Estimation of water retention capacity in soil: corrections to the CRA pedotransfer formula

  • J. M. Domingo Santos Universidad de Huelva
  • R. Fernández de Villarán San Juan Universidad de Huelva
  • E. Corral Pazos de Provens Universidad de Huelva
  • I. Rapp Arrarás Universidad de Huelva
Keywords: forest soils, site index, soil water, water capacity, available water capacity

Abstract

In Spain, a physical model to estimate the soil water capacity, which is called the CRA parameter, was implemented by Gandullo (1985). This parameter is broadly used in forest management and forest ecology research in relationship with site index and soil quality variables. While running a soil mapping project in the southwest of Spain some problems related to the CRA model were detected, mainly related to the influence of slope on total soil water capacity, as well as the estimation of available water capacity. A simple correction of the model is proposed in this paper, as well as a complementary parameter for available water capacity. The quality of those new parameters is tested by means of correlation analysis against Site Index variable.

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Published
2006-04-01
How to Cite
Domingo Santos, J. M., Fernández de Villarán San Juan, R., Corral Pazos de Provens, E., & Rapp Arrarás, I. (2006). Estimation of water retention capacity in soil: corrections to the CRA pedotransfer formula. Forest Systems, 15(1), 14-23. https://doi.org/10.5424/srf/2006151-00950
Section
Research Articles