Certified Forester Practice Exam

How does reforestation contribute to climate change mitigation?

1. It increases greenhouse gas emissions from soil

2. It decreases biodiversity in the planted areas

3. It sequesters carbon dioxide and restores ecosystems

4. It promotes the use of fossil fuels for planting

The correct answer is: It sequesters carbon dioxide and restores ecosystems

Reforestation plays a crucial role in climate change mitigation primarily through its ability to sequester carbon dioxide, one of the main greenhouse gases contributing to global warming. As trees grow, they absorb carbon dioxide from the atmosphere during the process of photosynthesis. This captured carbon is then stored in the biomass of the trees (in their trunks, branches, leaves, and roots) as well as in the soil, which enhances overall carbon storage in terrestrial ecosystems. Additionally, reforestation helps to restore and improve ecosystems that may have been degraded or deforested, enhancing biodiversity. Restoring natural habitats promotes a diverse range of plant and animal species, contributing to ecological resilience and stability. Healthy ecosystems provide numerous services beyond carbon sequestration, including water regulation, soil preservation, and air purification. The other options highlight misconceptions about reforestation; for instance, it does not inherently increase greenhouse gas emissions from soil, nor does it promote fossil fuel use. In fact, the opposite is true, as reforestation initiatives typically aim to reduce reliance on fossil fuels and improve environmental health. Furthermore, reforestation efforts, when done correctly, actually contribute to increased biodiversity rather than diminishing it, making the chosen answer the most accurate reflection of the benefits of refore