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Deforestation: Results
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The loss of ground cover due to deforestation resulted in flash floods during heavy rainfall, leading to soil erosion. "That is the start of desertification," said Beneah Odhiambo, a professor of geography at Moi University in western Kenya.
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Patterns of deforestation (size, shape and distribution) are ... variable. For example, household-level agriculture is typically restricted to within a short distance of roads, and the average size of the disturbed area is small. In contrast, industrial-level or plantation agriculture results in larger clearings, but less forest fragmentation, at a much more variable distance from main roads.
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This is a very complex study that aims to analyze the process of land cover change following deforestation, along a fertility gradient from eutrophic to oligotrophic conditions. That is, from poor soils to less poor soils. Its long-term objective is to discover areas of rapid regrowth and analyze through field studies and multitemporal satellite imagery, the different impact of land use, soil type and size of area cleared on secondary succession. The results could be used to make environmental preservation policies that draw on local strategies, rather than documenting the extent and effects of deforestation.
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The highest rates of deforestation were located at the forest-savanna interfaces where forest occupies a small area and savannas dominate the landscape. Though the absolute area of deforestation is small and the contribution of these areas to global warming limited, forest clearing is resulting in the rapid disappearance of riparian forests that constitute the last bastions of forest-dependent plant and animal species.
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Continual progress has been made during the past fifty years with regard to identifying deforestation and estimating the amount of deforested areas, thanks in particular to progress in remote sensing technology. The early phase of unlimited fascination with satellite and radar remote sensing in the 1970s and 1980s has fortunately given way to a more lucid awareness of the limitations of these tools, although considerable damage had already been done during the intervening period, namely, in the adoption of classifications and results that proved to be unusable by managers (and could not be applied to adjacent areas) and the reduction, up to total neglect, in the acquisition of "groundtruth" data and in field inventories.
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