This PPT prepared by Teacher Educator from Thiagarajar College of Preceptors Madurai for B.Ed Trainees.

1. Various Kind of Natural Recourse
S. Anbalagan,
Assistant Professor of Mathematics
Thiagarajar College of Preceptors,
Madurai

2. Various Kind of Natural Recourse
1. Land Resources
2. Forest Resources
3. Water Resources
4. Mineral Resources
5. Food Resources
6. Energy Resources

3. Land Resources
Out of 510 million sq. km of the world area
Land account for 29%(169 million square
km)
India has 2.4% of the land area of the world
Total area of world
25% forms of Mountain
45% plains
30% plateaus
Total area of world
1% human habits
11% Agriculture
24% grazing land
33% forest
28% rock and hills

4.  Land is regarded as the greatest among the
natural resources. It is one of the important
component of life supportsystem.
Importance of land
 It sustains many of the livingbeings
 Agricultural activities , animal husbandry
 It supports forests andgrasslands
 Human settlementand wildlife depends on
land
 Industrialization, urbanization
 Construction of roads and railway lines is
possible due to availability of land
Land Resources

5.  Landslides refer toanydown ward movementof
mass of bed rock under the influence ofgravity.
Types of Land Slides
Nature induced land
slide
 Theseare caused by natural factors Theseare
caused by natural factors such as heavy or
prolonged rains, high temperature,Earthquakes
,winds, snow falletc.
Man induced landslide
 Theseare caused due to humanactivities.
Land slides

6. Causes for Man induced land slides
 Mining activities in mountains orhills.
 Removal of vegetation in
mountains orhilly regions.
 Construction of dams orreservoirs
for hydro electric power.
 Cutting of slopes or mountains for
construction purposes.
 Agricultural activities on hillyregions.
 Over grazing on hillslopes.
 Make tunnels on mountains for road,
railwaylines etc.

7.  Obstruct roads andraillines
 Flow of water is disturbed
 Increases the turbidity inwater
 Loss of vegetation, animalsand human life
Control of land slides :
 Control of deforestation
 Afforestation
 Control and reckless mining
 Control on overgrazing
 Avoiding recklesscultivation
Effects of land slides

8.  Soil is the loose material lying on the
surface ofthe earth. Soil is formed by the
disintegration
and decaying of rocks by the weathering
process.
Importance of soil resources
 Supports all forms of life.
 Plants abort all nutrients fromsoil.
 Soil determines the animal lifeindustry.
 It also influences thepopulation
 Provides raw materials forindustries.
 Influences the agricultural growth,
population.
Soil erosion

9.  It refers to loss of the top fertile layerorpart
of the soil by natural agencies like running
water, ward and seawaves.
 Normal Soil Erosion: It is a natural
phenomenon or process. It is a slow prices
and helps in soil
 formation.
 Sheet erosion : Sheet erosion is refers to
uniform Removal of soil Over a large area
from the surface of Sloping lands by Rain
water.
Soil erosion

10.  Rill Erosion: Refers to
eroding of the soil in core use
by rain water running along
the slopes in the form of
channel
 Gully Erosion: Refers to the
eroding of soil inits course
by rain water running along
the slopes in the Form of rills
orvalleys
 Wind soil Erosion:
which is caused bywind,
more effective inarid and
semi arid regions.
Soil erosion

11. Causes of soil erosion
 Deforestation
 Over Grazing
 Heavy rainfall
 Strong winds
 Improper methods of cultivation
 Careless and excessiveirrigation
 Floods

12.  Reducing soil fertility
 Causing floods
 Making unfit cultivatedland
 Resulting desertification
Due tosilt storage capacityof tanksare reduced
Conservation of soil :
 Afforestation
 prevention of reckless cutting oftrees
 Controlled grazing
 Prohibition of shiftcultivation
 Reclamation of wastelands
 Improvement of soil fertility by growingcrops.
Effects of soil erosion