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Climatically driven loss of calcium in steppe soil as a sink for atmospheric carbon

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Climatically driven loss of calcium in steppe soil as a sink for atmospheric carbon; 2008; Article; Journal; Global Biogeochemical Cycles; Lapenis, A. G.; Lawrence, G. B.; Bailey, S. W.; Aparin, B. F.; Shiklomanov, A. I.; Speranskaya, N. A.; Torn, M. S.; Calef, M.

Summary

During the last several thousand years the semi-arid, cold climate of the Russian steppe formed highly fertile soils rich in organic carbon and calcium (classified as Chernozems in the Russian system). Analysis of archived soil samples collected in Kemannaya Steppe Preserve in 1920, 1947, 1970, and fresh samples collected in 1998 indicated that the native steppe Chernozems, however, lost 17-28 kg m-2 of calcium in the form of carbonates in 1970-1998. Here we demonstrate that the loss of calcium was caused by fundamental shift in the steppe hydrologic balance. Previously unleached soils where precipitation was less than potential evapotranspiration are now being leached due to increased precipitation and, possibly, due to decreased [...]

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Harvested on Mon Jul 21 11:43:46 MDT 2014 from MODS XML Service

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Type Scheme Key
local-index unknown 70000489
local-pk unknown 70000489
doi http://www.loc.gov/standards/mods/mods-outline-3-5.html#identifier doi:10.1029/2007GB003077
series unknown Global Biogeochemical Cycles

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journalGlobal Biogeochemical Cycles
parts
typevolume
value22
typeissue
value2
languageEnglish
citationTypeArticle

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