1. Prepared by :
Hazel Fredolin Kuntiong
Mary Grace Justine
Class : 4 Principled
2. Deforestation, clearance or clearing is the removal of
a forest or stand of trees where the land is thereafter
converted to a non-forest use.
Examples of deforestation include conversion of forestland
to farms, ranches, or urban use.
The most concentrated deforestation occurs in tropical
About 30% of Earth's land surface is covered by forests.
4. WHY IS DEFORESTATION IS
Deforestation occurs for multiple reasons:
trees are cut down to be used for building or
sold as fuel, (sometimes in the form of
charcoal or timber), while cleared land is
used as pasture for livestock and plantation.
5. CAUSES OF
Agricultural Activities :
Due to overgrowing demand for food products, huge amount of tress are fell
down to grow crops and for cattle gazing.
Wood is used as fuel both directly and indirectly, therefore trees are chopped for
supplies. Firewood and charcoal are examples of wood being used as fuel. Some
of these industries thrive on illegal wood cutting and felling of trees.
Further on order to gain access to these forests, the construction of roads are
undertaken; here again trees are chopped to create roads. Overpopulation too
directly affects forest covers, as with the expansion of cities more land is needed
to establish housing and settlements. Therefore forest land is reclaimed.
6. Desertification of land :
Some of the other factors that lead to deforestation are also
part natural and part anthropogenic like desertification of
land. It occurs due to land abuse making it unfit for growth
of trees. Many industries in petrochemicals release their
waste into rivers which results in soil erosion and make it
unfit to grow plants and trees.
Oil and coal mining require considerable amount of forest
land. Apart from this, roads and highways have to be built to
make way for trucks and other equipment. The waste that
comes out from mining pollutes the environment and affects
the nearby species.
(chiefly of environmental
pollution and pollutants)
originating in human
the process by which
fertile land becomes
desert, typically as a
result of drought,
7. Forest Fires:
Hundreds of trees are lost each year due to forest
fires in various portions of the world. This happens
due to extreme warm summers and milder winters.
Fires, whether causes by man or nature results in
huge loss of forest cover.
13. WHY IS IT IMPORTANT TO
PRESERVE TREES ?
and why is it so important to humans, flora and fauna!
14. Trees contribute to their environment by
providing oxygen, improving air quality,
climate amelioration, conserving water,
preserving soil, and supporting wildlife.
During the process of photosynthesis, trees
take in carbon dioxide and produce the
oxygen we breathe.
Trees provide us with the materials for tools