由于中国天然林相对比较缺乏，加之我国现在正在实行“天保”工程，木材采伐量递减。
China is comparatively lack of the natural forest, and the yield of wood harvesting is decreasing because of "the National natural forest Conservation Project".
在我们建房前我们必须烧制砖块，从森林中采伐木材。
Before we could build we had to fire bricks and carry timber from the forests.
另一个挑战是确保重建工作对木材的巨大需求不会导致受灾国家森林的过度开采和非法采伐。
Another challenge is to ensure that the huge demand for wood for reconstruction does not trigger over-harvesting and illegal logging of forests in the affected countries.
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