它们的根长得不深，所以永久冻土不会影响它们的生长。
Their roots don't grow very deep, so the permafrost doesn't interfere with their growth.
造成这种情况的原因有两个：首先，它们生活在活动层中，请记住，活动层中包含的水不会渗透永久冻土。
There're two reasons for this: first, they live in the active layer, which, remember, contains water that doesn't penetrate the permafrost.
答案可能是，现在火星上几乎所有的水都被锁在地表下的永久冻土层中，更多的水被包含在这个星球的极地冰帽中。
The answer may be that virtually all the water on Mars is now locked in the permafrost layer under the surface, with more contained in the planet's polar caps.
地质学家认为，这个具有流体化喷出物的陨石坑表明，在地表下几米深处有一层永久冻土层或水冰。
Geologists think that this fluidized ejecta crater indicates that a layer of permafrost, or water ice, lies just a few meters under the surface.
可能是地下永久冻土突然融化所造成。
Perhaps this is caused by the sudden melting of subsurface permafrost.
永久冻土变得更加温暖时，将变成湿地。
永久冻土温度上升，在此基础上修建基础设施。
Permafrost warms up, and infrastructure built on it founders.
海滩上，有一个不规则的正在融化的永久冻土层。
“气候引爆点”的一个例子就是永久冻土层的融化。
An example of a tipping point is the thawing of the permafrost.
水合物形成于寒冷气候下，如永久冻土带和深水下。
Hydrates form in cold climates, such as permafrost zones and in deep water.
永久冻土融化导致甲烷和其他碳化合物释放到大气层，增加温室效应。
Thawing permafrost leads to releases of methane and other carbon compounds that can reach the atmosphere and increase greenhouse warming.
在北极发生的其它气候正反馈还包括永久冻土融化和植被变化。
Other positive climate feedbacks that operate in the Arctic include the thawing of permafrost and vegetation changes.
盆地大部分是由永久冻土带构成，是地球的两极地区的冻土层。
Much of the basin is made up of permafrost, a layer of frozen soil in Earth's polar regions.
据估计，可能约有500亿吨甲烷被困在西伯利亚湖永久冻土中。
It is estimated that some 50 billion tons of CH4 could be trapped in the Siberian Lake permafrost.
“这些永久冻土中的沉积物开始融化，并释放出甲烷，”麦斯林说。
"These permafrost deposits are now melting and releasing their methane," said Maslin.
永久冻土层经过千万年的累积形成，其中包含了巨量的冻僵的有机物。
The permafrost contains immense amounts of frozen organic matter that have been accumulating for millennia.
雅库茨克是世界上建设在永久冻土上最大的城市——土壤在全年都保持冰冻。
Yakutsk is the largest city in the world built on permafrost - soil that remains permanently frozen year round.
植物的生长或许可以在某些程度上平衡由于永久冻土融化而不断增加的碳排放。
Their growth will likely counterbalance some of the increased emissions from melting permafrost.
在苏联、加拿大或阿拉斯加的永久冻土地区，冰一直很有效地用来做墙和屋顶。
In permafrost areas in the Soviet union or Canada or Alaska, ice has been used effectively for walling and roofing.
俄罗斯63%的领土都是靠永久冻土支撑，因此冻土消融对俄罗斯影响十分重大。
The thaw has major implications for Russia since as much as 63 percent of Russian territory is underpinned by permafrost.
永久冻土和坚厚的岩层将确保遗传材料即使在没电的情况下保持冰冻状态并得到保护。
Permafrost and thick rock will ensure that even without electricity, the genetic material stored in the vault will remain frozen and protected.
在一些例子里，纳税人也在支付费用，比如被融化的永久冻土损害的高速公路的维修。
In some instances, taxpayers are paying for these costs such as repairing highways that are damaged by melting permafrost.
当科学家们飞到遥远的西伯利亚研究永久冻土带时，他们发现了一处一直在膨胀的北极湖。
When scientists fly into remote areas of Siberia to study permafrost, they gaze down on an endless expanse of arctic lakes.
气候变暖是全球性的，但是从气候变化模型上看却将在北半球扩散——永久冻土融化，人类定居点被迫转移。
The planet's warming may be global, but climate-change models predict it will be amplified in the north. Permafrost will melt and settlement patterns will change.
气候变暖是全球性的，但是从气候变化模型上看却将在北半球扩散——永久冻土融化，人类定居点被迫转移。
The planet's warming may be global, but climate-change models predict it will be amplified in the north. Permafrost will melt and settlement patterns will change.
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