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

The chart provides information about the lack of productivity in the agricultural sector and there is a table illustrating the reasons that affected North America,

Europe

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, and Oceania during the 1990s.

Overall

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,

it is clear that

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the primary cause of

land

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degradation

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was over-grazing. Oceania stood out with the highest incidence of

this

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issue,

while

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other issues contributed to a minor role. First of all, accounting for approximately one-third of the cases, over-grazing was the leading reason the whole world experienced

degradation

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of the

land

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and Oceania’s

land

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including Australia and New Zealand, with 11.3% share, making it the top reason for

this

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phenomenon.

However

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,

although

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Oceania had more causes in the over-grazing zone,

Europe

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was the top country, which accounted for 23% of all total

land

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degradation

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. The clearing of the trees in

Europe

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contributed significantly, reaching nearly 10% compared to the entire region, which had less than a

third,

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placing that country in the first position.

Furthermore

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, the islands in the South Pacific had no instances of over-cultivation,

while

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Europe

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also

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led in

this

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category with a ratio of 7.7%.

Moreover

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, North America was the region that experienced a lower degree of

land

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degradation

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with a total of 5%. The main contributing factor was over-cultivation with 3.3%,

whereas

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only 0.2% of trees were cut. When considering all these factors, North America showed a lower rate of

land

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degradation

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across all sectors.