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Large near-surface nitrate pools in soils capped by desert pavement in the Mojave Desert, California

2008; Geological Society of America; Volume: 36; Issue: 3 Linguagem: Inglês

10.1130/g24343a.1

1943-2682

Robert C. Graham, Daniel R. Hirmas, Yvonne A. Wood, C. Amrhein,

Soil and Water Nutrient Dynamics

Research Article| March 01, 2008 Large near-surface nitrate pools in soils capped by desert pavement in the Mojave Desert, California Robert C. Graham; Robert C. Graham 1Soil & Water Sciences Program, Department of Environmental Sciences, University of California–Riverside, Riverside, California 92521-0424, USA Search for other works by this author on: GSW Google Scholar Daniel R. Hirmas; Daniel R. Hirmas 1Soil & Water Sciences Program, Department of Environmental Sciences, University of California–Riverside, Riverside, California 92521-0424, USA Search for other works by this author on: GSW Google Scholar Yvonne A. Wood; Yvonne A. Wood 2University of California Cooperative Extension, Inyo-Mono Counties, 207 West South Street, Bishop, California 93514, USA Search for other works by this author on: GSW Google Scholar Christopher Amrhein Christopher Amrhein 3Soil & Water Sciences Program, Department of Environmental Sciences, University of California–Riverside, Riverside, California 92521-0424, USA Search for other works by this author on: GSW Google Scholar Author and Article Information Robert C. Graham 1Soil & Water Sciences Program, Department of Environmental Sciences, University of California–Riverside, Riverside, California 92521-0424, USA Daniel R. Hirmas 1Soil & Water Sciences Program, Department of Environmental Sciences, University of California–Riverside, Riverside, California 92521-0424, USA Yvonne A. Wood 2University of California Cooperative Extension, Inyo-Mono Counties, 207 West South Street, Bishop, California 93514, USA Christopher Amrhein 3Soil & Water Sciences Program, Department of Environmental Sciences, University of California–Riverside, Riverside, California 92521-0424, USA Publisher: Geological Society of America Received: 06 Aug 2007 Revision Received: 21 Nov 2007 Accepted: 27 Nov 2007 First Online: 02 Mar 2017 Online ISSN: 1943-2682 Print ISSN: 0091-7613 The Geological Society of America, Inc. Geology (2008) 36 (3): 259–262. https://doi.org/10.1130/G24343A.1 Article history Received: 06 Aug 2007 Revision Received: 21 Nov 2007 Accepted: 27 Nov 2007 First Online: 02 Mar 2017 Cite View This Citation Add to Citation Manager Share Icon Share Facebook Twitter LinkedIn MailTo Tools Icon Tools Get Permissions Search Site Citation Robert C. Graham, Daniel R. Hirmas, Yvonne A. Wood, Christopher Amrhein; Large near-surface nitrate pools in soils capped by desert pavement in the Mojave Desert, California. Geology 2008;; 36 (3): 259–262. doi: https://doi.org/10.1130/G24343A.1 Download citation file: Ris (Zotero) Refmanager EasyBib Bookends Mendeley Papers EndNote RefWorks BibTex toolbar search Search Dropdown Menu toolbar search search input Search input auto suggest filter your search All ContentBy SocietyGeology Search Advanced Search Abstract We found exceptionally high nitrate levels (up to 12,750 kg ha−1) at shallow depths (≤1 m) in soils mantled by desert pavement, a common land-surface feature in arid regions. Nearby soils without desert pavement had nitrate contents that were one to two orders of magnitude lower. The soil conditions coincident with desert pavement (i.e., stability, antiquity, and virtually no leaching) favor the retention and accumulation of nitrate delivered by atmospheric deposition or in situ fixation. The nitrate stored in soils under desert pavement is a previously unrecognized pool of nitrogen that has the potential to increase the global nitrogen inventory for near-surface desert soils to five times previous estimates. Its near-surface occurrence makes this labile nitrogen pool particularly susceptible to mobilization by climate change or human disturbance, risking contamination of surface and groundwaters. You do not have access to this content, please speak to your institutional administrator if you feel you should have access.