Meunier Félicien, Couvreur Valentin, Draye Xavier, Lobet Guillaume, Huber Katrin, Schroeder Nathalie, Jorda Helena, Koch Axelle, Landl Magdalena, Schnepf Andrea, Vanderborght Jan, Vereecken Harry, Javaux Mathieu
Earth and Life Institute/Environmental Sciences, Université catholique de Louvain, Louvain, Belgium.
Agrosphere (IBG-3), Forschungszentrum Juelich GmbH, Jülich, Germany.
Methods Mol Biol. 2022;2395:259-283. doi: 10.1007/978-1-0716-1816-5_13.
In this chapter, we present the Root and Soil Water Movement and Solute transport model R-SWMS, which can be used to simulate flow and transport in the soil-plant system. The equations describing water flow in soil-root systems are presented and numerical solutions are provided. An application of R-SWMS is then briefly discussed, in which we combine in vivo and in silico experiments in order to decrypt water flow in the soil-root domain. More precisely, light transmission imaging experiments were conducted to generate data that can serve as input for the R-SWMS model. These data include the root system architecture, the soil hydraulic properties and the environmental conditions (initial soil water content and boundary conditions, BC). Root hydraulic properties were not acquired experimentally, but set to theoretical values found in the literature. In order to validate the results obtained by the model, the simulated and experimental water content distributions were compared. The model was then used to estimate variables that were not experimentally accessible, such as the actual root water uptake distribution and xylem water potential.
在本章中，我们介绍根系与土壤水分运动及溶质运移模型R-SWMS，该模型可用于模拟土壤-植物系统中的水流和溶质运移。文中给出了描述土壤-根系系统中水流的方程，并提供了数值解。随后简要讨论了R-SWMS的一个应用实例，在该实例中，我们将体内实验和计算机模拟实验相结合，以解析土壤-根系区域内的水流情况。更确切地说，进行了透光成像实验以生成可作为R-SWMS模型输入的数据。这些数据包括根系结构、土壤水力性质以及环境条件（初始土壤含水量和边界条件，BC）。根系水力性质并非通过实验获取，而是设定为文献中找到的理论值。为了验证模型所得结果，对模拟和实验得到的含水量分布进行了比较。然后该模型被用于估算一些无法通过实验获取的变量，如实际根系吸水分布和木质部水势。
