Across the northern hemisphere the deciduous forests are changing.

环绕整个北半球，可以看到林在不断化。

Here, in the deciduous forests of eastern Russia, the winter makes hunting very difficult.

这里是俄罗斯东部林，冬天使狩相当困难。

Deciduous and evergreen trees handle this problem in different ways.

树和常青树以不同方式处理这个问题。

Here at the very south of the Taiga, deciduous trees take over from evergreens.

这里是泰加林最南端，树木取代了常绿树木。

For thousands of years, it was the most abundant tree species across the eastern deciduous forest.

千百年来，它曾是东部林中数最多树种。

They eat leaves, twigs, and the inner bark of deciduous trees, as well as shrubs, aquatic plants, and grasses.

它们吃子，嫩枝和性树木内层树皮，还有灌木、水生植物、草等。

Brambles, though churlish when handled, are kindly shelter in early winter, being the latest of the deciduous bushes to lose their leaves.

刺藤扎手，很难处理，但在初冬之时，却是很好遮蔽物，因为在所有植物中，它是最后。

So after a severe fire, the environment is better suited for deciduous tree species like birch and aspen to get a foothold.

因此在严重火灾后，森林环境更适合桦树和山杨等阔树立足。

There was pollen, there was spores, there were leaves and the general tenor of the plant remains was that it was a deciduous type forest.

这里有花粉和孢子，有子，而且这些植物遗骸表明这是一个林。

Humans have two sets of teeth, the deciduous dentition of childhood, which fall out and are replaced by the permanent dentition of adulthood.

人类有两套牙齿，儿童时期乳牙会脱，并被成年时期恒牙齿列所取代。

So after a severe fire, the environment is better suited for deciduous tree species like birch and aspen to get a foothold. These trees grow much faster.

所以在一场严重火灾之后，环境更适合像桦树和白杨这样树种找到立足点。 这些树长更快。

And so this example of more rapid accumulation of carbon in deciduous broadleaf stands is a way of thinking of putting the brakes on the runaway train.

所以阔林碳积累更快是一种给失控列车踩刹车方式。

The first are called deciduous trees which are any tree that seasonally shed all their leaves, usually in the fall as the weather starts to get colder.

第一种被称为树，是指季节性脱所有树树木，通常是在秋天天气开始冷时候。

The added carbon accumulation, as the forest regime regenerates and shifts from coniferous to deciduous trees-that's like putting the parking brake on while driving the bus, says Johnstone.

约翰斯通表示，随着森林环境更新，针树转到阔树，增加碳积累就像在驾驶公共汽车时踩刹车一样。

For thousands of years, it was the most abundant tree species across the eastern deciduous forest. It's lumber was used to create fine musical instruments and hardwood furniture.

千百年来，它曾是东部林中数最多树种。它木材被用来制作精美乐器和硬木家具。

Since deciduous trees have big leafs that take lots of energy to maintain, they simply close up the holes where the leaves attach to the tree to conserve moisture.

由于树子很大，需要大能来维持，所以它们会把子和树连接孔封闭起来以保存水分。

Deciduous trees like birch and aspen live for about 100 years, so the team couldn't simply wait for one or two centuries to find out what happens in the forest.

像桦树和白杨这样阔树寿命约为100年，所以研究小组不能只是等上一两个世纪来发现森林里发生了什么。