Geography SL
10
Chapters
152
Notes
Option A - Freshwater – Drainage basins
Option B - Oceans & coastal margins
Option C - Extreme Environments
Option D - Geophysical Hazards
Option E - Leisure, Tourism And Sport
Option F - The Geography Of Food & Health
Option G - Urban Environments
Unit 1 - Changing Population
Unit 2 - Global Climate - Vulnerability & Resilience
Unit 3 - Global Resource Consumption & Security
Geography SL
Option C - Extreme Environments
Unlock the potential of agriculture in arid areas: strategies & crops that thrive
651 words
4 mins read
Last edited on 16th Oct 2024
Table of content
Hot arid areas & agriculture
Opportunities for agriculture
- Long growing season due to heat and sunlight.
- Exotic rivers, desalination, and irrigation can provide needed water for farming.
- E.g., Oasis at Douz, Tunisia, produces dates, figs, and oranges.
- In oil-rich countries like Saudi Arabia and UAE, desalination plants provide water, making hydroponics possible.
Challenges for agriculture
- Lack of freshwater, abundant heat and sunlight, low rainfall, saline soil, dry winds, overgrazing, poor soil, and limited technology.
- Negative water balance: the output from evapotranspiration and stores of water exceed the input from precipitation (pEVT > ppt).
- Desert soils are arid and infertile due to low rainfall, high evapotranspiration, low organic content, thinness, lack of clay, and potential toxicity from soluble salts.
Sustainable agriculture approaches
- Reduce herd size and pressure on limited vegetation.
- Use solar panels for energy and animal dung for fertilizers.
- Plant fodder for animals.
- Use efficient irrigation methods (drip and sprinkler) and line irrigation channels with concrete.
- Build check dams and diguettes to collect water.
- Use salt-tolerant (halophytic) plants.
Semi-arid areas & drought-resistant fodder
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Geography SL
Option C - Extreme Environments
Unlock the potential of agriculture in arid areas: strategies & crops that thrive
651 words
4 mins read
Last edited on 16th Oct 2024
Table of content
Hot arid areas & agriculture
Opportunities for agriculture
- Long growing season due to heat and sunlight.
- Exotic rivers, desalination, and irrigation can provide needed water for farming.
- E.g., Oasis at Douz, Tunisia, produces dates, figs, and oranges.
- In oil-rich countries like Saudi Arabia and UAE, desalination plants provide water, making hydroponics possible.
Challenges for agriculture
- Lack of freshwater, abundant heat and sunlight, low rainfall, saline soil, dry winds, overgrazing, poor soil, and limited technology.
- Negative water balance: the output from evapotranspiration and stores of water exceed the input from precipitation (pEVT > ppt).
- Desert soils are arid and infertile due to low rainfall, high evapotranspiration, low organic content, thinness, lack of clay, and potential toxicity from soluble salts.
Sustainable agriculture approaches
- Reduce herd size and pressure on limited vegetation.
- Use solar panels for energy and animal dung for fertilizers.
- Plant fodder for animals.
- Use efficient irrigation methods (drip and sprinkler) and line irrigation channels with concrete.
- Build check dams and diguettes to collect water.
- Use salt-tolerant (halophytic) plants.
Semi-arid areas & drought-resistant fodder
Unlock the Full Content!
Dive deeper and gain exclusive access to premium files of Geography SL. Subscribe now and get closer to that 45 🌟