Water transport from soil through plant to atmosphere: a lumped-parameter model

✍ Scribed by C.W. Rose; G.F. Byrne; G.K. Hansen

• Publisher: Elsevier Science
• Year: 1976
• Weight: 696 KB
• Volume: 16
• Category: Article
• ISSN: 0002-1571
• DOI: 10.1016/0002-1571(76)90040-6

✦ Synopsis

Rose, C. W., Byrne, G. F. and Hansen, G. K., 1976. Water transport from soil through plant to atmosphere: a lumped-parameter model. Agric. Meteorol., 16: 171--184.

A lumped-parameter model has been developed which allows the simulation of water transport from soil to atmosphere through a single plant or a crop. This model accepts the fact that there is current uncertainty as to whether the dominant liquid-phase resistance to water lies in the soil or the plant, and no assumptions are made on this question. The model is based on the Ohm's law analogue and on two experimentally derived functions. The model structure is thought to be generally applicable although these two empirical relationships are derived from an experiment with cotton plants in pots.

The model may be suitable for the simulation of transpiration on a daily basis in a variety of soil and atmospheric environments, and also within-daily changes in transpiration and water potentials. One such simulation is compared with those of other models, and with other experiments.