NATURAL RESOURCES
Natural
resources (economically referred to as land or raw materials) occur naturally within environments that
exist relatively undisturbed by mankind, in a natural form.
FOREST RESOURCES
2.1Commercial uses
Man
depends heavily on a larger number of plant and animal products from forests
for his daily needs. The chief product that forests supply is wood, which is
used as fuel, raw material for various industries as pulp, paper, newsprint,
board, timber for furniture items, other uses as in packing articles, matches,
sports goods etc.
Indian
forests also supply minor products like gums, resins, dyes, tannins, fibers,
etc.
Many of
the plants are utilized in preparing medicines and drugs; Total worth of which
is estimated to be more than $300 billion per year.
Many
forests lands are used for mining, agriculture, grazing, and recreation and for
development of dams.
Depending
upon the climate conditions, forest may be classified as:
Tropical Rain Forests: They
are evergreen broadleaf forests found near the equator. They are characterized by high temperature,
high humidity and high rainfall, all of which favor the growth of trees.
Tropical deciduous forests: They
are found a little away from the equator and are characterized by a warm climate the year round. Rain
occurs only during monsoon.
Tropical scrub forests: They
are found in areas where the day season is even longer. Temperate rain forests: They are found in temperate areas with
adequate rainfall. These are dominated
by trees like pines, firs, redwoods etc.
Temperate deciduous forests: They
are found in areas with moderate temperatures.
Evergreen coniferous forests (Boreal Forests): They
are found just south of arctic tundra. Here
winters are long, cold and dry. Sunlight is available for a few hours only.
2 Ecological uses
The
ecological services provided by our forests may be summed up as follows:
Production of Oxygen: The
main green house gas carbon dioxide is absorbed by the forests as a raw material for photo synthesis. Thus
forest canopy acts as a sink for carbon dioxide thereby reducing the problem of
global warming caused by green house gas CO2
Wild life habitat: Forests are the homes of
millions of wild animals and plants. About 7 million species are found in the tropical forests alone.
Regulation of hydrological Cycle:
Forested watersheds act like giant sponges, absorbing the rainfall, slowing down the runoff. They control
climate through transpiration of water and seed clouding.
Soil Conservation: Forests
bind the soil particles tightly in their roots and prevent soil erosion. They also act as wind breakers.
Pollution moderators: Forests
can absorb many toxic gases and can help in keeping the air pure and in preventing noise pollution.
3 Over Exploitation of Forests
Man
depends heavily on forests for food, medicine, shelter, wood and fuel.
With growing
civilization the demands for raw material like timber, pulp, minerals, fuel
wood etc. shot up resulting in large scale logging, mining, road-building and
clearing of forests.
Our
forests contribute substantially to the national economy.
The
international timber trade alone is worth over US $ 40 billion per year.
The
devasting effects of deforestation in India include soil, water and wind
erosion, estimated to cost over 16,400 cores every year.
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