The given pie chart provides the information of the predominant reason why agricultural land encounters less productive. And the table illustrates the percentage of causes affected of land degradation in three region, namely, North America, Europe, and Oceania during the 1990s. Overall, the main of land degradation is over-grazing in worldwide. However, each regions witnessed the percentage in varies causes, while Europe showed the total land degraded was highest.
It is clear that over-grazing, deforestion play major roles in reducing the production, which are 35%, and 28%, respectively. It is over-cultivation, however, it showcases next issue in land degradation, in 28% of total. Moverover, 7% involves from other causes.
On the other hand, three regions emerge the proportion of each major effects from the table. The North America land degraded by over-cultivation was 3.3%, by over-grazing was 1.5%, and by deforestation was 0.2%, respectively and total was 5%. While Europe degraded from deforestation was 9.8%, over-cultivation was 7.7%, over-grazing was 5.5%, and total, 23%. Oceania’s land degradation caused by over-grazing was 11.3%, deforestation was 1.7% and non-over-cultivation was contributed, and the total was 13%.