forest & biodiversity ppt
DESCRIPTION
a ppt presentation on forest and biodiversity.TRANSCRIPT
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FOREST & BIODIVERSITY
BHAWNAKOMALKIRANMANISHAMEERAPREETIKAPRIYADARSHINIPUJARASHISHIKHASHRISHASUSHMITA
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WHY FORESTS ARE IMPORTANT?•FOREST is the important source of raw material. •Almost 3billon people depends on wood for fuel for heating and cooking.•For industries they provide both Timber and Non- timber products.oTimber products like lumber ,pulp, paper etcoNon-timber like berries, medicinal herb, saps and oil.
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Forest Production• Source of valuable timber • Biodiversity, wildlife habitat• Shelter for local and indigenous people• Storehouse of food, fuel, medicines• Absorb carbon dioxide, emit oxygen• Help to stabilize climate• Aesthetic, spiritual, cultural values• Recreation, tourist attraction
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Threats to Forests• Illegal logging• Excessive commercial logging• Environmentally damaging logging practices• Fuel wood collection• Deliberately set forest fires• Conversion to agriculture• Poaching of animals and rare plants• Global warming; acid rain
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MEASURES TO PROTECT FOREST!!
• Creating awareness in the society.• Government initiative for saving trees.• Punishing the people and organization who
are cutting trees etc
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Biodiversity - Definition• The variability among living organisms from all
sources including terrestrial, marine, and other aquatic ecosystems and the ecological complexes of which they are a part; this includes diversity within species, between species and of ecosystems.
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TYPES OF BIODIVERSITY
• Genetic diversity - genetic variability or diversity within a species, i.e. between the individuals of a species
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2.Species diversity - diversity between different species Example ; Felis tigris• Felis domestica
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3. Ecosystem diversity – diversity within a region
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PLANT SPECIES IN INDIA AND WORLD
Taxa Species
India World• Bacteria 850 4000
• Viruses unknown 4000
• Algae 6500 40,000
• Fungi 14,500 72,000
• Lichens 2000 17,000
• Bryophyta 2850 16,000
• Pteridophyta 1100 13000
• Gymnosperms 64 750
• Angiosperms 17,500 250,000
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ANIMAL SPECIES IN INDIA AND WORLD
Taxa Species
India World• Insects 60,000 8,00000
• Mollusca 5000 100000
• Fishes 2,500 23,000
• Amphibians 190 4,520
• Reptiles 400 6,550
• Birds 1,175 8,400
• Mammals 872 4,231
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Why Biodiversity is important?
Provides food, fodder, fruit, fuel, timber, medicine
1.Commercial value :
Oil, Fertilizers etc. extracted from species of plants and animals.
2.Biological value:
Pollination Soil formation Nutrient enrichment
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3.Recreational Value:
Can not be measured in terms of money.
4. Aesthetic Value: Art, Poetry, Literature.
5.Scientific Value:
Gene Pool, Evolution, Human Welfare, etc,.
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Threats to Biodiversity
• Deforestation and overgrazing• Habitat destruction and fragmentation of the
area.
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• Poaching and hunting for flesh, fur,skin, horn, naiI and recreation.
• Forest fires including smoking in the woods.• Over exploitation of the resources.‑• Natural calamities like floods, high wind velocities,
earthquakes, etc.,.• Pollution of various kinds and release of toxic
substances.
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• Soil erosion and loss of soil nutrients.• Population pressure and unequal distribution
of the resources• Agricultural expansion• Spreading urbanization and establishment of
industries.• Construction of hydro electric power projects ‑
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• Climatic changes like depletion of ozone, global warming, increased concentration of carbon dioxide, etc,
• Mining activities and quarrying.• Lack of awareness.
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Impact of Loss Of Biodiversity
Global warming and climate change • Increased pollution• Soil erosion and loss of fertility
• Decomposition rate• by microbes is altered
• Nutrient cycling is altered
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CONSERVATION MEASURES• Maintenance of the integrity of the habitat and improvement of
habitat in productivity and quality for the desired species to grow and reproduce well.
• Prevention and control of forest fires. Burning of grasslands has
to be controlled. By controlling the forest fire, protection can be
given to wildlife.
• Excessive cutting should be eliminated and only mature trees
should be harvested. New seedlings should replace the
harvested trees.
• .
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• Measures to check the velocity of wind in deserted areas planting 'wind breaks' across the direction of wind is helpful. Trees and shrubs may be planted in several rows to check the blowing away of the fertile top soil, which determines the vegetational growth.
• Reforestation in degraded forest and agricultural wastelands with suitable strains of tree species, which are viable, genetically superior and disease resistant.
• The Management of natural forests, which will ensure future productivity and environmental stability, should be practiced.
• Improper land degradation due to mining activities should be stopped.
• Sensible and wise use of forest products and the public
awareness about the importance of forest wealth to mankind
and ecosystem can promote the conservation
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THANK YOU ALL