Hot Deserts (AQA GCSE Geography): Flashcards
📚Flashcards
Practise the cards
15 cards from this deck
ShowHide
Practise the cards
15 cards from this deck
What is desertification?
What is desertification?
Land becoming more desert-like, drier & less productive
Proportion of world's land at risk from desertification
Proportion of world's land at risk from desertification
A third
Famous area at risk from desertification in Africa
Famous area at risk from desertification in Africa
Sahel (below Sahara Desert)
Climate change effect on rainfall in dry areas
Climate change effect on rainfall in dry areas
Reduces rainfall
How higher temps contribute to desertification
How higher temps contribute to desertification
More water evaporates from land & plants, drying soil
Overgrazing effect on desertification
Overgrazing effect on desertification
Cattle eat plants faster than they can regrow
Over-cultivation effect on soil
Over-cultivation effect on soil
Uses up all nutrients in soil
What is salinization?
What is salinization?
Salts drawn to surface when water evaporates; toxic to plants
How afforestation reduces desertification
How afforestation reduces desertification
Tree roots hold soil together, reduce erosion
What is agroforestry?
What is agroforestry?
Growing trees amongst crops
Earth dams use in water management
Earth dams use in water management
Store water in wet season for dry season irrigation
Animal manure use in soil management
Animal manure use in soil management
Used as fertilizer for crops
Crop rotation benefit
Crop rotation benefit
Different nutrients used, same ones not depleted
Bunds/magic stones purpose
Bunds/magic stones purpose
Hold water on soil, prevent runoff
Solar cookers benefit for desertification
Solar cookers benefit for desertification
Uses sun's energy instead of fuel wood