The unit of vegetation is defined as the type of forest with the characteristic external appearance and structure. Forecasters are climate, soil, plant and past developmental activities (including biological interventions). Environmentally forests of Bangladesh are divided into several types. These include tropical moist evergreen forests, tropical evergreen forests, tropical moist deciduous forests, freshwater wetlands, parabens or mangrove forests.

Wood is the main fuel for cooking and other domestic requirements. It is not surprising that population pressure has had an adverse effect on the indigenous forests. By 1980 only about 16 percent of the land was forested, and forests had all but disappeared from the densely populated and intensively cultivated deltaic plain. Aid organizations in the mid-1980s began looking into the possibility of stimulating small-scale forestry to restore a resource for which there was no affordable substitute.