Those trees, Jenny told me, partner with arbuscular fungi.

Jenny 告诉我们这些树与丛枝真菌合作。

Trees that associate with arbuscular mycorrhizae tend to have more nitrogen and phosphorus in their leaves.

与丛枝菌根关联的树木，其树叶往往含有更多的氮和磷。

The other type, she tells me, is arbuscular mycorrhizae.

她告诉我们，另一种是丛枝菌根。

Those trees, Jenny told me, partner with arbuscular fungi.

达夫：珍妮告诉我，那些树与丛枝真菌相伴。

And you said the arbuscular mycorrhizae, they are even smaller?

达夫：你说的是丛枝菌根，它们甚至更小？

Ectomycorrhizae and arbuscular mycorrhizae specialize in getting different nutrients, and they trade those nutrients to trees at different price points.

外生菌根和丛枝菌根分别专门获取不同养分，将这些养分以不同价位与树木交易。

Trees that associate with arbuscular mycorrhizae tend to have more nitrogen and phosphorus in their leaves.

达夫：与丛枝菌根相关的树木的叶子中往往含有更多的氮和磷。

Because arbuscular and ectomycorrhizal fungi produce different chemical signatures, researchers can use what's going on in the leaves to predict what's going on underground.

因为丛枝菌根和外生菌根真菌产生的化学物质特征不同，研究者可用树叶情况来预测地下情况。

You get some from your arbuscular fungi for about half off, compared with the oak tree next to you, who is trading with ectomycorrhizal fungi.

对比旁边与外生菌根真菌交易的橡树，你向丛枝菌根真菌用大约半价买来一些氮。

Because arbuscular and ectomycorrhizal fungi produce different chemical signatures, researchers can use what's going on in the leaves to predict what's going on underground.

达夫：由于丛枝真菌和外生菌根真菌产生不同的化学特征，研究人员可以利用叶子中发生的情况来预测地下发生的情况。

So if you have a map of all the tree species in your forest, and you can very easily say, you know, 20 percent of your forest is going to be associated with arbuscular mycorrhizae...

因此如果你有森林中所有树种的地图，你就能轻松地说 20% 的森林与丛枝菌根有关。

And so what might happen is that because now we have these arbuscular mycorrhizae going into the Arctic, and they are just less efficient in acquiring nitrogen, the plants might suffer even further.

因此可能发生的情况是，由于我们使丛枝根菌进入北极，而它们吸收氮的效率较低，继而植物会雪上加霜。

Braghiere: And so what might happen is that because now we have these arbuscular mycorrhizae going into the Arctic, and they are just less efficient in acquiring nitrogen, the plants might suffer even further.

布拉吉埃：所以可能发生的情况是，因为现在我们有这些丛枝菌根进入北极，它们获取氮的效率较低，所以植物可能会遭受进一步的损失。