The Important of Proper Management of Development Activities by shirley&bong.ppt
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Transcript of The Important of Proper Management of Development Activities by shirley&bong.ppt
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The Important of Proper
Management of Development
Activities and the Ecosystem
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1.Sustainable development isthe balance between the demands for
resources with the need to conserve the
resources.2.Human activities that are harmful to the
environment have a serious environmental
impact.
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Measures taken in the
management of
development activities
1.Implementation of laws
2.Use of technology
3.Education on the
management of
resources
4.Preservation and
conservation of thenatural resources
5.The practice ofbiological control
6.The use of
renewable energy
7.The efficient use of
energy
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Implementation of laws
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Laws are created to protect the
environment.a)Environmental Quality Act, 1974, 1985
Prevents and controls pollution.
b)National Forestry Act, 1984
Protects and preserves our forests and wildlife.
c)Pesticides Act, 1974
Controls the use of pesticides.
d)Protection of Wildlife Act, 1972Protects wildlife.
e)Fisheries Act, 1985
Controls marine pollution
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Use of technology
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Use of technology
1. Modern technology can be used to reduce pollution and
prevent further damage of the environment.
2. Rubbish can be sorted into recyclable materials and non-
recyclable materials. Non-recyclable materials can be burnt in
incinerators where heat produced can be reclaimed and used in
heating or to generate electricity.
3. Catalytic converters are used to reduce the amount of nitrogen
oxides emitted and to convert harmful gases released during
combustion if fossil fuels into less harmful products.
4. Unleaded petrol can be used to replace leaded petrol.
5. Filters are fixed on chimneys of factories to reduce the amount
of pollutants.
6. Sewage is treated before it discharged into water.
7. Bacteria can be used to breakdown oil which is spilled in the
sea.
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Recycling means collecting and segregating
waste according to the types of materials and
turning this waste into new products.
Reuse means use things such as old plastic
containers and bottle again for other purposes
instead of throwing them away.
Reduce means cutting down on the use of
materials. For example, the use of plastic bagswhich are non-biodegradable should be reduced.
Instead, use paper bags which are biodegradable
and environment friendly.
Recover means to harness heat energy from the
burning of materials or refuse in factories orincineration plants. This heat energy can be used
to generate electricity.
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1.Preservation involves efforts to protect the ecosystem to
maintain its dynamic equilibrium.
2.Conservation involves efforts to return an affected ecosystem
back to its dynamic equilibrium.
3.Measure that are taken include:
a)Control of grazing by animals
b)Farming along contours
c)Crop rotation
d)Cultivation on terraces
e)Proper use of fertilizers
f)Effective irrigation and drainage4.Water sources must bepreserved to ensure clean water supply.
4.Mangrove swamps are rich in biodiversity. Mangrove swamps
are important in flood control, nutrient retention, sediment
control and prevention of coastal erosion. Efforts must be made
to preserve and conserve the mangrove swamps.
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1)Renewable energy is the energy flow that occurs naturally in
the environment and be harnessed for the benefit of humans.
2)It is inexhaustible and does not pollute the environment.3)Renewable energy are:
Solar energy
Wind energy
Geothermic energy
Hydroelectric energy
Biomass energy
Wave energy
4)Non-renewable energy like fossil fuels will be exhausted and
cannot be renewed if its usage is not controlled.
5)Use natural gas and reduce combustion of fossil fuels.
6)Invention of the hybrid and electric cars can reduce ourdependence on fossil fuels.
Renewable energy
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The efficient use of energy
Reduce the burning of coal, petroleum and other fossil fuels.
Substitute natural gas for coal at power plants.
Improve fuel efficiency in vehicles-use cars that run on energy-efficient
engines.
Use a cleaner fuel by reducing the content of sulphur in diesel andswitching to gas.
Improve energy efficiency in factories.
Use more hybrid cars which combine electric and gasoline engines.
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Biological control
Biological control is the use of natural predators to control the population of
pest species. Example:
The breeding of owls to control the rat population in oil palm estate.
The use of female insects lchneumor that produce larvae which feed the
caterpillars that bore into the paddy stems.The use of guppy fish to eliminate mosquito larvae.
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