Losses of Co2 of the soil and time variability of the climatic conditions in the semiarid of Paraiba
The evaluation of CO2 was carried in five points in the field,with a monthly collection in the daylight (from 5:00 AM to 5:00PM) for twelve months. Cylinders had been installed for thecaptation of CO2 in randomized blocks. The meteorologicaldata were received from the digital station. The water cont...
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| Autores principales: | , , , , , |
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| Formato: | Artículo publishedVersion |
| Lenguaje: | Portugués |
| Publicado: |
UFPR
2007
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| Materias: | |
| Acceso en línea: | http://ojs.c3sl.ufpr.br/ojs2/index.php/raega/article/view/5556 http://biblioteca.clacso.edu.ar/gsdl/cgi-bin/library.cgi?a=d&c=br/br-052&d=article5556oai |
| Aporte de: |
| Sumario: | The evaluation of CO2 was carried in five points in the field,with a monthly collection in the daylight (from 5:00 AM to 5:00PM) for twelve months. Cylinders had been installed for thecaptation of CO2 in randomized blocks. The meteorologicaldata were received from the digital station. The water contentof the soll was determined in a rectilinear greenhouse at105ºC. In the rainy season, when the solar radiation andtemperatures diminished, the tax of losses CO2 diminished.In the dry season, the tax of edaphic respiration increasedwith the water availability of the ground. The CO2 tax variedalong the day in function of the incidence of the solar radiationand the oscillations of the temperature. During the months ofbigger precipitation, the increase or the reduction of the CO2tax depended on the solar radiation. The CO2 production waslesser in October, June and July, because of the reduction ofthe solarimetric elements. |
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