- Encroachment due to population pressure and need for more land for settlement and farming.
- Pests and diseases e.g. Aphids outbreak (1990’s) destroyed large areas of cypress forests.
- Forest fires especially during the dry season destroy bamboo and conifers which ignite easily.
- Game damage – Increasing population of grazers such as elephants, and overgrazing by wild animals cause damage to young forest trees.
- Overexploitation through logging, charcoal burning, wood fuel lead to a scarcity of forest products.
- Excisions refer to the allocation and conversion of forest land into private land. Tracts of land have been excised to create room for agricultural show grounds and Nyayo Tea Zones.
- Poor management of forest resources for example delay in replanting trees after logging leads to the harvesting of immature trees or may necessitate importation of timber and other forest products. Kenya Power and Lighting Company imports poles from Tanzania.