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A reservoir of nitrate beneath desert soils

Dates

Year
2003

Citation

Walvoord, Michelle A, Phillips, Fred M, Stonestrom, David A, Evans, R David, Hartsough, Peter C, Newman, Brent D, and Striegl, Robert G, 2003, A reservoir of nitrate beneath desert soils: Science, v. 302, iss. 5647, p. 1021-4.

Summary

A large reservoir of bioavailable nitrogen (up to approximately 10(4) kilograms of nitrogen per hectare, as nitrate) has been previously overlooked in studies of global nitrogen distribution. The reservoir has been accumulating in subsoil zones of arid regions throughout the Holocene. Consideration of the subsoil reservoir raises estimates of vadose-zone nitrogen inventories by 14 to 71% for warm deserts and arid shrublands worldwide and by 3 to 16% globally. Subsoil nitrate accumulation indicates long-term leaching from desert soils, impelling further evaluation of nutrient dynamics in xeric ecosystems. Evidence that subsoil accumulations are readily mobilized raises concern about groundwater contamination after land-use or climate [...]

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  • USGS National Research Program

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Added to ScienceBase on Tue Apr 23 14:38:01 MDT 2013 by processing file <b>Characterization of Biotic and Biogeochemical Interactions at Environmental Interfaces.xml</b> in item <a href="https://www.sciencebase.gov/catalog/item/5042163ae4b04b508bfd3335">https://www.sciencebase.gov/catalog/item/5042163ae4b04b508bfd3335</a>

Additional Information

Identifiers

Type Scheme Key
DOI http://sciencebase.gov/vocab/identifierScheme 10.1126/science.1086435

Citation Extension

journalScience
parts
typePages
value1021-4
typeVolume
value302
typeIssue
value5647
citationTypeJournal Article

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