This slide mainly includes the soil pollution and its various aspects such as origin,sources, harmful effects, after effects of soil pollution and lastly methods to control the soil pollution etc..
This slide mainly includes the soil pollution and its various aspects such as origin,sources, harmful effects, after effects of soil pollution and lastly methods to control the soil pollution etc..
Over the past few decades, the increase in population and advances made in farming technology has increased the demand for crops and livestock from the agricultural industry. This growth in agricultural production has resulted in an increase in contaminants polluting soil and waterways.
Soil,Soil Pollution, Sources of Soil Pollution,
Effects Of Soil Pollution,
Control Of Soil Pollution,
Physically Control of Soil Pollution,
Chemically Control of Soil Pollution,
Thermally Control of Soil Pollution ,
Biologically Control of Soil Pollution
Covers information on soil formation, soil characteristics, soil food webs, globals soil maps, and ESTAR satellite data and a link to NCRS GIS soil database
This is an introductory soil science presentation that I give to Master Gardeners, agribusiness personnel, farmers, and soil science students. Please feel free to contact me at andykleinschmidt@gmail.com with any comments regarding the presentation.
Over the past few decades, the increase in population and advances made in farming technology has increased the demand for crops and livestock from the agricultural industry. This growth in agricultural production has resulted in an increase in contaminants polluting soil and waterways.
Soil,Soil Pollution, Sources of Soil Pollution,
Effects Of Soil Pollution,
Control Of Soil Pollution,
Physically Control of Soil Pollution,
Chemically Control of Soil Pollution,
Thermally Control of Soil Pollution ,
Biologically Control of Soil Pollution
Covers information on soil formation, soil characteristics, soil food webs, globals soil maps, and ESTAR satellite data and a link to NCRS GIS soil database
This is an introductory soil science presentation that I give to Master Gardeners, agribusiness personnel, farmers, and soil science students. Please feel free to contact me at andykleinschmidt@gmail.com with any comments regarding the presentation.
Ppt comprises the full information about environmental pollution, including water,air, soil and noice pollution with their pollutants and precautions to decrease their harms
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https://arxiv.org/abs/2306.08302
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https://www.microsoft.com/en-us/research/blog/graphrag-unlocking-llm-discovery-on-narrative-private-data/
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2. SOIL POLLUTION
Definition:
•Soil pollution is defined as the build-up in soils of persistent
toxic compounds, chemicals, salts,radioactive materials, or
disease causing agents, which have adverse effects on plant
growth and animal health.
•Soil is the thin layer of organic and inorganic materials that
covers the Earth's rocky surface.
•The organic portion, which is derived from the decayed
remains of plants and animals, is concentrated
in the dark uppermost topsoil.
3. •The inorganic portion made up of rock fragments,
was formed over thousands of years by physical and
chemical weathering of bedrock. Productive soils are
necessary for agriculture to supply the world with
sufficient food.
There are many different ways that soil can
become polluted, such as:
• Seepage from a landfill
• Discharge of industrial waste into the soil
• Percolation of contaminated water into the soil
• Rupture of underground storage tanks
• Excess application of pesticides, herbicides or
fertilizer
• Solid waste seepage
4. Types of Soil Pollution
• Agricultural Soil Pollution
i) pollution of surface soil
ii) pollution of underground soil
• Soil pollution by industrial effluents and solid wastes
i) pollution of surface soil
ii) disturbances in soil profile
• Pollution due to urban activities
i) pollution of surface soil
ii) pollution of underground soil
Causes of Soil Pollution
•Soil pollution is caused by the presence of man-made
chemicals or other alteration in the natural soil environment.
This type of contamination typically arises from the rupture
of underground storage links, application of pesticides,
percolation of contaminated surface water to subsurface
strata, oil and fuel dumping, leaching of wastes from landfills
or direct discharge of industrial wastes to the soil.
5. •The most common chemicals involved are petroleum
hydrocarbons, solvents, pesticides, lead and other
heavy metals. This occurrence of this phenomenon is
correlated with the degree of industrialization and
intensities of chemical usage.
•Pollution in soil is associated with
• Indiscriminate use of fertilizers
• insecticides and herbicides
• Dumping of large quantities of solid waste
• Deforestation and soil erosion
Indiscriminate use of fertilizers
6. •Farmers generally use fertilizers to correct soil deficiencies.
•Fertilizers contaminate the soil with impurities, which come
from the raw materials used for their manufacture.
• Mixed fertilizers often contain ammonium nitrate
(NH4NO3), phosphorus as P2O5, and potassium as K2O.
•For instance, As, Pb and Cd present in traces in rock
phosphate mineral get transferred to super phosphate
fertilizer.
•The over use of NPK fertilizers reduce quantity of vegetables
and crops grown on soil over the years.
• It also reduces the protein content of wheat, maize, grams,
etc., grown on that soil.
•The vegetables and fruits grown on overfertilized soil are
more prone to attacks by insects and disease.
7. Indiscriminate use of pesticides, insecticides and herbicides
•Plants on which we depend for food are under attack from
insects, fungi, bacteria, viruses,rodents and other animals,
and must compete with weeds for nutrients.
•To kill unwanted populations living in or on their crops,
farmers use pesticides.
• The first widespread insecticide use began at the end of
World War II and included DDT
(dichlorodiphenyltrichloroethane) and gammaxene.
8. •
•
Pesticides not only bring toxic effect on human and
animals but also decrease the fertility of the soil. Some of
the pesticides are quite stable and their bio- degradation
may take weeks and even months.
Pesticide problems such as resistance, resurgence, and
heath effects have caused scientists to seek alternatives.
Pheromones and hormones to attract or repel insects and
using natural enemies or sterilization by radiation have
been suggested.
Dumping of solid wastes
• In general, solid waste
includes garbage, domestic
refuse and discarded solid
materials such asthose from
commercial, industrial and
agricultural operations.
9. •They contain increasing amounts of paper, cardboards,
plastics, glass, old construction material, packaging material
and toxic or otherwise hazardous substances.
•Since a significant amount of urban solid waste tends to be
paper and food waste, the majority is recyclable or
biodegradable in landfills. Similarly, most agricultural waste
isrecycled and mining waste is left on site.
•The portion of solid waste that is hazardous such as oils,
battery metals, heavy metals from smelting industries and
organic solvents are the ones we have to pay particular
attention to.
• They also contaminate drinking water aquifer sources. More
than 90% of hazardous waste is produced by chemical,
petroleum and metal-related industries and small businesses
such as dry cleaners and gas stations contribute as well.
10. Deforestation
•Soil Erosion occurs when the weathered soil
particles are dislodged and carried away by
wind or water.
• Deforestation, agricultural development,
temperature extremes, precipitation including
acid rain, and human activities contribute to
this erosion.
•Humans speed up this process by construction,mining,
cutting of timber, over cropping and overgrazing.
• It results in floods and cause soil erosion.
•Many scientists believe that a wealth of
medicinal substances including a cure for
cancer and aids, lie in these forests.
•Deforestation is slowly destroying the
most productive flora and fauna areas
in the world, which also form vast tracts of
a very valuable sink for CO2.
12. Pollution of surface soils
•Urban activities generate large
quantities of city wastes including
several Biodegradable materials
(like vegetables, animal wastes, papers,
wooden pieces, carcasses, plant twigs, leaves, cloth
wastes as well as sweepings) and many non-biodegradable
materials (such as plastic bags, plastic bottles, plastic wastes,
glass bottles, glass pieces, stone / cement pieces).
•On a rough estimate Indian cities are producing solid city
wastes to the tune of 50,000 - 80,000 metric tons every day.
•If left uncollected and decomposed, they are a cause of
several problems such as:
• Clogging of drains: Causing serious drainage problems
including the burst / leakage of drainage lines leading to
health problems.
• Foul smell: Generated by dumping the wastes at a place.
13. Pollution of Underground Soil
Underground soil in cities is likely to be polluted by
• Chemicals released by
Industrial wastes and
industrial wastes.
• Decomposed and partially
decomposed materials of sanitary
wastes.
•Many dangerous chemicals
like cadmium, chromium, lead, arsenic, selenium products are
likely to be deposited in underground soil. Similarly
underground soil polluted by sanitary wastes generate
many harmful chemicals.
•These can damage the normal activities and ecological
balance in the underground soil.
14. Causes in brief:
• Polluted water discharged from factories
• Runoff from pollutants (paint, chemicals, rotting organic
material) leaching out of landfill
• Oil and petroleum leaks from vehicles washed off the road
by the rain into the surrounding habitat
• Chemical fertilizer runoff from farms and crops
• Acid rain (fumes from factories mixing with rain)
• Over application of pesticides and fertilizers
• Purposeful injection into groundwater as a disposal method
• Interconnections between aquifers during drilling (poor
technique)
• Septic tank seepage
• Lagoon seepage
• Sanitary/hazardous landfill seepage
• Cemeteries
• Scrap yards (waste oil and chemical drainage)
• Leaks from sanitary sewers
15. Effects of Soil Pollution
Agricultural
• Reduced soil fertility
• Reduced nitrogen fixation
• Increased erodibility
• Larger loss of soil and nutrients
• Deposition of silt in tanks and reservoirs
• Reduced crop yield
• Imbalance in soil fauna and flora
Industrial
• Dangerous chemicals entering underground water
• Ecological imbalance
• Release of pollutant gases
• Release of radioactive rays causing health problems
• Increased salinity
• Reduced vegetation
16. Urban
• Clogging of drains
• Inundation of areas
• Public health problems
• Pollution of drinking water sources
• Foul smell and release of gases
• Waste management problems
Control of soil pollution
•The following steps have been
suggested to control soil pollution.
• To help prevent soil erosion,
we can limit construction in
sensitive area.
•In general we would need less
fertilizer and fewer pesticides
if we could all adopt the three R's:
Reduce,Reuse, and Recycle. This would give us less solid waste.
17. •Reducing chemical fertilizer and pesticide use
•Reusing of materials
•Recycling and recovery of materials
•Reforesting
•Solid waste treatment
18. Conclusion:
Thus we have analyzed about
what are the causes of soil pollution
and effects of soil pollution.Since we
have to realise the importance of soil
prevention and steps to be taken to
reduce soil pollution. MAKE SOIL
HEALTH AND WEALTH….