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

, and Oceania during the 1990s.

Overall

,

it is clear that

the primary cause of

land

degradation

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

this

issue,

while

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

of the

land

and Oceania’s

land

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

this

phenomenon.

However

,

although

Oceania had more causes in the over-grazing zone,

Europe

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

land

degradation

. The clearing of the trees in

Europe

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

third,

placing that country in the first position.

Furthermore

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

while

Europe

also

led in

this

category with a ratio of 7.7%.

Moreover

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

land

degradation

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

whereas

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

land

degradation

across all sectors.