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With so much rain, it's not surprising that many of the world's largest rivers are found in rainforests.
有這么多的降水量，世界上多數的大河都在雨林里產生也就不足為奇了。
Inside the forest, the high humidity creates the perfect conditions for a strange world where life is built on decay.
雨林深處，十分潮濕的環境非常適合一些生命在腐殖質上生長。
Amoeba-like slime moulds cruise the surface, feeding on bacteria and rotting vegetation.
象這種粘菌類變形蟲正在地表上巡航，它們以細菌和地衣為生。
Fungi also flourish on decay.
真菌類也以腐殖質為生。
These are the fruiting bodies of the fungi,
這些僅僅是真菌的一個子實體，
the only visible sign of a vast underground network of fungal filaments.
看不見的地表下還有它的廣大的菌絲網絡。
In temperate forests, the build-up of leaf litter creates rich stores of nutrients.
在溫帶森林里，落葉形成的腐殖質層可以貯藏養分。
That, however, doesn't happen here.
可是這里不會發生這種事。
Nutrients that reach the soil are leeched out by the rain,
土壤中的養分會被雨水沖走，
but fungi are connected to tree roots by their underground filaments, and by quickly consuming the dead,
真菌用地下菌絲連接在樹根上，它們很快吃掉死植物，
they help to recycle crucial minerals straight back into the trees.
真菌因此幫助樹木直接供給樹木所需的礦物質。
And this recycling happens faster here than anywhere else on the planet.
這種生態循環的速度，比地球上其他地方要快得多。
