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

The pie chart illustrates the primary reason why agricultural

land

is less productive

whereas

the table compares these

causes

in three various regions of the world during the 1990s. Looking from an

overall

perspective,

it is clear that

Europe observed more

land

degradation than the other regions by mainly

deforestation

. There were four

causes

of worldwide

land

reduction. 35% of

land

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the land

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was degraded by over-grazing.

Over-cultivation

and

deforestation

had a similar trend.

However

,

over-cultivation

was in second place with 30%

while

the proportion of

deforestation

made up 28%. Other

causes

affected less prevalent

land

degradation with 7%. As for the table, 23% of

land

degradation was seen in Europe where

deforestation

accounted for nearly 10%.

Over-cultivation

and over-grazing were other

causes

, 7.7% and 5.5% respectively. In Oceania,

over-cultivation

was not witnessed and the first cause was over-grazing with roughly 11%. In North America,

deforestation

impacted less

land

reduction with 0.2%. In

this

region, the percentage of

over-cultivation

was more by about twice that of the proportion of over-grazing, at 3.3% and 1.5% respectively.