The pie chart and table illustrate some causes that lead to degradation of agriculture land and the percentages of land that were lost because of some reasons including in deforestation, overcultivation, overgrazing in different regions during the 1990s.
Overall, the most popular reason leading to land degradation was overgrazing and this also caused the loss of land the most in Oceania. However, the highest percentage of land lost was seen in Europe.
As can be seen in the pie chart, 35 % of land was lost by grazing activities in the world, which accounted for the highest percentage among reasons, followed by deforestation with 30%. Over-cultivation also contributed to land degradation, which was marginally lower than deforestation 2%. Other reasons constituted the minority of 7%.
Regarding causes of land degradation by region, total land degraded was highest in Europe with 23%, following by Oceania with 13%, and only 5% of land in North America was lost. Most of land in Oceania was degraded by over grazing with 11,3%, which is ten times as much as deforestation, while 3.3% of land was lost in North America , doubling land lost by grazing activities. Interestingly, land degraded in Europe because of all reasons including deforestation (9.8%), over cultivation (7.7%) and grazing activities (5.5%).