Increase in pH stimulates mineralization of 'native' organic carbon and nitrogen in naturally salt-affected sandy soils

Large amounts of terrestrial organic C and N reserves lie in salt-affected environments, and their dynamics are not well understood. This study was conducted to investigate how the contents and dynamics of 'native' organic C and N in sandy soils under different plant species found in a sal...

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Veröffentlicht in:	Plant and soil 2007-01, Vol.290 (1/2), p.269-282
Hauptverfasser:	Li, Xiao-gang, Rengel, Zed, Mapfumo, Emmanuel, Bhupinderpal-Singh
Format:	Artikel
Sprache:	eng
Schlagworte:	Acid soils Agronomy. Soil science and plant productions Alkaline soils Alkalinity Animal, plant and microbial ecology Biological and medical sciences Carbon Clay soils Forest soils Fundamental and applied biological sciences. Psychology Mineralization Organic carbon Organic matter Organic soils Plant species Saline soils Salts Sandy soils Soil biochemistry Soil microorganisms Soil organic matter Soil pH Soil salinity Soil salts Soil sciences
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Beschreibung
Zusammenfassung:	Large amounts of terrestrial organic C and N reserves lie in salt-affected environments, and their dynamics are not well understood. This study was conducted to investigate how the contents and dynamics of 'native' organic C and N in sandy soils under different plant species found in a salt-affected ecosystem were related to salinity and pH. Increasing soil pH was associated with significant decreases in total soil organic C and C/N ratio; particulate (0.05–2 mm) organic C, N and C/N; and the C/N ratio in mineral-associated (
ISSN:	0032-079X 1573-5036
DOI:	10.1007/s11104-006-9158-4