Effect of the soil uses on their thermal stability

• Published in: Journal of thermal analysis and calorimetry Vol. 99; no. 3; pp. 911 - 916
• Main Authors: Salgado, J., Proupín, J., Villanueva, M., Rodríguez-Añón, J. A., Barros, N.
• Format: Journal Article Conference Proceeding
• Language: English
• Published: Dordrecht Springer Netherlands 01.03.2010; Springer
• Subjects: Agronomy. Soil science and plant productions; Analytical Chemistry; Arable land; Biological and medical sciences; Calorimetry; Carbon; Chemistry; Chemistry and Materials Science; Differential scanning calorimetry; Fundamental and applied biological sciences. Psychology; Ignition temperature; Inorganic Chemistry; Mathematical analysis; Measurement Science and Instrumentation; Physical Chemistry; Physics, chemistry, biochemistry and biology of agricultural and forest soils; Polymer Sciences; Soil (material); Soil science; Stabilization; Europe; Spain; Heat of combustion; Soil organic matter; Soil quality; DSC; Recalcitrance; Differential scanning calorimetry; Organic matter; Cultivated soil; Forest soil; Thermal stability; Thermal properties; Soils; Seasonal variation; Thermal analysis; Thermodynamic properties
• ISSN: 1388-6150; 1588-2926; 1572-8943
• DOI: 10.1007/s10973-009-0559-5

Differential scanning calorimetry was applied to assess on seasonally soil organic matter changes. Soils were collected in two sites located in Viveiro (Galicia, Spain). One of them has been used as arable land and the other one was under pinewood. Soil samples were seasonally collected during a year. The heat of combustion and the ignition temperature of the soil organic matter were calculated by analyzing the thermograms obtained by differential scanning calorimetry. The shape and the maximum and end temperatures of the two exothermic peaks observed in the thermograms, yielded information about the relations between the labile and recalcitrant pools, and hence information about carbon stabilization degree in both soils.