Natural Resources
• Biotic – Biotic resources are obtained from the
biosphere,, such as forests and their products,
biosphere
animals, birds and their products, fish and other
marine organisms
organisms.. Mineral fuels such as coal and
petroleum are also included in this category because
they are formed from decayed organic matter
matter..
• Abiotic – Abiotic resources include nonnon-living
things.. Examples include land, water, air and ores
things
such as gold, iron, copper, silver etc
etc..
1.
On the basis of renewability
Renewable resources are ones that can be
replenished or reproduced easily.
easily.
Sunlight, air, wind, etc
etc.. , are continuously
available and their quantity is not affected by
human consumption
consumption..
Many renewable resources can be depleted by
human use, but may also be replenished, thus
maintaining a flow
flow..
Some of these, like agricultural crops, take a
short time for renewal
renewal;; others, like water, take a
comparatively longer time, while still others, like
forests, take even longer.
longer.
On the basis of renewability
2. NonNon-renewable resources are formed over very
long geological periods.
periods.
Minerals and fossil fuels are included in this
category.
Since their rate of formation is extremely slow,
they cannot be replenished once they get
depleted..
depleted
Of these, the metallic minerals can be rere-used by
recycling them. But coal and petroleum cannot
be recycled.
Nonrenewable Resources
A nonrenewable resource is a natural
resource that cannot be re-made or regrown at a scale comparable to its
consumption.
Nuclear Energy
Nuclear fission uses
uranium to create
energy.
Nuclear energy is a
nonrenewable
resource because
once the uranium is
used, it is gone!
Coal, Petroleum, and Gas
These are considered
nonrenewable because
they can not be
replenished in a short
period of time
time.. These
are called fossil fuels.
fuels.
HMMMM....
If
nonrenewable
resources are resources
that cannot be re
re--made
at a scale comparable
to
its
consumption,
what are renewable
resources?
RENEWABLE RESOURCES
Renewable resources
are natural resources
that can be replenished
in a short period of time.
time.
● Solar ● Geothermal
● Wind ● Biomass
● Water
SOLAR
Energy from the
sun.
Why is energy
from the sun
renewable?
GEOTHERMAL
Energy from Earth’s heat
heat..
WIND
Energy from
the wind.
wind.
BIOMASS
Energy from
burning
organic or
living
matter.
WATER or HYDROELECTRIC
Energy from
the flow of
water.
On the basis of availability
1. Inexhaustible natural resources
resources-- Those resources
which are present in unlimited quantity in nature
and are not likely to be exhausted easily by human
activity are inexhaustible natural resources
(sunlight, air etc
etc..)
2. Exhaustible natural resources
resources-- The amount of
these resources are limited.
limited. They can be exhausted
by human activity in the long run (coal, petroleum,
natural gas, etc
etc..)
Forest resources
• Use and overexploitation
• Deforestation
• Desertification
FUEL WOOD CONSUMPTION
INDUSTRIAL
DEVELOPMENT
OVER GRAZING
AGRICULTURE
CAUSES OF
DEFORESTATION
DEVELOPMENTAL
PROJECTS
Causes of deforstration
•
•
•
•
•
•
•
Expansion of agriculture
Animal grazing
Timber extraction
Mining and deforestration
Large dams and deforestration
Forest fire
Pest diseases
Conservation strategies
• Afforestation
• Conservation /
protection forestry
• Intensive plantations
• Social forestry
• Agroforestry
• Forest conservation
through law
Mineral Resources
• Mining : 4 phases
Prospecting
Exploration
Development
Exploitation
• Mine safety
• Environmental
problems
Land resources
•
•
•
•
•
•
•
Land degradation
Landslides
Soil erosion
Overgrazing
Mining activities
Desertification
Role of individual in
conservation of natural
resources
• Equitable use of
resources for sustainable
lifestyles
Natural Resource Management
• It is a discipline in the management of natural
resources,, with a particular focus on how management
resources
affects the quality of life for both present and future
generations.
• It is interrelated with the concept of sustainable
development..
development
• Natural resource management specifically focuses on a
scientific and technical understanding of resources
and ecology and the lifelife-supporting capacity of those
resources.
Conservation of
Natural Resources
Thank you!