The pie chart and table provide information about four key causes of soil erosion and their influence on North America, Europe, and Oceania over the 1990s.
Overall, three main aspects affected to agriculture were deforestation, over-cultivation, and overgrazing. It is seen that the percentage of degraded land in the European region was the greatest compared to all remained zones.
Overharvesting is the main cause of land degradation; the percentage of its influence was over a third of the total. The figure for removal of trees was about one-third of the total, while that for excessive cultivation was less than 30 %. The rate of other reasons that influenced the productivity of land was a tiny 7 %.
The main problem for North America was over-growing, more than 3 % of total land became less productive because of that. However, that factor was not affected to Oceania at all, but approximately 11% of total deteriorated land by the reason of grazing. Removing of tree cover in Europe undesired almost 10 % of the total land.
The pie chart and table provide information about four key causes of soil erosion and their influence on North America, Europe, and Oceania over the 1990s.
Overall
, three main aspects
affected
to agriculture were deforestation, over-cultivation, and overgrazing. It is
seen
that the percentage of degraded
land
in the European region was the greatest compared to all remained zones.
Overharvesting
is the main cause of
land
degradation; the percentage of its influence was over a third of the
total
. The figure for removal of trees was about one-third of the
total
, while that for excessive cultivation was less than 30 %. The rate of other reasons that influenced the productivity of
land
was a tiny 7 %.
The
main problem for North America was over-growing, more than 3 % of
total
land
became less productive
because
of that.
However
, that factor was not
affected
to Oceania at all,
but
approximately 11% of
total
deteriorated
land
by the reason of grazing. Removing of tree cover in Europe undesired almost 10 % of the
total
land
.