The pie chart and table provided illustrate the primary causes of agricultural land degradation and the extent of this problem in North America, Europe and Oceania during the 1990s.
A general overview of the data reveals that over-grazing is the most significant cause of land degradation globally, while deforestation is the least. Moreover, the three regions mentioned experienced different levels of land degradation, with Europe being the most affected.
Focusing on the pie chart, over-grazing accounted for 35% of worldwide land degradation, followed by deforestation and over-cultivation, which were responsible for 30% and 28% respectively. The remaining 7% was caused by other reasons. Turning to the table, Europe was the most severely impacted region with 23% of its agricultural land degraded, primarily due to deforestation.
In contrast, both North America and Oceania had lower percentages of land degradation, 5% and 13% respectively. In North America, over-cultivation was the main cause, while in Oceania, over-grazing was the most significant factor. Interestingly, deforestation did not contribute to land degradation in Oceania during this period.
