NATURAL RESOURCES
NATURAL RESOURCES
0
20
40
60
80
100
120
AUSTRALIA CANADA FRANCE BRAZIL INDIA
OTHER USE
FOREST
PASTURE
CROPLAND
PLATEAUS
Plateaus are large elevated tableland
separated from its surroundings areas by
steep slopes. They have a fairly l...
Soil is the uppermost layer of the earth.
It originates from parent rock and
contains both organic and inorganic
substance...
SOIL PROFILE
* Soil profile refers to a vertical cross
section of the soil from the surface
to the parent rock.
*The O-Hor...
PARENT MATERIAL:
These are the from which the soil is formed due to
weathering. These are of two types:
*Transported:
This...
RELIEF:
Altitude and the slope of the land determine
the rate of accumulation of soil.
CLIMATE:
soil formation mainly depe...
ALLUVIAL SOIL
Alluvial soil is formed by the alluvial
deposits of various rivers. It consists of sand, silt and
clay. This...
BLACK SOIL
This soil is formed due to weathering of
basaltic lava rocks. It is black to grey in colour due to
presence of ...
RED SOIL
This soil is red in colour due to the presence of
iron oxides. It is mostly available in low rainfall region. The...
LATERITE SOIL
This soil is mostly available in high
temperature and heavy rainfall regions. Laterite soil
is infertile in ...
ARID SOIL
This soil is red to brown in colour. It forms mostly in
the dry regions, such as deserts. It has sandy texture
a...
MOUNTAIN SOIL
Mountains are rich source of minerals natural
forests and rivers.It is found on the hill slopes and high
alt...
SALINE AND ALKALINE SOIL
These soils are unfit for cultivation as they contain
various salts like sodium, calcium magnesiu...
SOIL EROSION
It is the removal of topmost layer of the soil. It occurs
due to natural factors and human activities. Variou...
*CONTOUR PLOUGHING:
It is done to decelerate the flow
of water.
*TERRACE CULTIVATION:
It is done by cutting steps on
the s...
WATER RESOURCES
Earth is a watery planet. It is the most important natural
resources. Water is a renewable resource. Nearl...
SCARCITY OF WATER
*Large growing population.
*Growing demand of water.
*Drying up of water sources.
*Continuous lowering o...
CONSERVATION OF WATER
*Rain harvesting:
Rain is the main form of water for us.
Rainwater harvesting system methods is most...
OTHER WAYS TO CONSERVE WATER
*Sprinkle and drip irrigation reduce wastage of water and helps
in conservation mainly in the...
Natural resources.ppt
Natural resources.ppt
Natural resources.ppt
Natural resources.ppt
Natural resources.ppt
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Natural resources.ppt

consists of the ever wealthy natural resources
Published on: Mar 3, 2016
Published in: Education      
Source: www.slideshare.net


Transcripts - Natural resources.ppt

  • 1. NATURAL RESOURCES NATURAL RESOURCES
  • 2. 0 20 40 60 80 100 120 AUSTRALIA CANADA FRANCE BRAZIL INDIA OTHER USE FOREST PASTURE CROPLAND
  • 3. PLATEAUS Plateaus are large elevated tableland separated from its surroundings areas by steep slopes. They have a fairly level land on the top. Plateaus are quite widespread and are found all over the earth. Plateaus have been subjected to erosion over the years by agents of gradation. plateaus are rich in mineral deposits so mining activities are carried out in these regions. The Deccan plateau in India, The plateau
  • 4. Soil is the uppermost layer of the earth. It originates from parent rock and contains both organic and inorganic substances. Fertility of a soil depends on depth.
  • 5. SOIL PROFILE * Soil profile refers to a vertical cross section of the soil from the surface to the parent rock. *The O-Horizon is the upper most layer of the soil. It is dark in color due to humus present in the soil. *The second layer is the A-Horizon or top soil. It experiences leaching and also contains humus which provides plants with nutrients. * The next layer is the B-Horizon. It contains minerals. It has lesser amount of humus * C-Horizon consists mostly of weathered parent rocks. *The last layer is the R-Horizon or the parent rock. SOIL PROFILE
  • 6. PARENT MATERIAL: These are the from which the soil is formed due to weathering. These are of two types: *Transported: This is formed by the river alluvium glacial deposits, wind blown deposits etc and has no relationships with the region of deposition is called transported soil. This Is also called ex-situ. Eg: Alluvial soil. *sedentary: This has a strong correlation with the parent rock and is not transported by the agents of gradation is called as sedentary soil.It is also known as in-situ e.g.: black Soil.
  • 7. RELIEF: Altitude and the slope of the land determine the rate of accumulation of soil. CLIMATE: soil formation mainly depends on the climate of a region especially, its temperature and rainfall. Few centimeters of soil takes nearly a thousand years to form
  • 8. ALLUVIAL SOIL Alluvial soil is formed by the alluvial deposits of various rivers. It consists of sand, silt and clay. This soil is light to dark in colour and is porous and rich in humus. There are two kinds of alluvial soil bhangar soils-older alluvial soil and khadar soils- newer alluvial soil. This soil is most fertile & suitable for the growth of rice and jute. Eg: Punjab, Uttar Pradesh, river ganga-brahmaputra.
  • 9. BLACK SOIL This soil is formed due to weathering of basaltic lava rocks. It is black to grey in colour due to presence of iron oxide. Black soil is rich in clay content and can retain moisture. It is found Maharashtra, Andhra Pradesh etc. The soil suitable for cultivation of cotton. This black soil is known as black cotton soil and as regur soil.
  • 10. RED SOIL This soil is red in colour due to the presence of iron oxides. It is mostly available in low rainfall region. The red soil is sandy in nature. Red soil is rich in iron content and has very less humus. This soil is located in the periphery of the black soil region in the states of Tamilnadu, Madhya Pradesh, Maharashtra and West Bengal. Red soil is suitable for the growth of millets, potatoes, wheat, etc.
  • 11. LATERITE SOIL This soil is mostly available in high temperature and heavy rainfall regions. Laterite soil is infertile in nature as the soil nutrient due to soil are washed away or percolate downwards due to heavy rainfall. This process is also called leaching. The Laterite soil is good for the growth of tea,coffee,cashew rubber and coconut. This is found in the states of Assam, Tamilnadu etc.
  • 12. ARID SOIL This soil is red to brown in colour. It forms mostly in the dry regions, such as deserts. It has sandy texture and is saline in nature and also lacks in humus and moisture. Its fertility can be improved by use of irrigation. It is mostly found in Rajasthan, Punjab Haryana and Northern Gujarat.
  • 13. MOUNTAIN SOIL Mountains are rich source of minerals natural forests and rivers.It is found on the hill slopes and high altitude regions. It is generally thin in the mountanious region and is rich in humus content. The type of soil varies according to the altitude.Tea,coffee,spices and fruits are grown in these regions. These areas are found in the northern and northeast areas in india.these are predominant in the states Assam Sikkim etc.,
  • 14. SALINE AND ALKALINE SOIL These soils are unfit for cultivation as they contain various salts like sodium, calcium magnesium etc., in higher concentrations. They are sandy to loamy in texture. They are found in Gujarat, Haryana, Uttar Pradesh. PEATY AND MARSHY SOILS These soils are found in humid regions they are formed by accumulation of organic matter and are generally black in colour. Peaty and marshy soils are acidic in nature. These are mostly found in coastal areas of kerala,odissa,sunderbans regions of the west bengal.
  • 15. SOIL EROSION It is the removal of topmost layer of the soil. It occurs due to natural factors and human activities. Various human activities deforestation river erosion etc.,It causes loss of fertility and decrease cultivity.Rivers cut through the soil and form deep channels called gullies sometimes layers of soil over a large area are moved by running water. This is known as sheet erosion. Land which becomes unfit for cultivation is known as bad lands. Soil eroded by the rivers causes heavy silting and may even divert or change the course of a river. This affects the water table, plants, animals and human beings alike.
  • 16. *CONTOUR PLOUGHING: It is done to decelerate the flow of water. *TERRACE CULTIVATION: It is done by cutting steps on the slopes of hilly areas making terraces *STRIP CROPING: It involves growing of strips of grass between crops. *Tress are planted to check the wind velocity also called as shelter belts. SOIL CONSERVATION
  • 17. WATER RESOURCES Earth is a watery planet. It is the most important natural resources. Water is a renewable resource. Nearly 71% of the earth is covered with water and about 96.5% of the total volume of water. Water is used for various purposes. The availability of water varies with space and time. Water availability is mainly during the monsoon seasons. When the rainfall fails in monsoon season there will be scarcity of water. Many dams were built to use water storage of water. The water is also stored in reservoirs for various purpose.These dams are called multipurpose dams. Eg: damodar valley project on river damodar.
  • 18. SCARCITY OF WATER *Large growing population. *Growing demand of water. *Drying up of water sources. *Continuous lowering of water table. *Variation in seasonal and annual precipitation. *Due to social inequality. *Overuse of industrial effluent, chemical fertilizer, contaminate water. *Low awareness about water pollution.
  • 19. CONSERVATION OF WATER *Rain harvesting: Rain is the main form of water for us. Rainwater harvesting system methods is most important natural methods. In the process rainwater is collected from the rooftops of houses and reservoirs where it is stored. It recharges the groundwater for drinking as well as for irrigation. Rooftop rainwater harvesting is widely practiced in Rajasthan.
  • 20. OTHER WAYS TO CONSERVE WATER *Sprinkle and drip irrigation reduce wastage of water and helps in conservation mainly in the dry areas. *Afforestation is an important method to conserve water. It increases percolation and recharge the underground water table. *mulching is a protective covering usually of organic matter such placed around the plant to prevent evaporation of moisture. This is another way to conserve water. *Water pollution can be controlled by treating industrial effluents.