By M. Bonell, L. A. Bruijnzeel
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Extra info for Forests, Water and People in the Humid Tropics: Past, Present and Future Hydrological Research for Integrated Land and Water Management (International Hydrology Series)
Sample text
DRIGO existing croplands. The process of forest degradation is represented mainly by the expansion of the area of forest affected by traditional shifting cultivation (long fallow shifting cultivation), that encroached on previously dense or undisturbed forest. An equal amount of the long fallow forest class was converted to short fallow and, a little less, to other land cover, reflecting a sequence of progressive forest depletion as a direct effect of the growing population and related needs for farm land.
The main discrepancies relate to Africa’s forest area and the rates of change for Africa and Asia (higher rates obtained by FRA 2000) and Latin America (lower rate according to FRA 2000). The sudden dominant role of Africa in tropical deforestation should be further investigated, because the existing country data for this region are often very poor. ) are not based on consistent time series but only on single-date statistics, often quite old, and expert opinions. Moreover, there seems to be little evidence of such high deforestation rates in Africa from the results of the independent surveys of tropical regions initiated by the FRA of 1990 and continued in 2000 and the TREES High Resolution Survey of the Humid Tropics.
The management of woodfuel resources and demand should be considered a major issue in energy planning processes in Africa. On the other hand, woodfuel consumption is a major contributor to total wood removal, accounting for around 92% of total African wood consumption and contributing to greenhouse gas emissions. Woodfuel use is therefore a major local and global environmental issue in Africa, and should be fully integrated into forestry planning and environmental protection processes. (FAO, 1999b).