Question

(5 pts) canadian shield – what are the causes and effects of deforestation? how is extracting minerals causing an environmental problem? what is the government doing to solve the problem?

Explanation:

1. Causes of Deforestation in the Canadian Shield:

• Logging for timber (softwood trees like pine are valuable for construction/paper).
• Mining operations clearing land for access and infrastructure.
• Agricultural expansion (small-scale, for local farming).
• Urban/industrial development in populated fringe areas.

1. Effects of Deforestation:

• Loss of habitat for boreal species (caribou, wolves, songbirds).
• Soil erosion (tree roots no longer hold soil in place).
• Reduced carbon sequestration, worsening climate change.
• Disruption of Indigenous traditional lands and practices.

1. Mining as an Environmental Problem:

• Clears vegetation, destroying habitat and increasing erosion.
• Acid mine drainage leaches toxic metals (lead, mercury) into rivers/lakes, poisoning aquatic life and contaminating drinking water.
• Disturbs permafrost in northern areas, releasing stored greenhouse gases.

1. Government Solutions:

• Enforced sustainable logging regulations (e.g., replanting requirements, limits on clear-cutting).
• Mine reclamation laws (mandating restoration of mined areas post-operation).
• Protected area expansion (e.g., creating provincial/ national parks to preserve intact forest).
• Collaborative management with Indigenous communities for land stewardship.
• Monitoring of water quality near mining sites to prevent toxic runoff.

Answer:

Causes of Deforestation in the Canadian Shield:

• Commercial logging for softwood timber
• Land clearing for mining infrastructure
• Small-scale agricultural expansion
• Urban/industrial development in fringe regions

Effects of Deforestation:

• Loss of boreal wildlife habitat
• Increased soil erosion and nutrient loss
• Reduced carbon storage, amplifying climate change
• Disruption of Indigenous land use and cultural practices

Why Extracting Minerals Causes Environmental Harm:

• Vegetation removal destroys ecosystems and accelerates erosion
• Acid mine drainage releases toxic heavy metals into aquatic systems, poisoning wildlife and contaminating water supplies
• Permafrost disturbance in northern regions releases greenhouse gases

Government Actions to Address the Issues:

• Impose sustainable logging rules (replanting, limited clear-cutting)
• Enforce mine reclamation requirements to restore disturbed land
• Expand protected areas and national parks to preserve intact forest
• Partner with Indigenous groups for co-management of traditional lands
• Conduct regular water quality monitoring near mining operations to mitigate toxic runoff