Read the notes, then try the practice. It adapts as you go.When you're ready.
Session Length
~17 min
Adaptive Checks
15 questions
Transfer Probes
8
Forestry is the science, art, and practice of managing forests, tree plantations, and related natural resources. It encompasses a broad range of activities including the planting, maintaining, conserving, and harvesting of trees for economic, ecological, and social benefit. Forestry professionals, known as foresters, apply principles from biology, ecology, economics, and engineering to sustain forest ecosystems while meeting the growing demands of human populations for wood products, clean water, wildlife habitat, and recreational opportunities.
The history of forestry stretches back centuries, with early systematic practices emerging in 18th-century Germany and France, where concerns about timber shortages prompted governments to regulate harvesting and promote replanting. Modern forestry has evolved significantly beyond simple timber production to embrace the concept of sustainable forest management, which seeks to balance ecological health, economic viability, and social equity. Key disciplines within forestry include silviculture (the cultivation of forest trees), dendrology (the study of trees and woody plants), forest ecology, forest economics, and forest engineering.
Today, forestry plays a critical role in addressing global challenges such as climate change, biodiversity loss, deforestation, and rural economic development. Forests cover approximately 31 percent of the Earth's land area and serve as major carbon sinks, absorbing roughly 2.6 billion tonnes of carbon dioxide annually. Sustainable forestry practices, including selective logging, reforestation, agroforestry, and community-based forest management, are essential tools for mitigating greenhouse gas emissions while providing livelihoods for an estimated 1.6 billion people worldwide who depend directly on forest resources.
One step at a time.
The practice of controlling the establishment, growth, composition, health, and quality of forests to meet diverse needs and values. It is the applied ecology of forest management, guiding decisions about when and how to plant, thin, and harvest trees.
Example: A forester uses shelterwood cutting to gradually remove mature trees over several years, allowing natural seedlings to establish under partial shade before the final overstory trees are harvested.
A dynamic and evolving concept that aims to maintain and enhance the economic, social, and environmental values of all types of forests for the benefit of present and future generations. It is guided by criteria and indicators at national and international levels.
Example: A forest management plan limits annual timber harvest to the volume of new growth each year, ensuring that the forest's productive capacity is never diminished over time.
The natural or intentional restocking of existing forests and woodlands that have been depleted, usually through deforestation, logging, or natural disturbance such as wildfire. It differs from afforestation, which is planting trees on land that was not previously forested.
Example: After a large wildfire destroys a pine forest, a government agency plants 500,000 seedlings of native tree species across the burned area to accelerate forest recovery.
A systematic collection of data on the quantity, quality, and condition of forest resources, including tree species composition, diameter, height, volume, age, and health. Modern forest inventories increasingly use remote sensing technologies such as LiDAR and satellite imagery.
Example: A national forest service conducts a decadal inventory using sample plots across the country to estimate total standing timber volume and track changes in forest health.
The scientific study of trees, shrubs, and other woody plants, including their taxonomy, morphology, ecology, and distribution. Dendrology is foundational to forestry because proper species identification is essential for effective forest management.
Example: A dendrologist identifies an unknown tree specimen in a tropical forest by examining its leaf arrangement, bark texture, and fruit characteristics, classifying it within the Dipterocarpaceae family.
A harvesting method in which all or nearly all trees in a designated area are removed in a single operation. While efficient and economically advantageous for certain species that require full sunlight for regeneration, it is controversial due to its visual impact and potential ecological consequences.
Example: A timber company clear-cuts a 40-hectare stand of even-aged Douglas fir, then replants the site with seedlings the following spring, mimicking the natural stand-replacing disturbance regime of that forest type.
A land use management system in which trees or shrubs are deliberately integrated with agricultural crops and/or livestock on the same land, combining ecological and economic benefits. It includes practices such as alley cropping, silvopasture, and windbreaks.
Example: A farmer in Central America plants rows of nitrogen-fixing Inga trees between rows of coffee plants, providing shade for the coffee while enriching the soil and producing firewood.
The natural process by which a forest ecosystem changes in species composition and structure over time following a disturbance. Primary succession occurs on bare substrate, while secondary succession occurs on land where a forest previously existed.
Example: After a field is abandoned from agriculture, grasses and shrubs colonize first, followed by pioneer tree species like birch and aspen, and eventually shade-tolerant species like maple and beech dominate the mature forest.
More terms are available in the glossary.
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