The pie chart and a table illustrates the causes for degradation of agricultural land and their effects in a three main regions worldwide in 1990.
Overall the reason which is most responsible is over-grazing followed by deforestation, over-cultivation. There are some other reasons which also contributes in this process. The region which faces the most consequence due to these causes is Europe whose 23% of land is degraded, then there are the regions like Oceania with 13% and North America with 5%.
In term of the causes over-grazing leads the chart with 35% of total that damages about 11.3% of land in Oceania region. While, Europe is the second most effective region by this whose 5.5% of land destructed, then there is North America region whose 1.5% of land is degraded. After, over-grazing deforestation contributes with 30% which results in a loss of agricultural grounds of Europe, Oceania and North America regions with 9.8%, 1.7% and 0.2% respectively.
Similarly, over-cultivation takes part by 28% of the chart which effects Europe region with 7.7% of its land and North America region by 3.3%. There are some other reasons which covers 7% of a chart.
