The pie chart provides the information about the major sources of land deterioration all over the world.
The table illustrates how the lands of North America, Oceania and Europe were influences by these sources in the period of 1990s.
According to the provided data, a region that suffered most was Europe.
Its land degraded by 23% in 1990s and the main reason for such a change was deforestation that made up almost 10%.
Over-cultivation and over-grazing accounted for 7.7% and 5.5% respectively.
Oceania’s land productivity fell down by 13%.
Interestingly, the most considerable cause was over-grazing (slightly above than 11%).
In contrast, overall land degradation in North America was quite negligible.
In total it decreased by 5% with over-cultivation being the biggest proportion of losing land productivity (just over 3%).
Overall, grazing was the most significant reason for worldwide land degradation in 1990s that accounted for 35%.
Deforestation and cultivation made up 30% and 28% respectively.
Moreover, there were other reasons for this phenomenon of land deterioration.
May 2017
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