Geography - Coasts - The Sundarbans
- Created by: hettie.gosss
- Created on: 08-06-19 17:51
View mindmap
- The Sundarbans - Bangladesh
- Sediment deposited by three of the world's largest rivers; The Ganges, Brahmaputra and Meghna.
- Coastal processes
- World's largest delta, extending over 10,000km2 of southern Bangladesh and India
- Tidal action is the primary natural process.
- Non-cohesive sediments like sand are washed out of the delta. Protection from the sand dunes, finer silts washed into the bay are deposited.
- Vegetation establishes itself.
- Equilibrium of the natural processes - very delicate.
- Wave action adds and shapes further deposits of sand to form islands.
- Well-developed network of inter-connecting river channels
- Coastal processes
- Challenges and opportunities
- Provide protection, maintenance, provision.
- Managed sustainably, it provides a wide range of goods and services.
- Mangrove forests are extremely important ecosystem.
- Over-exploitation of coastal resources / Destructive fishing.
- Many on the outside view it as uninhabitable.
- Coastal flooding / High levels of salinity in soils.
- Coastal erosion has not traditionally been a problem. But there are some problems.
- Human response to challenges
- Many populations have lived successfully.
- Significant protection and shelter against - storm, tsunamis, coastal erosion.
- One hectare of mangrove forest.
- Density of 30 trees per 0.01 hectares can reduce the force of tsunami by 90%.
- Forests have economic values.
- More resilient to disaster.
- Recent human pressures like deforestation could utilize a number of open access natural resources.
- Mitigation
- Good level of social capital.
- Threat of natural disasters means there has been a significant investment in infrastructure.
- Level of resilience provided by these livelihood assets may be decreasing as poverty increases.
- Assets - financial, human, social, natural and physical.
- Mitigation
Comments
No comments have yet been made