2021雅思写作Task1小作文柱状图范文：全球土地退化

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　　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 1990s.
　　参考范文：
　　The main factors responsible for the decreased productivity of agricultural
land in North America, Europe, and Oceania during the 1990s were summarized in a
pie chart and a table.
　　the most serious problem was over-grazing. It has caused the world to lose
35% of agriculture land. This problem is followed closely by deforestation and
over-cultivation.
　　The area that has lost most proportion of its agriculture land was Europe
at 23% However, Oceania and North America was not as badly affected, losing 13%
and 5% of its farmland respectively.
　　Surprisingly, the main problem faced by each area is different from one
another. The problem with over-grazing is especially serious in Oceania,
resulting in 11.3% of its land unsuitable for agriculture. On the other hand,
deforestation that caused 9.8% of agriculture land unusable was the major
problem faced by the European farmers. Although over-cultivation was the primary
threat in North America, it was not a problem at all in Oceania.
　　In conclusion, over-grazing was the main cause of worldwide degradation in
1990s. Europe’s percentage of degradation was largest of all three regions and
all three regions had different predominant causes.
　　Total Words: 172
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