Natural forests, also known as native forests, are ecosystems that have developed over a long period without direct human intervention. They consist of a variety of tree species, along with diverse plants, animals and microbial communities that have evolved together in a specific geographical region.

Natural forests develop over time through the interaction of climate, soil, and other environmental factors. This type of forest typically exhibits high biodiversity that supports a complex web of life that consists of various plant and animal species that have over time adapted to the local ecological conditions.

The Agency manages 416 National Forest Reserves (NFRs) with approximated total area of 9,248,344 ha. TFS is mandated to manage forests on general lands covering about 2,405,000 hectares. Management of Reserves Natural Forests in Tanzania was guided by an approved Management plan Most of Tanzania’s major rivers originate from Natural forest reserves and other forested areas including the Ruaha, Wami, Pangani and Sigi rivers