Comparisn Between Growth Rates of Some Indigenous and Exotic Tree Species
1992
Berhane Habte | Mebrate Mihretu (Forestry Research Center, Addis Abeba (Ethiopia))
Tree species trials have been established in a number of sites in Ethiopia since 1975, mainly emphasizing the introduction of fast-growing exotics, both softwood and hardwood, as well as multipurpose tree/shrub species. In this program, silviculture of indigenous species has also been included. The results of this study imply that the accelerating loss of natural forests and its consequences can be halted and eventually reversed by planting fast-growing trees. Exotic tree species have shown faster growth rate, high yield per hectare, shorter rotation, and easy establishment and management. The study also revealed that seeds of indigenous trees germinate slowly and irregularly in both the laboratory and the nursery, while seeds of the exotic trees germinate rapidly and uniformly. The development in plantations of fast-growing exotic species in the Ethiopian highlands in quite imperative in order to enhance the natural forest protection and management and also to satisfy the wood requirement of the nation.
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Эту запись предоставил Ethiopian Institute of Agricultural Research