Severe deforestation has accelerated soil erosion and reduced productivity.

严重的乱砍滥伐加快了水土流失，降低了生产力。

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In my viewpoint, I think the most severe destruction is the water pollution and deforestation.

我的观点，我认为最严重的破坏是黄河水质污染、森林砍伐。

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Chinese scientists have linked the increasingly severe storms of the last decade to massive deforestation and over-exploited water resources in southern and eastern China.

中国的科学家们认为，快速增长的严重沙尘暴和过去十年间中国南部的大面积伐木和东部过度开采水源的行为密切相关。

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In some places, especially in Haiti, where severe deforestation is added to the mix of problems, extinctions are possible.

NPR: Alarm Over Vanishing Frogs In The Caribbean