In this ppt i try to explain introduction of land degradation .and also causes of it .and explain with figure . i expect that my ppt usefull to all.THIS PPT use for enviroment also.

1. LAND DEGRADATION
 INTRUDUCTION
• Land degradation is a process in which the value of the
biophysical environment is affected by a combination of
human-induced processes acting upon the land.
• It is viewed as any change or disturbance to the land
perceived to be deleterious or undesirable.
• Land degradation is the most important environmental
problem currently challenging sustainable development
in many parts of the world. The problem is most acute
where the environment is intrinsically vulnerable and
where the population is losing control of its own
resources.

3. • Natural hazards are excluded as a cause;
however human activities can indirectly affect
phenomena such as floods and bush fires.

4. CAUSES OF LAND DEGRADATION
1. Land clearance, such as clear cutting and deforestation.
2. Agricultural depletion of soil nutrients through poor
farming practices.
3. Livestock including overgrazing and over drafting.
4. Inappropriate irrigation and over drafting.
5. Urban sprawl and commercial development.
6. Vehicle off-roading.
7. Quarrying of stone, sand, ore and minerals.
8. Increase in field size due to economies of scale,
reducing shelter for wildlife, as hedgerows and copses
disappear.

5. 9. Exposure of naked soil after harvesting by heavy
equipment.
10. Monoculture, destabilizing the local ecosystem.
11. Dumping of non-biodegradable trash, such as plastics
12. Soil degradation, e.g
I. Soil contamination
II. Soil erosion
III. Soil acidification
IV. Loss of soil carbon

6. Soil erosion by wind or water

7. • WATERLOGGING AND SALINIZATION OF IRRIGATED LAND.
• OVER EXTRACTION OF WELLS, RIVERS AND DAMS .

8. EXCESSIVE AND CONTINUOUS USE OF FERTILISER, HERBICIDE
AND PESTICIDE .

9. THANK
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