The pie chart presents the factors contribute to deterioration in agricultural land. The table demonstrates how the three major causes, namely deforestation, over-cultivation and over-grazing, affected three areas including North America, Europe and Oceania in 1990s. At first glance, Europe was suffered the most (23% of degraded land), compared to North America(5%) and Oceania(13%).
From the pie chart, it can be seen that over-grazing(35%) is the major contributor to land degradation. Deforestation and over-cultivation have similar percentages, with 30% and 28% respectively. The rest of the pie belongs to other reasons.
Moving to the table, most of affected land in Europe was due to deforestation(9.8%) and cultivation(7.7%). By comparison, These two factors are only attributed to small proportions in Oceania, which had only 1.7% in total. While over- cultivating was responsible for 3.3% out of the 5% of deteriorated land in North America. Over-grazing accounted for the largest percentage in Oceania(11.3%) and that is twice larger than the percentage in Europe.
In conclusion, Europe is the region that are facing serious land degradation and most of the causes are deforestation and over-cultivating.