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| International Agrophysics |
| wydawca: | Instytut Agrofizyki
im. B. Dobrzańskiego
PAN
w Lublinie |
| ISSN: |
0236-8722 |
vol. 26, nr. 3 (2012)
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poprzedni artykuł wróć do listy artykułów następny artykuł
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Influence of temperature on soil water content measured by ECH2O-TE sensors
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| (pobierz wersję PDF )
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M. Kocárek, R. Kodešová
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Department of Soil and Soil Protection, Czech University of Life Sciences, Prague, Kamýcká 129, Prague 6 - Suchdol, 165 21, Czech Republic |
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vol. 26 (2012), nr. 3,
pp. 259-269
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streszczenie
The aim of this study was to investigate the
influence of temperature on water content value measured by
ECH2O-TE sensors. The influence of temperature on measured soil
water content values was clearly demonstrated. Soil water content
values measured during the day apparently oscillated with oscillating
soil temperatures. Average daily temperature and soil water content
were calculated for selected periods. Regression relationships
between deviations of soil temperature and soil water content from
their daily average values were evaluated. Correlation between the
soil water content and temperature deviations increase with the soil
depth due to the lower influence of rainfall and evaporation at the
soil surface on measured soil water content values in deeper soil
layers eg soil water content oscillation was controlled mostly by
oscillating temperature.The guideline values of linear regression
equations (R2>0.8) were very similar, close to value 0.002 and the
intercept values were equal to zero. The equation for recalculation
of measured soil water content values at given temperature to reference
soil water content for reference soil temperature, was propozed
on the basis of this analysis.
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słowa kluczowe
water content, temperature, sensor ECH2O-TE, sensor temperature dependence, correction equation
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