To keep it from being cut up, because more area means more species.

让它们免遭伐伐，因为更大的面积意味着更多的物种。

The main causes of deforestation can be classified into three categories.

森伐的主要原因可以分为三类。

And that's how these things are cut off.

这就伐的过程。

Cutting down old trees in order to plant new crops or build homes is called deforestation.

为了种植新作物或建造房屋而伐老的做法被称为森伐。

In total, We would have cut approximately 390 billion trees down.

我们总共将伐大约3900亿棵。

Another example of massive deforestation is the eucalyptus.

另一大量森伐的桉。

They begin the slash and burn process again.

他们又会开始伐和焚烧。

People had cut the trees for farms and development.

人们为了农场和发展伐木。

Sometimes people cut down too many trees.

有时他们会过度伐森。

Many living things lose their homes because of deforestation.

因为伐森，许多生物失去了家园。

But elsewhere, deforestation is a last resort to survive.

但在其它地方森伐生存的最后手段。

No more slash and burn for us! '

我们再也不用伐焚烧了！’

We should stop cutting down so many trees.

我们应该停止伐这么多的。

But wildfires and deforestation make that harder.

但野火和伐让情况雪上加霜。

They will not be cut down for other crops.

森不会因要种植其他作物而被伐。

That's why you don't cut down the first tree you see.

所以不要伐你看到的第一棵。

Farmers seeking to expand have to cut down old trees.

试图增加产量的农民不得不伐老。

They cut trees to build cabins.

他们伐木建造小木屋。

They said ranchers were illegally cutting down rubber tress.

他们说，牧场主非法伐橡胶。

They combined those data with an analysis of deforestation.

他们将这些数据与森伐分析结合起来。