Introduction: Why Glaciated Landscapes Matter
Welcome to the final part of our journey through Topic 2A: Glaciated Landscapes and Change. So far, you have learned how glaciers move and how they carve out incredible landforms like cirques and U-shaped valleys. But why does this matter to us today? In these notes, we will explore the value of these landscapes, the threats they face from human activity and climate change, and how different players work to manage them.
Whether it is an active landscape (where ice is still present, like the Alps) or a relict landscape (where the ice melted long ago, leaving behind features like those in the Lake District), these areas are fragile and require careful protection. Let’s dive in!
1. The Value of Glaciated Landscapes (2A.10)
Glaciated and periglacial landscapes aren't just "pretty views"—they have deep intrinsic value. We can break this value down into three main categories:
Environmental Value
Glaciers are a vital part of the cryosphere. They act as a massive "global air conditioner" by reflecting sunlight back into space. They also hold about 70% of the world's fresh water. In many parts of the world, meltwater from glaciers provides the only source of water for farming and drinking during dry seasons.
Economic Value
Glaciated areas are huge money-makers for local and national economies:
• Tourism and Recreation: Activities like skiing, snowboarding, and hiking attract millions of visitors.
• Hydroelectric Power (HEP): The steep slopes and high-volume meltwater are perfect for generating renewable energy.
• Resource Extraction: Relict landscapes often contain valuable deposits of sand and gravel (glacial till and outwash) used in construction.
• Scientific Research: Ice cores act as a "time capsule," allowing scientists to study past climates.
Cultural and Spiritual Value
For many people, these landscapes are part of their identity. Indigenous groups, such as the Inuit in the Arctic, have cultures and traditions deeply tied to the ice. Others value these areas for "spiritual renewal" or as inspiration for art, poetry, and literature.
Quick Review: Value isn't just about money! It includes environmental health and cultural heritage.
2. Threats to Fragile Glaciated Landscapes (2A.11)
Because glaciated landscapes are often found in extreme environments, they are very fragile. This means they are easily damaged and take a long time to recover. There are several key threats:
Climate Change
This is the biggest threat to active glaciated landscapes. Rising global temperatures cause glaciers to retreat. If a glacier reaches a certain threshold (a tipping point), it may disappear entirely, disrupting water supplies and causing sea levels to rise.
Over-Tourism and Footpath Erosion
In popular areas like the Lake District (a relict landscape) or the Alps, thousands of hikers can wear away vegetation. This leads to soil erosion and makes the landscape look "scarred." Litter and pollution from ski resorts also damage local ecosystems.
Pollution and Resource Exploitation
As the ice melts in the Arctic, it becomes easier for companies (TNCs) to reach oil, gas, and minerals. However, an oil spill in a cold environment is a disaster because the oil decomposes much slower in freezing temperatures, causing long-term damage to wildlife.
Did you know? Some "relict" landscapes (where the ice is gone) are just as threatened as "active" ones because they are easier for people to build on and farm, which can destroy ancient glacial landforms.
3. Management of Glaciated Landscapes (2A.12)
Managing these areas is a balancing act. How do we allow people to use the land without destroying it? Geographers look at a spectrum of approaches.
The Management Spectrum
• Preservation: Protecting the landscape exactly as it is, often by banning all human activity (e.g., strictly protected nature reserves).
• Conservation/Sustainable Use: Allowing people to use the landscape (like for tourism or HEP) but in a way that doesn't damage it for future generations.
• Exploitation: Using the resources for maximum profit with little regard for the environment (the "business as usual" approach).
Key Players and Governance
Management involves many different players with different attitudes and actions:
• National Governments: They can pass laws (legislation) to create National Parks or limit CO2 emissions.
• International Organisations (IGOs): The Antarctic Treaty is a famous example where many countries agreed to use Antarctica only for peaceful, scientific purposes.
• NGOs (Non-Governmental Organisations): Groups like Greenpeace or the World Wildlife Fund (WWF) campaign to protect fragile areas from drilling and mining.
• Local Communities: They often want to protect their homes but also need jobs from tourism or industry.
Challenges to Management
Managing these areas is hard because of uncertainty. We don't always know exactly how fast the ice will melt or how much tourism a landscape can handle before it breaks. Different players often disagree—for example, a local business might want a new ski lift for profit, while a conservationist wants to protect the alpine flowers in that spot.
Summary and Key Takeaways
• Value: Glaciated landscapes are valuable for water (environmental), money (economic), and identity (cultural).
• Threats: Climate change is the primary threat to active ice, while tourism and development threaten relict landscapes.
• Management: There is a spectrum from total preservation to exploitation.
• Players: Governments, TNCs, and NGOs all have different views on how these landscapes should be used.
Top Exam Tip: When writing about management, always mention the "players." If you can explain why a local resident might have a different view than a global oil company, you are demonstrating great geographical thinking!