In parts of East Africa, decades of illegal logging and clearing of land contributed to devastating droughts in recent years.

在东非部分地区，几十年的非法砍伐和土地开垦在近几年造成了毁灭性的旱灾。

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Clearing of land for feed crop production and expansion of pastures for livestock production has been one of the driving forces behind deforestation.

为饲料作物生产清理开垦土地，为畜牧生产扩大牧场，成为毁林的动力之一。

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To feed the larger population, humans need to obtain arable land, so there is a massive clearing of trees.

人类为了养活比以前更多的人口，需要获得可耕地，因此大量砍伐树木。

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Clearing of land for agriculture, logging, and other extractive industries accounts for as much as one third of some countries' total carbon emissions.

BBC: Deforestation 'faster in Africa'

But while the presence of humans has been a major factor in increasing deforestation and the clearing of land for farming, the absence of humans can also be a threat to trees.

BBC: Why are the world's older trees disappearing?

The act of clearing land for livestock is one that damages the environments on which people and other life depend.

MSN: Mealworms: They're not just for breakfast anymore...