The pie chart illustrates the rates of primary causes that effect land making it less fertile, while the information given in the table makes comparisons of the share of the main reasons which were contributors to degradation of land in certain parts of the world, namely North America, Europe and Oceania during 1990s.
In general, what stands out from the pie chart is that over-grazing is a a dominant factor of land deterioration throughout the world. It is clear from the table that over-grazing was the most notable reason which made the land less productive in Oceania, whilst Europe mostly suffered from over-cultivation and deforestation in the 1990s.
Focusing on the pie chart first, the percentage of degradation from over-grazing takes the lead among others, comprising just over a third, whilst the figure for a deforestation ranked second, forming just under a third. Moreover, 28% of damage was due to over-cultivation, while other factors have the share of 7%.
As for the table, Europe ranked first in terms of land which was deteriorated by deforestation, accounting for 9,8%, whereas the figures for over-cultivation and over-grazing were 7.7% and 5.5%, respectively. Meanwhile, over-grazing and deforestation in Oceania formed 11.3% and 1.7%, whilst over-cultivation was not subject to any harm, standing at zero. With respect to North America, the shares of deterioration by over-cultivation was two times more than over-grazing, constituting 3.3% and 1.5% , correspondingly. The total land degradation was highest in Europe, farming 23% in the 1990s.