1. Short-term carbon mineralization in saline-sodic soils.
- Author
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Setia, Raj, Setia, Deepika, and Marschner, Petra
- Subjects
- *
BIOMINERALIZATION , *SODIC soils , *SOILS , *SOIL salinity , *WHEAT - Abstract
Previous studies have shown that carbon (C) mineralization in saline or sodic soils is affected by various factors including organic C content, salt concentration and water content in saline soils and soil structure in sodic soils, but there is little information about which soil properties control carbon dioxide (CO) emission from saline-sodic soils. In this study, eight field-collected saline-sodic soils, varying in electrical conductivity (EC, a measure of salinity, ranging from 3 to 262 dS m) and sodium adsorption ratio (SAR, a measure of sodicity, ranging from 11 to 62), were left unamended or amended with mature wheat or vetch residues (2% w/ w). Carbon dioxide release was measured over 42 days at constant temperature and soil water content. Cumulative respiration expressed per gram SOC increased in the following order: unamended soil
- Published
- 2012
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