Alevel geography - case study, Cheat Sheet of Geography

Alevel geography A* case study notes for coasts aqa.

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2025/2026

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C.S – Sundarbans, Bangladesh
Location:
It’s surrounded by India and is in southeast Asia.The Sundarbans is a coastal zone
occupying the world’s largest delta, that extends over 10,000km^2 of southern
Bangladesh and India on the Bay of Bengal. The delta is formed forms the sediment
deposited by three of the world's largest rivers.
Features of the coastal system:
- 80% country is low lying
- 30% live in coastal zone (Bay of Bengal)
- Large population (149,319,000) located close to the river (farming, water)
- Monsoon climate – storm surges format the Bay of Bengal.
- Snow melt from the Himalayans
Features of the Sundarbans delta:
- Extensive network of interconnecting smaller channels called Khals drain the the
land when the tide goes out
- Low flat land from the deposits
- Large channels running north to south
Plants and animals:
- Coastal zone occupying the world’s largest delta
- Sediment deposited by three of the world’s great rivers, the Ganges, Brahmaputra
and Meehan
- Made of mangrove and swamps
- Known for its wide range of animals, including 260 bird species, the bengal tiger
and other threatened species such as the estuarine crocodile and the Indian
python.
- Kingfisher and fish that live in the canals
- Deer and monkeys
Risks Responses
- Wildlife tiger - Local initiatives
-Reduction in the number of fish
available meaning fishermen have
to go deeper into the forest
-Began shrimp farming: nursery
farms for baby shrimp which isn’t
good for biodiversity
- Competing with neighbouring
villages that sell the fish abroad
-Re planting mangrove forests
-Over-farming of shrimp which
destroy other animals and eco
systems
-This changes soils and water
quality which kills the fresh-water
fish
-Rice paddy’s destroyed due tot the
salt water from the shrimp farms
- Government owned lands that are
prop tested for the use by local
people
- Mangrove forest destroyed due to
the high levels of salt this means
that the coastline is losing its
protection
- Wetland habitats protected
- 1 million people depend on the
mangrove forest meaning that
there are large amount of
-NGOs run educational programs
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Location:

It’s surrounded by India and is in southeast Asia.The Sundarbans is a coastal zone occupying the world’s largest delta, that extends over 10,000km^2 of southern Bangladesh and India on the Bay of Bengal. The delta is formed forms the sediment deposited by three of the world's largest rivers. Features of the coastal system:

  • 80% country is low lying
  • 30% live in coastal zone (Bay of Bengal)
  • Large population (149,319,000) located close to the river (farming, water)
  • Monsoon climate – storm surges format the Bay of Bengal.
  • Snow melt from the Himalayans Features of the Sundarbans delta:
  • Extensive network of interconnecting smaller channels called Khals drain the the land when the tide goes out
  • Low flat land from the deposits
  • Large channels running north to south Plants and animals:
  • Coastal zone occupying the world’s largest delta
  • Sediment deposited by three of the world’s great rivers, the Ganges, Brahmaputra and Meehan
  • Made of mangrove and swamps
  • Known for its wide range of animals, including 260 bird species, the bengal tiger and other threatened species such as the estuarine crocodile and the Indian python.
  • Kingfisher and fish that live in the canals
  • Deer and monkeys Risks Responses
  • Wildlife tiger - Local initiatives - Reduction in the number of fish available meaning fishermen have to go deeper into the forest - Began shrimp farming: nursery farms for baby shrimp which isn’t good for biodiversity
  • Competing with neighbouring villages that sell the fish abroad - Re planting mangrove forests - Over-farming of shrimp which destroy other animals and eco systems - This changes soils and water quality which kills the fresh-water fish - Rice paddy’s destroyed due tot the salt water from the shrimp farms
  • Government owned lands that are prop tested for the use by local people
  • Mangrove forest destroyed due to the high levels of salt this means that the coastline is losing its protection
  • Wetland habitats protected
  • 1 million people depend on the mangrove forest meaning that there are large amount of - NGOs run educational programs

deforestation

  • This means that there are more tiger attacks as villages are near the forest edges
  • Natural: coastal flooding, cyclones, high levels of salinity in the soil, instability of the islands, accessibility and remoteness
  • Human: over-exploration of coastal resources from vulnerable habitats, conversion of wetlands to intensive agriculture and settlements, destructive fishing techniques, lack of awareness of the environmental and economic importance of the region, resource-use conflicts and lack of awareness of coastal issues by decision makers

Opportunities from the living in the Sundarbans:

Goods:

Mangroves provide timber for construction, firewood and furniture. Rich ecosystems of mangroves provide the local population with fish, crabs, honey and Nila palm leaves for roofing and baskets.

Services:

Tourists want to visit the mangroves and wildlife. Flat fertile land is ideal for growing crops, particularly rice. A power plant using water or solar might provide power for people. Mangroves are a natural defence against flooding; they absorb excess water and make it easier to live and grow crops. Cargo ships transport goods such as oil and food in for people to buy and trade. Mangroves protect against coastal erosion – the roots bind soil together.

Risk of living in the Sundarbans:

Natural:

Flooding can lead to salinisation making it hard to grow crops. Low-lying land is at risks from rising sea levels due to global warming. Dangerous animals can attack humans.

Humans:

Lack of fresh water for drinking because water is diverted from rivers for irrigation and agricultural use. Growing population means more fuel and farmland is needed, so mangrove forests are being removed which further increases the risk of flooding. Lack of employment and income opportunities. Only 20% of houses have electricity which means communication is difficult and many residents don’t receive flood warnings. Access is difficult with few roads, many of which are poor quality. It’s difficult for residents to receive healthcare and education.

Human response to challenges of the Sundarbans:

Resilience:

Cyclones shelters and early warning systems: Use of open access natural resource: Laws: Legal frameworks and services provided by a number of formal government and NGO organisations, alongside the traditional laws help to manage the region.

Adapting to the Sundarbans:

Salt-resistant rice crops: New rice varieties that can survive being submerged in sea water for 2 weeks Increase tourism Sustainable farming and ecotourism NGO run education programmes to encourage farmers to return to traditional ecologically-friendly methods. Organisations like USAID train communities to become resilient to future climate shocks, including improving agriculture techniques. NGOs- education and disaster preparation: They provide education and training about community level preparation for natural disasters – planning and preparation can help reduce impacts. Build houses and cyclone shelters on stilts Built multipurpose cyclone shelters equipped with communication equipment, which also serve as primary school equipment. They built 100 shelters in the coast between 2011 and 2015, 750 were proposed in 2019. NGOs – latrines, sanitation, rainwater storage Build latrines on higher ground and educate communities about water and sanitation. Install storage tanks for rainwater in areas at most risk from indundation by salt water. Distribute water tight containers to store important belongings