多年冻土或永冻土(Permafrost)是指冻结状 态持续三年以上的土层。 五、岩溶（喀斯特） 岩溶（Karst）是石灰岩、白云岩、泥 灰岩、岩盐、石膏等可溶性岩层受水的...
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永冻土带 permafrost
永冻土层面 permafrost table
永冻土面 [地质] Permafrost Table ; [地质] pergelisol table
永冻土下的水 subpermafrost waters
永久冻土 [地理] permafrost ; perennially frozen ground ; perennial frost ; SWIPA
残余永冻土 relict permafrost ; [地质] fossil permafrost
永冻土上的 supragelisol
永冻土壤 perpetually frozen soil
永冻土底冰 LIVE FAST AND DIE YOUNG
科学家说过去认为永冻土解冻会排放二氧化碳和甲烷，氧化亚氮则不会释放出来。
The scientists said that past studies had reckoned that carbon dioxide and methane were released by a thaw of permafrost while nitrous oxide stayed locked up.
对于气候变化来说——并且已经使永冻土化冻，海冰融化和阿拉斯加的冰川退化——碳引起的酸化也许首先在这里发威。
As with climate change - which has already thawed permafrost, melted sea ice, and shrunk glaciers in Alaska - carbon-caused ocean acidification will likely hit home here first.
“永冻土解冻和土壤排水对氧化亚氮的排放不会有显著影响”哥本哈根大学Bo Elberling领衔的报导写到。
"Thawing and drainage of the soils had little impact on nitrous oxide production," Nature said in a statement of the study led by Bo Elberling of Copenhagen University.
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