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  3. The pie chart shows the main reasons why agricultural land becomes less prod

The pie chart shows the main reasons why agricultural land becomes less prod

游客2025-02-18  20
问题     The pie chart 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.
    Summarise the information by selecting and reporting the main features and make comparisons where relevant.
   
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答案     The pie chart presents information about the causes of land degradation in the world and the table shows how three regions of the world were affected by this problem.
    Over-grazing was the primary cause of the world’s land degradation, with around 35% of land around the world degraded by this. Deforestation and over-cultivation were responsible for 30% and 28% of degradation respectively, while the remaining 7% was attributed to other problems.
    Europe had the largest proportion of unproductive land at 23%, nearly twice the figure for Oceania and more than four times the level of degradation in North America.
    Deforestation was the principal reason for land degradation in Europe (9.8%) and the proportions of land degraded by this cause in other two areas were significantly lower.
    Over-cultivation was another problem in Europe, causing damage to 7.7% of land, compared with 3.3% in North America. In contrast, over-grazing was severe in Oceania, reducing the productivity of 11.3% of land, but the levels of damage were lower in other two regions.
    Overall, over-grazing was the main problem worldwide in terms of land degradation. Europe had a higher proportion of degraded land than other two areas.
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