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Continental drivers of ammonium and nitrate in Australian soil under different land uses [1]

Soil N is an essential element for plant growth, but its mineral forms are subject to loss to the environment by leaching and gaseous emissions. Despite its importance for the soil-plant system, factors controlling soil mineral N concentrations over large spatial scales are not well understood. We used NH4+ and NO3− concentrations (0–30 cm depth) from 469 sites across Australia, and determined soil controls on their regional variation. Soil mineral N varied regionally but depended on the different land uses. In the agricultural region of Australia, NH4+ tended to be depleted (4.9 ± 4.8 vs. 5.6 ± 9.0 mg N kg−1) and NO3− was significantly enriched (6.0 ± 9.2 vs. 3.8 ± 9.9 mg N kg−1), compared to the non-agricultural ecological region.

Original Source [2]

Publication Date: 
24/04/2018
Juhwan Lee [3], Gina M. Garland [4], Raphael A. Viscarra Rossel [5]
SOIL [6]
1-21
Tags:
Land Use [7], Land Pollution [8], Australia [9], Soil Capability [10], Oxides Of Nitrogen (NOx) [11], Agriculture [12], Carbon Sequestration [13], Grazing Lands [14], Carbon Sinks [15], Climate [16]

Technology Partners: MimirTech

Source URL: http://admin.indiaenvironmentportal.org.in/feature-article/continental-drivers-ammonium-and-nitrate-australian-soil-under-different-land-uses

Links:
[1] http://admin.indiaenvironmentportal.org.in/feature-article/continental-drivers-ammonium-and-nitrate-australian-soil-under-different-land-uses
[2] https://www.soil-discuss.net/soil-2018-5/
[3] http://admin.indiaenvironmentportal.org.in/category/author/juhwan-lee
[4] http://admin.indiaenvironmentportal.org.in/category/author/gina-m-garland
[5] http://admin.indiaenvironmentportal.org.in/category/author/raphael-viscarra-rossel
[6] http://admin.indiaenvironmentportal.org.in/category/journal/soil
[7] http://admin.indiaenvironmentportal.org.in/category/thesaurus/land-use
[8] http://admin.indiaenvironmentportal.org.in/category/thesaurus/land-pollution
[9] http://admin.indiaenvironmentportal.org.in/category/thesaurus/australia
[10] http://admin.indiaenvironmentportal.org.in/category/thesaurus/soil-capability
[11] http://admin.indiaenvironmentportal.org.in/category/thesaurus/oxides-nitrogen-nox
[12] http://admin.indiaenvironmentportal.org.in/category/thesaurus/agriculture
[13] http://admin.indiaenvironmentportal.org.in/category/thesaurus/carbon-sequestration
[14] http://admin.indiaenvironmentportal.org.in/category/thesaurus/grazing-lands
[15] http://admin.indiaenvironmentportal.org.in/category/thesaurus/carbon-sinks
[16] http://admin.indiaenvironmentportal.org.in/category/thesaurus/climate