The three most important nutrient recycles are the nitrogen cycle, the carbon cycle and the one we are going to talk about today, the Phosphorus cycle.

这三种最重要的营养循环包括氮循环、碳循环和我们今天要讲的磷循环。

youdao

You said that the nitrogen cycle is also an important nutrient cycle.

你说了，氮循环也是一个重要的营养循环。

youdao

No Dickensian insights are necessary to appreciate the scale of human intervention in the nitrogen cycle.

在理解人类对氮循环的干扰力度方面，并非是杞人忧天。

youdao

Eating meat is the dominant driver of the nitrogen cycle in Europe.

BBC: Nitrogen pollution 'costs EU up to ?280bn a year'

And according to the Planetary Boundaries concept, the nitrogen cycle is already one of the places where humanity has already broken through the "safe limit".

BBC: Food: Organic growth?

It points out, though, that there is little evidence things like the behaviour of the nitrogen cycle or the phosphate cycle in the Holocene were particularly well-suited to humans.

ECONOMIST: The global environment