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- Title
Variabilidade mensal e sazonal da temperatura do solo em diferentes condições de cobertura e de profundidades na região de Tangará da Serra, Mato Grosso.
- Authors
de OLIVEIRA, Karolina Ascari Souza; DALLACORT, Rivanildo; BARBIERI, João Danilo; DANIEL, Diego Fernando; TIEPPO, Rafael Cesar; dos SANTOS, Silmara Bispo
- Abstract
The objective of this study was to compare the thermal responses in two experimental treatments (uncovered soil and soil cultivated with grass) during the dry and rainy season and in the seasons (spring, summer, autumn and winter) in Tangará da Serra - MT. The monitoring of variations in soil temperature at the assessment sites was carried out continuously from April 2014 to April 2015. The soil temperature was measured in tropical megatérmico humid climate (AW), in a very clayey Dystroferric Red Latosol in the southwestern region of the State of Mato Grosso. Thermocouple type K sensors were installed at depths of 5, 10, 20 and 40 cm, connected to a datalogger. The results showed significant changes between the different treatments and months studied. The average hourly soil temperatures during the rainy season were higher than those recorded during the dry season, but the thermal amplitudes during the dry period were higher than those of the rainy season, highlighting the fundamental role of soil cover in reducing the amplitude thermal and humidity in the conduction of heat between the layers. The highest oscillations in temperature and thermal amplitude in both treatments and months studied were observed at 5 cm, followed by the other layers evaluated. In the analysis of seasons, it was verified that during winter the temperatures are lower than those occurring in summer, spring and autumn, however, the recorded thermal amplitude is higher during the winter compared to other seasons of the year.
- Publication
Cientifica, 2019, Vol 47, Issue 3, p256
- ISSN
0100-0039
- Publication type
Article
- DOI
10.15361/1984-5529.2019v47n3p256-268