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DEFORESTATION:  Case -- New Zealand vs South Korea (Gemini Search April 2026

Deforestation in New Zealand is both a driver of and a casualty of climate change. Historically, forest cover has plummeted from 85% to roughly 31%, turning massive carbon reservoirs into emission sources. Today, while large-scale clearing has slowed, the remaining forests face heightening threats from the very climate instability they help mitigate. [1, 2, 3, 4, 5]

1. Deforestation’s Impact on Climate Change

The removal of New Zealand's forests directly accelerates global warming by releasing stored greenhouse gases and reducing the land's future capacity to absorb them. [1, 2, 3]

• Carbon Emissions: Native forests store an average of 850 tonnes of \(CO_{2}\) per hectare. When these forests are cleared, this carbon is released; for example, in 2025 alone, New Zealand lost 4.1 kha of natural forest, equivalent to 1.9 million tonnes of \(CO_{2}\) emissions.

• Loss of Carbon Sinks: Forests act as "carbon sinks," absorbing \(CO_{2}\) through photosynthesis. Deforestation reduces the total area available for this process, making it harder for New Zealand to meet its net-zero emissions targets.

• Altered Local Climate: Forests provide a cooling effect through shade and evapotranspiration. Clearing them leads to higher local temperatures and less stable local weather patterns. [1, 2, 3, 4, 5]

2. Climate Change's Impact on New Zealand Forests

A warming world creates "cascading risks" that threaten the health and survival of existing New Zealand forests. [1]

• Increased Fire Risk: Drier conditions and higher mean temperatures have placed the forestry sector at extreme risk of increased fire weather.

• Erosion and Storm Damage: Extreme weather events, such as high winds and intense rainfall, cause soil erosion and "forest dieback". Without tree roots to stabilise the soil, mountainous regions are increasingly prone to landslides and flash floods.

• Pests and Diseases: Warmer temperatures facilitate the spread of invasive pests and pathogens, which can decimate native species that are already at their climatic limits. [1, 2, 3, 4, 5, 6]

3. Mitigation and the Emissions Trading Scheme (ETS)

To combat these cycles, New Zealand uses policy tools to discourage deforestation and encourage new growth. [1, 2, 3]

• Financial Penalties: Under the New Zealand Emissions Trading Scheme (ETS), landowners who deforest pre-1990 forest land are generally liable to pay for the resulting emissions, typically surrendering 1 New Zealand Unit (NZU) for every tonne of \(CO_{2}\) released.

• Incentivising Afforestation: High carbon prices (e.g., above $15/NZU) have been shown to significantly increase the rate of new forest planting (afforestation), which helps offset national gross emissions. [1, 2, 3]

South Korea is a unique global case: having successfully reversed near-total deforestation in the 20th century, its forests are now a critical climate shield but are increasingly vulnerable to climate-driven disasters. [1, 2, 3, 4, 5]

1. Deforestation’s Impact on Climate Change [1]

While massive deforestation is no longer a primary driver of emissions in South Korea, the loss of existing forest stock remains a concern for its carbon goals. [1]

• Carbon Sink Degradation: South Korea's forests cover about 63% of its land and sequestered approximately 45.6 million tons of \(CO_{2}\) in 2018. However, this absorption capacity is declining as forests age and are lost to development or disasters.

• Biomass Emissions: Recent research into the biomass power sector found that burning wood fuels (often imported) emitted roughly 11 million tonnes of \(CO_{2}\) in 2022, potentially negating government commitments to enhance forest carbon sinks.

• Urbanisation Pressures: Continued conversion of private forestland into urban areas contributes to increased \(CO_{2}\) emissions. Simulations suggest that purchasing private land for protection could prevent the release of up to 17.4–19.2 million tons of \(CO_{2}\). [1, 2, 3, 4, 5]

2. Climate Change's Impact on South Korea's Forests

Climate change is turning South Korea’s hard-won forests into high-risk "tinderboxes". [1]

• Worsening Wildfires: Record-breaking fires in March 2025, fueled by temperatures 10°C above average, were found to be twice as likely due to human-caused climate change. Burned areas from 2020 to 2024 were seven times larger than in the previous five-year period.

• The "Conifer Risk": Roughly half of South Korea’s forests are highly flammable conifers (pine species). As heatwaves and droughts intensify, these monoculture-heavy areas allow fires to spread rapidly, threatening both biodiversity and urban interfaces.

• Geological Hazards: Increased extreme rainfall is driving "debris flow hazards" (landslides) in mountainous urban environments, as climate-stressed vegetation fails to stabilise soil as effectively as it once did. [1, 2, 3, 4]

3. Future Strategy: "Climate-Proofing"

South Korea is shifting from simple reforestation to climate-proofing its landscapes. [1]

• Sustainable Management: New standards, like the FSC Interim Forest Stewardship Standard for Korea (effective May 2026), aim to modernise governance and reduce wildfire risks through better forest structure management.

• Species Diversification: Forest managers are being urged to replace flammable conifers with broadleaf species that naturally restrain fire spread. [1, 2, 3, 4]