What Is Soil Pollution?

Filed Under (Soil Pollution) by admin on 10-06-2010

Soil pollution comprises the toxic waste of soils with resources, mostly chemicals that are out of place or are present at concentrations advanced than normal which may have unpleasant effects on humans or other organisms. However, soil pollution is also caused by resources other than the undeviating addition of man-made chemicals such as undeveloped runoff waters, industrial waste materials, acidic precipitates, and radioactive clash.

Both organic and inorganic contaminants are imperative in soil. Soil pollution is caused by the presence of synthetic chemicals or other modification in the natural soil background. This type of contamination normally arises from the split of underground storage links, use of pesticides, and percolation of polluted surface water to subsurface strata, oil and fuel dumping, leaching of wastes from landfills or direct discharge of industrial wastes to the soil. The most common chemicals involved are petroleum hydrocarbons, solvents, pesticides, lead and other heavy metals. This episode of this incident is linked with the degree of industrialization and intensities of chemical treatment.

Soil pollution can lead to water pollution if poisonous chemicals percolate into groundwater, or if contaminated overflow reaches streams, lakes, or oceans. Soil also naturally contributes to air pollution by releasing likely to explode compounds into the atmosphere. The decay of untreated materials in soil can release sulfur dioxide and other sulfur compounds, causing acid rain. Heavy metals and other potentially toxic elements are the most grave soil pollutants in sewage. Sewage mud contains heavy metals and, if functional over and over again or in large amounts, the treated soil may build up heavy metals and as a result become not capable to even support plant life.

In accumulation, chemicals that are not water soluble contaminate plants that grow on polluted soils. The greater than ever pollution of the atmosphere has been one of the greatest concerns for science and the universal public in the last fifty years. The brisk industrialization of agriculture, spreading out of the chemical industry, and the need to generate cheap forms of energy has caused the constant release of man-made organic chemicals into natural ecosystems. As a result, the atmosphere, bodies of water, and many soil environments have become contaminated by a large variety of toxic compounds. These include the hazard of acute toxicity, genetic changes, birth defects for humans and other organisms. Some of these artificial toxic compounds are also dead set against to substantial, chemical, or biological dreadful conditions and thus be a symbol of an ecological burden of considerable amount.

Effects Of Soil Pollution

Filed Under (Soil Pollution) by admin on 03-06-2010

Soil Pollution was in the beginning defined as the pollution of soil system where by noteworthy quantities of chemical or other substances, resulted in the turn down of its fertility or output with respect to the yield of crops. Soil pollution differs from water and air pollution, because the contaminants remain in direct contact with the soil for comparatively longer periods and hence change the chemical and genetic properties of soil. The harmful chemicals can also enter the human food chain from land or water plants.

The major sources of pollution of soil include mining, mud, fertilizers, pesticides, composted town refuse etc. Fly ash generated from thermal power plants, industrial wastes dumped into surrounding land, mining wastes, non-biodegradable organic pollutants, and industrial sludge’s etc are the reasons which cause soil pollution. Commercial and domestic urban wastes consisting of dried sewage sludge as well as trash and debris materials such as plastics, metal cans, glasses, street sweepings, waste paper, fibers, rubber etc contribute to soil pollution.

Effects of Soil Pollutants

Different types of soil pollutants have different effect on the nature of soil. Now let’s look into the effect caused by each of these pollutants.

a) Synthetic fertilizers: Excess use of fertilizers destroys the microbial plant life in the soil, thus leading to disturbance of essential processes in soil such as nitrogen fixation.

b) Pesticides are often used to keep away pests which damage the crops produced and often cause soil pollution as they are mostly non environmental. They take many years to degrade and remain as toxic remains in soil. They may also enter marine environment through run off after rain and enter the food chain.

c) Industrial effluents: Solid, liquid and gaseous pollutants from thermal power plants, paper, fertilizer, iron, and steel industry often end up in the soil and cause dreadful conditions of soil due to their toxicity.

d) Urban wastes: wastes generated in urban living areas such as sewage mud, garbage, hospital wastes, plastic bags etc also are a major cause of soil pollution. These wastes tend to build up in soil, support the growth of pathogenic life form and cause diseases. Waste material like plastic tends to remain non biodegradable in soil and affect soil yield.

Effective treatment of household wastes and modern methods of sewage throwing away if implemented, soil pollution can be taken care of. Formulation of rigorous pollution control legislation and its efficient realization is also essential and imparting public awareness programmes to educate people regarding the health hazards of pollution is a must to control soil pollution.

Effects Of Soil Erosion On The Environment

Filed Under (Soil Pollution) by admin on 03-06-2010

Loss of soil from land owing to the personal property of water and wind currents is called soil erosion. It is a natural process that transports soil from one location to another. In natural conditions, this progression takes place in a slow and continuing manner. Due to human being impact the rate of soil erosion is considerably accelerated. Some of the issues that speed up the process of soil erosion are deforestation, over grazing and improper or in excess amount of farming practices.

When soil erosion happens very slowly but surely it has negligible effect on the land as an adequate amount of time is on hand for to substitute with new soil. But accelerated erosion leads to unfavorable special effects and decreases soil fertility as it diminishes the amount of nutrients. Decrease in soil fertility due to wearing away leads to decrease in the output of crop and also excellence of crops grown.

Eroding land can show the way to accidents and when soil that shifts and gets accumulated on roads and streets can block the driving. These effects are common in sloppy and mountain regions. Soil erosion can reason great damage to environment as greater than before loss of soil can have an effect on the growth of natural vegetation and in turn this leads to transfer of fertile land into a desert.

Soil erosion leads to confirmation of remains by water currents in water bodies like ponds, which can hurt marine plant and animal life. The soil sediments can cover up fish eggs present in ponds and prevent their hatching. Due to erosion soil particles stay on the edge in water and prevent light from reaching marine plants and have an effect on the process of photosynthesis. Due to gigantic amount of suspended soil particles in water it retains the heat and raises the water temperature, which affects the living organisms.

Another major shock from the agricultural chemicals that often move with worn residue is that these chemicals move into, and pollute, downstream watercourses and water bodies. Where inputs of agricultural chemicals are high – as in the more wealthy nations – costs of removing such pollutants from drinking water can be extensive.

The harmful effects of erosion, in terms of decreased agricultural yields, are well known in the developing countries. In erosion-prone areas of the more well-off countries, productivity may be maintained in the short to medium term by increased fertilizer input. The effects of erosion are thus rarely recognized by farmers in richer countries. This approach is however infeasible with regard to erosion in developing countries.

Causes Of Soil Pollution

Filed Under (Soil Pollution) by admin on 01-06-2010

Soil pollution is caused by the existence of man-made chemicals or additional variation in the usual soil environment. This type of infectivity characteristically arises from the rupture of alternative storage links, application of pesticides, and percolation of contaminated surface water to subsurface strata, oil and fuel throwing away, leakage of wastes from landfills or nonstop discharge of industrial wastes to the soil.

A soil pollutant is any feature which deteriorates the excellence, stability and mineral substance of the soil or which disturbs the organic sense of balance of the organisms in the soil. Pollution in soil is coupled with factors such as:

Haphazard use of fertilizers

Soil nutrients are vital for plant growth and development. Fertilizers pollute the soil with impurities. The over use of fertilizers reduce quantity of vegetables and crops grown on soil over the Years. It also reduces the protein content of wheat, maize, etc., grown on that soil. The carbohydrate quality of such crops also gets tainted. Surplus potassium at ease in soil decreases Vitamin C in vegetables and fruits. The vegetables and fruits grown on over fertilized

Use of pesticides, insecticides and herbicides

To kill useless insects living on crops farmers use pesticides. Pesticides not only bring toxic effect on human and animals but also drop off the fertility of the soil.

Dumping of solid wastes

In broad-spectrum, solid waste includes trash, domestic refuse and not needed solid materials such as those from commercial, industrial and agricultural operations. Since a considerable amount of urban solid throw away tends to be paper and food waste, the majority is recyclable or biodegradable in landfills. I the same way, most agricultural waste is recycled and mining waste is left on site.

The segment of solid waste that is dangerous such as oils, battery metals, heavy metals from smelting industries and organic solvents are the ones we have to pay particular attention to.

Deforestation

Soil Erosion occurs when the worn out particles are dislodged and passed away by wind or water. Deforestation, agricultural development, temperature extremes, and human actions add to this erosion. Humans speed up this process by construction, mining, and overgrazing. It results in floods and cause soil erosion.

Forests hold up many habitats and ecosystems, which make available immeasurable feeding pathways or food chains to all species. During the past few years quite a lot of vast green land has been converted into deserts. Deforestation is slowly destroying the most dynamic flora and fauna areas in the human race.