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[老师已改] 剑8 test1 task1

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发表于 2015-11-24 00:46 | 小站托福TPO客户端

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The pie chart illustrates the major reasons why agricultural land became less productive. The table shows how three regions of the world were affected by these causes during the 1990s.

It is clear  from the pie chart that over-grazing is the majority reason of land degradation, with it represented 35% over the world. Next comes the deforestation, as the rank 2 cause of land degeneration, it comprise 30% of degenerated land. Over-cultivation is only sightly lower than deforestation, which accounted for 28% of the degradation. Only 7% was caused by other reasons.

We can see from the table that is shows different degree of degradation in North American, Europe and Oceania. The main reason of land degradation in North American is over-cultivation, which caused 3.3% of land degradation, followed by over grazing and deforestation (1.5% and 0.2%). Deforestation affected 9.9% of land, became the major reason of land degradation, over-cultivation (7.7%) and over-grazing (5.5%) also affected a lot. It was obvious that the over-grazing constituted almost all reasons of Oceanian land degradation (11.3%) as oppose to no land was degraded by over-cultivation. Deforestation composed 1.7% land degradation of Oceania.

Overall, Euro pe takes the lead of land degradation (23%), next comes Oceania (13%) and North America (5%).




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