Geography HL
13
Chapters
193
Notes
Option A - Freshwater – Drainage basins
Option B - Oceans & Coastal Margins
Option C - Extreme Environments
Option D - Geophysical Hazards
Option E - Leisure, Tourism & 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
Unit 4 - Power, Places & Networks
Unit 5 - Human Development & Diversity
Unit 6 - Global Risks & Resilience
Geography HL
Option C - Extreme Environments
Climate Crisis In Extreme Environments: What's Happening In The Sahel, Senegal, And The Arctic
619 words
4 mins read
Last edited on 16th Oct 2024
Table of content
Impacts of climate change on food security in the sahel region
- Predicted temperature rise in the Sahel: 1.0–2.75°C. The arid conditions will worsen due to higher evaporation rates, even if precipitation increases.
- Implications: More common environmental hazards like floods and droughts disrupting agriculture, leading to reduced food production, increased food prices, and amplified hunger and food insecurity.
- Real-world example: As conditions worsen, people in poverty-stricken areas, such as Sahel, will face further hardship due to climate change.
Climate change management strategies in senegal
- Projected impacts by 2050: 20% reduction in rainfall, 4°C temperature increase leading to a 25% reduction in food yields. 4 million additional people at risk of food insecurity.
- Coping strategies:
- Improved soil fertility through careful use of fertilizers.
- Enhanced irrigation systems and pest control efficiency.
- Water and soil conservation techniques including diguettes (stone rows) to reduce run-off on slopes.
- Development of the Great Green Wall of the Sahara and Sahel Initiative to combat resource degradation and desertification.
Adaptation to water shortages in dry areas
- Increased mobility (traditional method)
- Better herd size and composition management.
- Exchange of livestock and livestock products.
- Utilization of drought-tolerant and wild species, tree crops.
- Windbreaks to reduce wind erosion of bare soil.
- Irrigation with silt-laden river water to restore soil.
- Dune stabilization using straw bales and xerophytic plants.
- Land enclosure to reduce wind erosion.
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Geography HL
Option C - Extreme Environments
Climate Crisis In Extreme Environments: What's Happening In The Sahel, Senegal, And The Arctic
619 words
4 mins read
Last edited on 16th Oct 2024
Table of content
Impacts of climate change on food security in the sahel region
- Predicted temperature rise in the Sahel: 1.0–2.75°C. The arid conditions will worsen due to higher evaporation rates, even if precipitation increases.
- Implications: More common environmental hazards like floods and droughts disrupting agriculture, leading to reduced food production, increased food prices, and amplified hunger and food insecurity.
- Real-world example: As conditions worsen, people in poverty-stricken areas, such as Sahel, will face further hardship due to climate change.
Climate change management strategies in senegal
- Projected impacts by 2050: 20% reduction in rainfall, 4°C temperature increase leading to a 25% reduction in food yields. 4 million additional people at risk of food insecurity.
- Coping strategies:
- Improved soil fertility through careful use of fertilizers.
- Enhanced irrigation systems and pest control efficiency.
- Water and soil conservation techniques including diguettes (stone rows) to reduce run-off on slopes.
- Development of the Great Green Wall of the Sahara and Sahel Initiative to combat resource degradation and desertification.
Adaptation to water shortages in dry areas
- Increased mobility (traditional method)
- Better herd size and composition management.
- Exchange of livestock and livestock products.
- Utilization of drought-tolerant and wild species, tree crops.
- Windbreaks to reduce wind erosion of bare soil.
- Irrigation with silt-laden river water to restore soil.
- Dune stabilization using straw bales and xerophytic plants.
- Land enclosure to reduce wind erosion.
Unlock the Full Content!
Dive deeper and gain exclusive access to premium files of Geography HL. Subscribe now and get closer to that 45 🌟