When otters disappear, for example, urchins take over, decimating kelp forests.

比如当水獭消失，海胆数量会上升，海藻丛会被大量消耗殆尽。

Many use wood from endangered rain forests.

许多木材来自濒危雨林。

Most important of all, the Amazon irrigates the largest tropical rain forest on Earth.

最重要是，亚马逊河灌溉着地球上最大热带雨林。

Salonga is Africa's largest protected rain forest.

萨隆加是非洲最大热带雨林保护区。

Before the eruptions, it was covered by forests of pine trees.

在火山喷发之前，该地区被松树林所覆盖。

But remnants of militias still haunted the forests, preying on the villages.

时至今日，刚果表上像是消停了，但是在丛林里，残余军队依旧阴魂不散，到处洗劫村镇。

Well, just keep looking. It's not that big a forest.

接着找 那又不是多么大个森林。

The land behind the dam, which was mainly tropical forest, was flooded.

大坝后土地主要是热带雨林，它们都已被水淹没。

Is it really possible to bring all that forest back?

真有可能所有森林都种回来吗？

And we can't keep cutting down rain forests for it.

而且我们不能因此而砍掉 雨林来满足这个需求。

And you can't bring back the forests that once grew where there is now desert.

您也不能沙漠中从前完整森林带回来。

In those days, much of North America was filled with thick, green forests.

那个时候，北美大部分地区都被覆盖着茂密葱郁树林。

The town of Rikuzentakata was once famous for its beautiful beach side pine forest.

高田市曾以海滨松树林闻名遐迩。

The view above shows a haze blanketing forest.

上图展示了一片薄雾笼罩森林。

In nearby Ghazi Bay, conservation efforts are focused on the local mangrove forests.

在附近巴湾，保护努力都集中在当地红树林。

Or the freshwater ecosystem that really feed those forests and allow them to grow.

还是滋养了这些森林并其得以生长淡水生态系统。

It was just flat forest like we went through.

就像我们经过那片平坦森林。

Some countries plant new forests but it's a drop in the ocean.

一些国家种植新森林，但那只是沧海一粟。

Timber mafias are roaming Ecuadorean forests to find balsa wood used in wind-turbine blades.

木材集团正在厄瓜多尔森林里找寻于制造风力涡轮机叶片轻木。

You see sloths live high up in the branches of Central and South American forests.

你会看到树懒在中美洲和南美洲森林枝丫上高高地栖息着。