Abstract

CHACON-DE LA CRUZ, José E.  and  POMPA-GARCIA, Marín. Response of tree radial growth to evaporation, as indicated by earlywood and latewood. Rev. Chapingo ser. cienc. for. ambient [online]. 2015, vol.21, n.1, pp.57-65. ISSN 2007-4018.  https://doi.org/10.5154/r.rchscfa.2014.10.050.

Most dendrochronological studies are based on the relationship between total radial growth and precipitation; however, very few studies have considered the responses of early (EW) and late (LW) wood growth or the role of evaporation. In this study, residual indices for forests in the state of Durango (Mexico) during the period 1964-2010 were used to evaluate the response of EW and LW growth in Pinus cooperi Blanco to evaporation. DENDROCLIM software was used to correlate dendrochronological data to total monthly evaporation. Evaporation from January of the previous year to December of the current year was considered in a simple interval analysis. The coefficients of correlation indicated a consistent negative relationship between both EW and LW growth and evaporation in the fall/winter prior to the growth season. Nevertheless, LW growth was more consistent in terms of climatic sensitivity, which may indicate that measurement of this parameter may be more useful in dendroclimatic studies.

Keywords : Dendrochronology; correlation; sensitivity; hydric stress.

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