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A Reservoir of Nitrate Beneath Desert Soils
Abstract
A large reservoir of bioavailable nitrogen (up to ∼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 change.
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Cited by
Denitrification across landscapes and waterscapes: a synthesis
Seitzinger, S., Harrison, J. A., Böhlke, J. K., Bouwman, A. F., Lowrance, R., Peterson, B., Tobias, C., & Drecht, G. V. (2006) · Ecological Applications · doi:10.1890/1051-0761(2006)016[2064:dalawa]2.0.co;2 · Cited by 1,679
Contribution of cryptogamic covers to the global cycles of carbon and nitrogen
Elbert, W., Weber, B., Burrows, S., Steinkamp, J., Büdel, B., Andreae, M. O., & Pöschl, U. (2012) · Nature Geoscience · doi:10.1038/ngeo1486 · Cited by 957
The Origin of Naturally Occurring Perchlorate: The Role of Atmospheric Processes
Dasgupta, P. K., Martinelango, P. K., Jackson, W. A., Anderson, T. A., Tian, K., Tock, R. W., & Rajagopalan, S. (2005) · Environmental Science & Technology · doi:10.1021/es048612x · Cited by 438
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Scanlon, T. M., Caylor, K. K., Manfreda, S., Levin, S. A., & Rodriguez-Iturbe, I. (2005) · Advances in Water Resources · doi:10.1016/j.advwatres.2004.10.014 · Cited by 126
Metadata
- Authors
- Walvoord, M. A., Phillips, F. M., Stonestrom, D. A., Evans, R. D., Hartsough, P. C., Newman, B. D., & Striegl, R. G.
- Venue
- Science
- Published
- 2003-11-07
- Volume
- 302
- Issue
- 5647
- Pages
- 1021-1024
- ISSN
- 0036-8075 (ISSN-L)
- 1095-9203
- OpenAlex
- W2096418610
- Cited by
- 382
- References
- 0
- FWCI
- 28.66
- Type
- journal article
- Language
- en
- Open access
- closed
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- Walvoord, M. A., Phillips, F. M., Stonestrom, D. A., Evans, R. D., Hartsough, P. C., Newman, B. D., & Striegl, R. G. (2003). A Reservoir of Nitrate Beneath Desert Soils. Science. https://doi.org/10.1126/science.1086435
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Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).
Semantic Scholar’s data is described in: Kinney, R., et al. (2023). The Semantic Scholar Open Data Platform. arXiv:2301.10140.
