Propriedades hidráulicas do solo para as diferentes classes texturais

• Author(s): Ramos, Tiago ; Gonçalves, Maria da Conceição ; Martins, José Casimiro ; Pires, Fernando ; Pereira, L.S.
• Date: 2011
• Persistent ID: http://hdl.handle.net/10400.5/5007
• Origin: Repositório da UTL
• Subject(s): hydraulic conductivity; PROPSOLO; soil water retention
• Document Type: Article
• Language: Portuguese

Description

Soil texture influences significantly soil hydraulic properties, which due to soil he-terogeneity normally present large spatial variability. The variability of soil reten-tion θ(h), and hydraulic conductivity K(h) curves, in 11 of the 12 texture classes of the diagram of Gomes e Silva (1962) was studied. For each textural class, average, maximum, minimum, and the standard deviation values for the Mualem van Ge-nuchten parameters are presented based on 558 θ(h) and 245 K(h) curves deter-mined in undisturbed soil samples which are included in the PROPSOLO database of Estação Agronómica Nacional. An av-erage function describing θ(h) and K(h) in each textural class is also presented