Forestry is the science and practice of managing, conserving, and developing forests and other wooded areas. It combines biology, ecology, geography, economics, and social science to study and optimize the growth, health, and sustainability of forest ecosystems. Key areas of focus include:

1. Forest Ecology and Conservation: Understanding ecosystems to preserve biodiversity and maintain habitats for wildlife.
2. Forest Management: Planning and overseeing sustainable timber production, wildlife habitats, recreation, and watershed management.
3. Silviculture: Studying tree growth, health, and forest regeneration, including techniques like controlled burning, thinning, and replanting.
4. Soil and Water Conservation: Protecting and managing soil and water resources within forests to prevent erosion, maintain water quality, and support plant and animal life.
5. Forest Economics and Policy: Assessing the economic value of forest resources, creating sustainable policies, and balancing commercial interests with conservation needs.

Foresters use this knowledge to address challenges like deforestation, climate change, and forest fires.