Geography · Grade 8 · People and the Environment · Term 3

Deforestation and Land Use Change

Students analyze the causes and consequences of deforestation, desertification, and other land use changes.

• Ontario Curriculum Expectations
• ON: Global Settlement: Patterns and Sustainability - Grade 8
• CCSS.ELA-LITERACY.RH.6-8.3

About This Topic

Climate change is the defining geographic challenge of our time. In this topic, students examine the evidence of a changing climate, from melting glaciers to shifting weather patterns, and how these changes are impacting different regions of the world. In the Ontario curriculum, this unit emphasizes the concept of 'adaptation' and how human responses vary based on wealth, technology, and geography.

Students also explore the disproportionate impact of climate change on vulnerable populations, including northern Indigenous communities in Canada where the climate is warming at twice the global rate. This topic encourages students to use spatial data to predict future trends and brainstorm innovative solutions for resilience. Students grasp this concept faster through structured discussion and peer explanation of climate data and adaptation strategies.

Key Questions

1. Analyze the primary drivers of deforestation in different geographic regions.
2. Evaluate the long-term environmental and social consequences of large-scale land use change.
3. Propose sustainable land management practices to mitigate deforestation and desertification.

Learning Objectives

• Analyze the primary drivers of deforestation, such as agricultural expansion and logging, in specific geographic regions like the Amazon rainforest or Southeast Asia.
• Evaluate the long-term environmental consequences of land use change, including soil degradation, biodiversity loss, and altered water cycles.
• Propose sustainable land management practices, such as agroforestry or responsible forestry, to mitigate deforestation and desertification.
• Compare the social impacts of land use change on different communities, considering factors like displacement and economic effects.
• Synthesize information from case studies to explain the interconnectedness of deforestation, climate change, and human well-being.

Before You Start

Human Impact on the Environment

Why: Students need a foundational understanding of how human actions affect natural systems before analyzing specific issues like deforestation.

Ecosystems and Food Webs

Why: Understanding how different species interact within an ecosystem is crucial for evaluating the consequences of biodiversity loss due to habitat destruction.

Map Skills and Geographic Regions

Why: Students must be able to locate and describe different geographic regions to analyze the varied drivers and impacts of deforestation globally.

Key Vocabulary

Deforestation	The clearing, removal, or destruction of forests or stands of trees, which is then converted to non-forest use.
Desertification	The process by which fertile land becomes desert, typically as a result of drought, deforestation, or inappropriate agriculture.
Land Use Change	The alteration of land cover and the services it provides, often due to human activities like urbanization, agriculture, or resource extraction.
Biodiversity Loss	The decline in the number and variety of species in a particular habitat or ecosystem, often exacerbated by habitat destruction from deforestation.
Sustainable Land Management	Practices that aim to conserve land resources while meeting present and future needs for food, fiber, and other ecosystem services.

Watch Out for These Misconceptions

Common Misconception

Climate change and 'weather' are the same thing.

What to Teach Instead

Weather is what happens daily, while climate is the long-term pattern. A group activity comparing a single day's temperature to a 50-year average helps students understand that one cold day doesn't disprove global warming.

Common Misconception

We can't do anything to stop climate change anymore.

What to Teach Instead

While some changes are already happening, rapid action can prevent the worst outcomes. Highlighting successful adaptation and mitigation projects in a gallery walk can help move students from 'climate anxiety' to 'climate action.'

Active Learning Ideas

Inquiry Circle: Adaptation Profiles

Small groups are assigned a region (e.g., a low-lying island nation, a drought-prone farming region, or the Canadian Arctic). They research one specific way that region is adapting to climate change (e.g., sea walls, new crop varieties, or changing building codes) and present it to the class.

50 min·Small Groups

Simulation Game: The Climate Migration Map

Students use maps showing projected sea-level rise or desertification and 'move' population markers to safer areas. They must discuss the challenges of this migration, such as where people will go and how they will be supported, creating a 'future map' of their region.

45 min·Small Groups

Think-Pair-Share: Individual vs. Systemic Change

Students are given a list of actions to combat climate change (e.g., biking to school, passing a carbon tax, planting trees). They discuss in pairs which actions are most effective and whether individual or government action is more important. Pairs share their 'top three' actions.

20 min·Pairs

Real-World Connections

• Forestry professionals, such as foresters and conservation scientists, work for government agencies like Natural Resources Canada or private companies to manage forest resources sustainably and combat illegal logging.
• Urban planners in rapidly growing cities globally must consider land use change, balancing the need for housing and infrastructure with the preservation of green spaces and natural habitats.
• Agricultural companies are increasingly exploring sustainable farming techniques, like crop rotation and reduced tillage, to prevent soil degradation and desertification in regions prone to drought.

Assessment Ideas

Discussion Prompt

Pose the question: 'Imagine you are advising a government on how to reduce deforestation in a region heavily reliant on logging. What are two specific policies you would recommend, and what are the potential challenges in implementing them?' Facilitate a class discussion where students share and debate their ideas.

Quick Check

Provide students with a short article or infographic detailing a specific case of land use change (e.g., palm oil expansion in Borneo). Ask them to identify: 1. The primary driver of the land use change. 2. One environmental consequence. 3. One social consequence.

Exit Ticket

On an index card, have students write: 1. One cause of deforestation they learned about today. 2. One sustainable practice that could help prevent it. 3. One question they still have about land use change.

Frequently Asked Questions

What is the difference between mitigation and adaptation?

Mitigation refers to actions taken to reduce or prevent the emission of greenhouse gases (e.g., switching to solar power). Adaptation refers to actions taken to adjust to the effects of climate change that are already happening or expected (e.g., building sea walls or developing drought-resistant crops).

How is climate change affecting Canada's North?

The Arctic is warming much faster than the rest of the planet. This is causing permafrost to melt, which damages buildings and roads, and sea ice to disappear, which affects traditional Indigenous hunting and travel. It also opens up new shipping routes and access to resources, creating new geographic and political challenges.

Who is most vulnerable to climate change?

People living in low-lying coastal areas, small island nations, and regions that already struggle with poverty or food insecurity are the most vulnerable. These groups often have the fewest resources to adapt to changes like rising sea levels or extreme weather.

How can active learning help students understand climate change?

Active learning, such as simulating climate-driven migration, makes the future impacts of climate change feel more real and urgent. By investigating adaptation strategies in a group setting, students focus on solutions and resilience rather than just the problems, which is more helping and pedagogically effective.