liquid wastes that are disposed of on land and water cause the contamination of the land as most of the disposed of wastes are not biodegradable but non-biodegradable and toxic. These waste materials causing land pollution can be categorized into three types- municipal solid waste, construction and demolition waste, and hazardous waste.
Municipal solid waste or municipal refuse: This waste is commonly known as household garbage or trash. It consists of everyday items that are dumped by the public. The garbage waste is collected by the municipality; therefore, the word municipality has been added to its name. This type of solid waste contains food and kitchen waste and paper that is biodegradable; a huge amount of plastic that is non-biodegradable; chemical wastes such as batteries and paints; biomedical wastes such as medicines and other electric and non-combustible wastes.
Construction and demolition waste or C&D material: Construction waste consists of waste materials that are discarded during the construction process or by construction industries. These typically include bricks, cement, nails, electrical wires, shingles, concrete rubbles, wood objects, asphalt, iron, and steel. Demolition waste includes materials that are produced after the demolition of any structure like bridges and apartments.
Hazardous waste: Hazardous wastes are wastes that contain harmful substances that are toxic and pose a threat to the environment. These are primarily in liquid form and consist mainly of chemicals. Some examples include petroleum, carbon, pesticide, and fertilizers.
Agricultural activities: Due to the increase in population, farmers often use fertilizers and pesticides to keep their crops safe from insects, fungi, bacteria, etc. However, these things contain chemicals and their overuse can lead to soil poisoning and contamination.
Overcrowded landfills: Household wastes are recycled by the local recycling units. However, wastes like aluminium, plastics and others become part of landfills that cause land pollution.
Other causes include deforestation, mining, soil erosion, industrialization, poor sewage treatment, etc.
What are the Effects of Land Pollution?
Soil Pollution: Soil pollution is the contamination of the upper layer of the soil. Soil erosion, the use of chemical fertilizers and pesticides, deforestation, and overgrazing is one of the main reasons for soil pollution.
Water Pollution: The toxic waste material and liquids that are discarded on land contaminate water through the sewage system and sludges. The contamination of soil seeps down and causes pollution in the groundwater and destroys the water table. Water pollution is not only affecting us but is also damaging our water ecosystems by killing and poisoning them.
Air Pollution: The waste that does not degrade in the soil, called non-biodegradable waste, is then burned, which causes air pollution because of the toxic substances that are emitted into the air. Air pollution is a major health hazard for humans.
Effects on Human Health: Land pollution can lead to the formation of breeding grounds for rodents, flies, and mosquitoes. These pollute the environment even further and cause dangerous diseases like malaria, dengue, and plague.
Chemical substances like arsenic, mercury, chromium, lead, and ammonia, etc. can contaminate water and flora that grows on land. It poisons animals and humans.
Air pollution that is caused due to land pollution is one of the main reasons for lungs and breathing problems. Water pollution can cause terrible diseases like cholera and diarrhoea.
Effect on Our Environment: Our environment is very badly affected by land pollution. Soil erosion and deforestation caused by soil and land pollution lead to landslides and mudslides. Toxic waste mixing in the water and land affects flora and fauna very adversely. Healthy air is replaced by smoke and soot that only contains harmful substances emitted through industries especially.
The waste also generates a very rotten smell that is impossible to tolerate. Soil pollution is also one of the main causes of the formation of barren land, which is useless and unproductive. All the nutrients in the soil have depleted, and total flora has decayed.
A land full of harmful toxins like lead and mercury makes it very hard to grow organic food items. It becomes very difficult for the children to play outside in such an unhealthy environment.
The effect of land pollution on soil, water, and the air is destroying our various ecosystems and posing a threat to their very existence.
Effect on Climate: There has emerged an imbalance between different ecosystems. They all have been damaged and destroyed at great lengths so much so that it is directly affecting the climate of the planet and, therefore, contributing greatly to increasing global warming. Plants are destroyed, and trees are cut down for industrial and personal uses, and the human population is only increasing manifold day by day. The requirement for oxygen has increased, but the source is depleting faster than ever. The emission of carbon dioxide is soaring so much that it is heating our planet at a tremendous rate.
How to Minimize Land Pollution?
Land pollution is one of the major problems that every country is facing in the current scenario. As far as the causes of pollution are concerned, there is a long list of them. From huge garbage heaps to hazardous chemicals, monoculture farming to overgrazing, every single factor affects the health of our soil.
The land is a God gifted resource to mankind. It forms the basis of our agro-ecosystem and provides food to 95% of the global pollution. Land pollution refers to the depletion of soil quality due to the accumulation of chemicals or by the removal of useful components. Thus, it is a hazard to food security. Additionally, it also aggravates poverty and risks the well being of future generations. Hence, for a sustainable future, it is important to conserve the quality of the soil. Below we have shared some ways to control land pollution.
Efficient Agricultural Practices
Excessive use of chemical insecticides, pesticides and weedicides results in acidification of the soil. Therefore, farmers must use natural fertilizers such as manure and go for natural pest management strategies to secure the quality of the soil. Also, monoculture farming (the practice of growing a single crop) must be avoided as it reduces the level of nutrients present in the soil. In place of that, the crop rotation method must be adopted to maintain the health of the soil.
Avoid Deforestation and Begin Afforestation and Reforestation
Trees help to control soil erosion as they act as an obstacle to wind speed from carrying soil sediments with themselves. Their roots hold the soil particles tightly and prevent them from running off by a rainwater stream. Therefore, we should save our trees and adopt the practice of afforestation and reforestation.
Use Inexhaustible Resources Of Energy
The burning of fossil fuels releases harmful gases like nitrogen, carbon dioxide, etc. From the air, these gases settle down on the topmost layer of the layer, decreasing the soil quality. So, using solar, wind and hydroelectric energy not only improves the quality of soil but also reduces the toxicity level of air.
Proper Waste Management Strategies For Industrial Waste
Due to a lack of waste management facilities, many industries dump their waste in open areas that damage the land. Industrial waste is composed of heavy metals that take several years to decompose. Therefore, industries must appropriately dispose of their trash as per the government norms.
FAQs on Effects of Land Pollution
1. What are Some Diseases that can be Caused by Land Pollution?
Land pollution is one of the biggest environmental problems in present times. Improper waste management, rapid urbanization, and extensive usage of materials that are harmful to the environment are the biggest reasons behind the increasing levels of land pollution every year. As a result, the instances of diseases being caused due to land pollution are also on the rise. Some diseases that can be caused by land pollution are cholera, diarrhoea, cancer, cardiovascular diseases, breathing disorders, birth defects, skin defects and chronic kidney diseases, etc.
2. What are Some Consequences of Land Pollution?
Land pollution in itself is a big environmental disaster, but it, in turn, leads to some serious consequences that have a bearing on living beings at multiple levels. Some of the most severe consequences of land pollution are
Water Pollution: - The chemicals and other toxic material seep into the water sources, thus contaminating them.
Air Pollution: - Pollution in the air is another severe consequence of land pollution as fumes from the waste filling the landfill sites are extremely harmful.
Soil Erosion and Barren Land: - Land pollution also affects agricultural activities by increasing soil erosion and reducing the fertility of the land.
3. What factors contribute to land pollution?
There are many causes of land pollution. Here, we are listing some main contributors.
Litter - It occurs due to improper disposal of waste products. Most of the litter is found on roadways discarded by motorists and pedestrians. Also, a large volume of litter comes from unsecured products thrown by people from a car or any vehicle. All types of litter release some harmful chemicals and microparticles when they degrade. Thus, contributing to land pollution.
Urbanization - When more people reside in a particular area, more trash is produced by people. This trash is not disposed of properly and causes land degradation.
Mining - During mining lots of unwanted products are extracted along with useful products. These unwanted substances are disposed of on land as it is that further releases toxic substances causing pollution.
4. How can we prevent land pollution?
Land pollution can be prevented in the following ways.
Educated people should be aware other people about the concept of reuse, reduce and recycling.
Reusing materials help to decrease the need for harvesting resources.
Decreasing the use of insecticides, weedicides and pesticides in agricultural activities.
Decreasing the dependency on non-biodegradable resources.
Avoid purchasing packaged products as they will lead to garbage disposal problems.
People should avoid littering on the ground.
A dumping ground must be created away from the residential areas for waste management.
Proper waste management education is necessary for people to prevent themselves from diseases.
5. How land pollution leads to groundwater poisoning?
Land pollution plays a major role in increasing the toxicity level of groundwater. When any industrial process takes place, many unwanted materials are released that are further disposed of on land or in illegal landfills or storage. When these unwanted materials degrade, they release toxic chemicals that are injurious to human health. These chemicals dissolve into the water present underground and contaminate it. This water is now unfit for human consumption. It may cause diseases like diarrhoea, cardiovascular diseases, kidney problems, breathing issues, cholera, etc.
