土壤-植物-大气连续体(SPAC)系统中植物根系吸水模型研究进展

Research on Plant-Root Water Uptake Models in Soil-Plant-Atmosphere Continuum

土壤植物系统是土壤-植物-大气连续体(SPAC)中的一个重要子系统。植物根系吸水过程是SPAC系统中水分运移规律研究的重要内容。从影响根系吸收土壤水分的影响因素入手,现有根系吸水模型可分为经验模型、半经验半理论模型和理论模型3类。文章综述了自20世纪60年代初第一个单根吸水模型以来的植物根系吸水模型及其最新研究进展,指出未来研究的重点是注重根系吸水机理同时,修改和完善已有根系吸水模型,简化模型参数,使之更易应用于实际。

The soil plant system is a very important subsystem of the soil plant atmosphere continuum (SPAC). Plant root water uptake is an important part of the research on water transforming patterns in SPAC. Concerning the impact of root water uptake from the soil, the current root water uptake models are discussed by three categories: theoretical, semi theoretical and semi empirical, empirical models. It is pointed out that the future research focus will be put on the mechanism research of root water uptake, the modification and improvement of the existing root water uptake models, the simplification of model parameters, and the application in practice.