Causes of Worldwide Land Degradation
This chart illustrates the causes of agricultural land productivity including three areas in 1990s.
The vast land degradation mainly caused by over-grazing with using 35% of the worldwide land. A third of the land was deforestation, and more than a quarter was for cultivating. The largest degraded land was happen in the Europe with 23% of the total land. Europe land degradation mainly caused by deforestation. In the oceania (including Australia and New Zealand), total degradated land was 13%, with 11,3% of the land using for grazing and 1,7 due to deforestation, none of the land was using for cultivation in this region. On the other hand, degradation in North America due to over-caltivation (with 3,3% of total tand).
Overall, the worldwide degradation land in 1990 mainly cause d by over-grazing, and the region with the vastest degradation land was in Europe. In contrast, the fewest degradation land was in the North America.