What are the effects of deforestation on the environment?

Deforestation affects more than the trees that are cut down. It changes habitats, releases stored carbon, and can disrupt the systems that keep soil and water healthy.

• Wildlife loses habitat: Forest clearing can shrink and fragment habitats, making it harder for species to find food, shelter, and places to breed. Some populations decline or disappear locally.
• More carbon enters the atmosphere: Trees and forest soils store carbon. When forests are burned or cleared, some of that carbon is released as greenhouse gases, while fewer trees remain to absorb carbon dioxide.
• Soil becomes more vulnerable: Without roots and leaf cover to hold it in place, soil can erode. This can wash away nutrients and send sediment into rivers and lakes.
• Water cycles can shift: Trees return moisture to the air through transpiration. Large-scale forest loss can change local rainfall patterns and increase runoff, which may contribute to flooding and drier conditions at different times.
• People can be affected too: Communities that depend on forests for food, livelihoods, and cultural practices may lose access to those resources.

The severity depends on how much forest is removed, where it happens, and what replaces it. Clearing a diverse tropical forest, for example, can have different consequences from carefully managed tree harvesting in a temperate forest.