Design of an experimental procedure to assess soil health state
| Autor: | O. Núñez-Fernández, Lisardo Núñez-Regueira, Maria Villanueva-López, J. A. Rodríguez-Añón, J. Proupín-Castiñeiras |
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| Rok vydání: | 2006 |
| Předmět: | |
| Zdroj: | Journal of Thermal Analysis and Calorimetry. 85:271-277 |
| ISSN: | 1572-8943 1388-6150 |
| Popis: | The design of a rigorous experimental procedure is the basis for any environmental study. In this work, the basic criteria are established for determination of soil health using microcalorimetry as the main technique complemented by the study of physical (temperature, moisture, porosity, hydraulic conductivity, density and plasticity), chemical (pH and C to N ratio) and biological features (most probable number of microorganisms and organic matter content), and also environmental properties in the form of bioclimatic diagrams. The design was elaborated using as a reference a humic eutrophic-Cambisol subjected to afforestation with P. pinaster Aiton situated in Viveiro (Galicia, NW Spain). Main results of this study refer to total heat evolved during the processes (2.65 to 3.81 J g–1), time to reach the maximum of the peak from 16.17 to 19.29 h, and microbial growth rate constant from 0.0732 to 0.1043 h–1. These results change over the year as they are influenced by the action of environmental parameters over soil microbial activity. The results are in close agreement with some others previously reported using different experimental techniques. |
| Databáze: | OpenAIRE |
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