1. Deserts and Parks

2. World Wide deserts Exist between 15 and 30 N and S
Only Europe lacks warm deserts.
Estimates predict that the world should have 1/3 deserts
Reality= 42%desert.

3. Desertification
The change in semi-arid and dry shrub lands (marginal) to deserts as a process of climate and human activities.
Human practices…
To much farming
To much grazing
Poisoning of soil
To much pesticide use
“ “Nitrates
Over Irrigation-salts are left
Lowering of water table

4. Continent with greatest desertification
Africa
Changing of natural weather patterns
A product of a warming climate.

5. Solutions Change in agricultural practices Genetic revolution
Looking at the whole ecosystem
Genetic revolution
Creating low water and salt species

6. National Parks Based on conservation biology.
The science of keeping the diversity in natural environments.

7. World wide Philosophy 120 countries have national parks.
There are 1100 parks world wide.
The first USA 1912
There are 54 of them in the USA
Most in the west
The closest to us is the (Shenandoah National Park)