The pie chart shows the main reasons why agricultural land become less productive. The table shows how these causes affected three regions of the world during the 1990s

The pie chart presents the reasons behind agricultural

land

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deterioration on the planet during the 1990s and the table compares all factors contributing to the phenomenon among three regions. It is obvious that the agricultural

land

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degraded on the earth is mainly attributed to over-grazing, deforestation and over-cultivation, and Europe suffers more than other continents combined. In terms of causes resulting in

land

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degradation, more than one-third of the acreage is degraded by the overconsumption of husbandry. It is almost the same for deforestation and farming, which causes 30% and 28% of degraded

land

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.

By contrast

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, only 7% of the

land

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is resulted from other contributors. With regard to areas suffering from

land

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degradation, 23% of

land

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has been degraded in Europe, in which, the loss of forests accounts for 9.8%, followed by the impacts of agriculture and grazing, at 7.7% and 5.5% each.

Furthermore

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, husbandry makes up for the majority of

land

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degraded in Oceania (11.3%),

while

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other factors are almost negligible.

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,

although

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3.3% of the acreage under cultivation has been degraded by cultivation plants, the

overall

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land

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degraded in North America is the least proportion compared with the other regions.