[Henderson's] n. a layer of permanently frozen soil, usually sub-surface, which occurs where temperatures are low enough, and which is a feature of the tundra in polar regions. It is generally covered in warmer months with a thin partially melted layer, which in the tundra supports a vegetation of mosses, lichens, grasses and small herbaceous plants. The permafrost layer may be up to hundreds of metres thick.

http://vocabs.lter-europe.net/EnvThes/USLterCV_408

true

http://vocabs.lter-europe.net/EnvThes/1

2016-03-31

herbert.schentz@umweltbundesamt.at

[Henderson's] n. a layer of permanently frozen soil, usually sub-surface, which occurs where temperatures are low enough, and which is a feature of the tundra in polar regions. It is generally covered in warmer months with a thin partially melted layer, which in the tundra supports a vegetation of mosses, lichens, grasses and small herbaceous plants. The permafrost layer may be up to hundreds of metres thick.

true

http://en.wikipedia.org/wiki/permafrost

http://linkeddata.ge.imati.cnr.it:2020/resource/EARTh/23420

http://vocabs.lter-europe.net/EnvThes/

http://vocabs.lter-europe.net/EnvThes/20919

2022-03-21

[controlled by ] Heikki Hamalainen

permafrost

US LTER controlled vocabulary