F:Hot and Semi-Arid Environments

Question 1

Define ecological restoration

Answer 1

The process of assisting recovery of an ecosystem that has been degraded, damaged or destroyed

Question 2

Methods agriculture is adapting to desertification

Answer 2

• Zai Holes- small plant pits filled with organic matter, that trap water and encourage nutrients
• Contour Bands-Laying stones along contours which trap rainwater and encourage infiltration
• Growing trees- prevents soil erosion

Question 3

Define Sustainability

Answer 3

Development that meets the needs of the present, without compromising the ability of future generations to meet their needs

Question 4

Sustainable agriculture

Answer 4

• Reducing herd sizes
• Allowing grass to recover
• Use of solar devices
• Tree planting
• Limiting water use
• Drought tolerant crops