SciELO - Scientific Electronic Library Online

vol.14 número2Wettability and surface roughness characteristics of medium density fiberboard panels from rhododendron (Rhododendron ponticum) biomassEfecto de la densidad de plantación inicial en el módulo de elasticidad dinámico de árboles en pie y trozas de una plantación de pino radiata de 28 años, en la zona de arenales, Chile índice de autoresíndice de assuntospesquisa de artigos
Home Pagelista alfabética de periódicos  

Serviços Personalizados




Links relacionados


Maderas. Ciencia y tecnología

versão On-line ISSN 0718-221X


HAKAM, Abdelillah et al. Effect of bark stripping on the electrical impedance of Quercus suber leaves. Maderas, Cienc. tecnol. [online]. 2012, vol.14, n.2, pp.195-208. ISSN 0718-221X.

This study examined the effect of bark stripping on the electrical impedance parameters of cork oak young leaves between 40Hz and 100 kHz. This was a new application of the electrical impedances spectroscopy (EIS) in plant science. Various stripping coefficients (CD) were applied on the trees. Bark stripping is expected to affect water metabolism of leaves and therefore changes in the EIS parameters are expected as well. Single-DCE (ZARC) model was used as equivalent circuit for leaves. Several electrophysiological parameters of this model were compared with moisture content (MC) of the leaves. Intracellular resistance (Ri), extracellular resistance (Re) and relaxation time (τ) of the leaves increased during 14 days after stripping while the distributed coefficient (Ψ) and MC decreased. Significant correlation between EIS parameters, MC and trees treatments were found.

Palavras-chave : Quercus suber; Electrical impedance; Equivalent circuit; Single DCE; Leaves; Bark-stripping; Bark-stripping coefficient.

        · texto em Inglês     · Inglês ( pdf )


Creative Commons License Todo o conteúdo deste periódico, exceto onde está identificado, está licenciado sob uma Licença Creative Commons