Main Article Content
Electrical potential differences have been continuously recorded since 1997 between electrodes inserted in sixteen selected sites of the trunk of a Turkey oak (Quercus cerris L.) and in the ground. The measured electric potential difference data have a characteristic sinusoidal daily variation. The annual fluctuation of the mean daily amplitudes of these diurnal variations has at least two maxima per year. We found a remarkable correlation between electric potential differences (EPD), the water potential of air and sap flux density data. It means that the EPD follows the variations of the sap flow intensity.
Download data is not yet available.
How to Cite
Koppán, A. (2002) “Measurement of electric potential difference on trees”, Acta Biologica Szegediensis, 46(3-4), pp. 37-38. Available at: http://abs.bibl.u-szeged.hu/index.php/abs/article/view/2232 (Accessed: 3December2020).